derek-thomas/squad-v1.1-t5-question-generation huggingface dataset:
At a certain temperature, (usually between 1,500 °F (820 °C) and 1,600 °F (870 °C), depending on carbon content), the base metal of steel undergoes a change in the arrangement of the atoms in its crystal matrix, called allotropy. This allows the small carbon atoms to enter the interstices of the iron crystal, diffusing into the iron matrix. When this happens, the carbon atoms are said to be in solution, or mixed with the iron, forming a single, homogeneous, crystalline phase called austenite. If the steel is cooled slowly, the iron will gradually change into its low temperature allotrope. When this happens the carbon atoms will no longer be soluble with the iron, and will be forced to precipitate out of solution, nucleating into the spaces between the crystals. The steel then becomes heterogeneous, being formed of two phases; the carbon (carbide) phase cementite, and ferrite. This type of heat treatment produces steel that is rather soft and bendable. However, if the steel is cooled quickly the carbon atoms will not have time to precipitate. When rapidly cooled, a diffusionless (martensite) transformation occurs, in which the carbon atoms become trapped in solution. This causes the iron crystals to deform intrinsically when the crystal structure tries to change to its low temperature state, making it very hard and brittle.

Question: Allotrophy happens between what temperatures? Question: Soft and bendable steel is caused by what? Question: What is the name of steel when it is being formed of two phases? Question: What are the two phases when steel becomes heterogenous? Question: What are the characteristics of steel if it is cooled to quickly?
Conversely, most heat-treatable alloys are precipitation hardening alloys, which produce the opposite effects that steel does. When heated to form a solution and then cooled quickly, these alloys become much softer than normal, during the diffusionless transformation, and then harden as they age. The solutes in these alloys will precipitate over time, forming intermetallic phases, which are difficult to discern from the base metal. Unlike steel, in which the solid solution separates to form different crystal phases, precipitation hardening alloys separate to form different phases within the same crystal. These intermetallic alloys appear homogeneous in crystal structure, but tend to behave heterogeneous, becoming hard and somewhat brittle.

Question: Precipitation hardening alloys are sometimes also? Question: Precipitation hardening alloys produce the opposite effects of? Question: What makes alloys more softer than normal?
When a molten metal is mixed with another substance, there are two mechanisms that can cause an alloy to form, called atom exchange and the interstitial mechanism. The relative size of each element in the mix plays a primary role in determining which mechanism will occur. When the atoms are relatively similar in size, the atom exchange method usually happens, where some of the atoms composing the metallic crystals are substituted with atoms of the other constituent. This is called a substitutional alloy. Examples of substitutional alloys include bronze and brass, in which some of the copper atoms are substituted with either tin or zinc atoms. With the interstitial mechanism, one atom is usually much smaller than the other, so cannot successfully replace an atom in the crystals of the base metal. The smaller atoms become trapped in the spaces between the atoms in the crystal matrix, called the interstices. This is referred to as an interstitial alloy. Steel is an example of an interstitial alloy, because the very small carbon atoms fit into interstices of the iron matrix. Stainless steel is an example of a combination of interstitial and substitutional alloys, because the carbon atoms fit into the interstices, but some of the iron atoms are replaced with nickel and chromium atoms.

Question: Bronze and brass are examples of what? Question: Tin or zinc atoms in place of copper atoms create? Question: What is the name of one interstitial alloy? Question: Stainless steel is an example of what two alloys?
The use of alloys by humans started with the use of meteoric iron, a naturally occurring alloy of nickel and iron. It is the main constituent of iron meteorites which occasionally fall down on Earth from outer space. As no metallurgic processes were used to separate iron from nickel, the alloy was used as it was. Meteoric iron could be forged from a red heat to make objects such as tools, weapons, and nails. In many cultures it was shaped by cold hammering into knives and arrowheads. They were often used as anvils. Meteoric iron was very rare and valuable, and difficult for ancient people to work.

Question: What was one of the first alloys used by humans? Question: What is meteoric iron composed of? Question: Where does meteoric iron come from? Question: How does meteoric iron come to earth? Question: What can forged meteoric iron make?
Iron is usually found as iron ore on Earth, except for one deposit of native iron in Greenland, which was used by the Inuit people. Native copper, however, was found worldwide, along with silver, gold and platinum, which were also used to make tools, jewelry, and other objects since Neolithic times. Copper was the hardest of these metals, and the most widely distributed. It became one of the most important metals to the ancients. Eventually, humans learned to smelt metals such as copper and tin from ore, and, around 2500 BC, began alloying the two metals to form bronze, which is much harder than its ingredients. Tin was rare, however, being found mostly in Great Britain. In the Middle East, people began alloying copper with zinc to form brass. Ancient civilizations took into account the mixture and the various properties it produced, such as hardness, toughness and melting point, under various conditions of temperature and work hardening, developing much of the information contained in modern alloy phase diagrams. Arrowheads from the Chinese Qin dynasty (around 200 BC) were often constructed with a hard bronze-head, but a softer bronze-tang, combining the alloys to prevent both dulling and breaking during use.

Question: Where is the only iron deposit on earth? Question: Which metal important to the ancients is the hardest one? Question: Around what time did bronze start being formed? Question: Where is tin mostly found? Question: What does copper and zinc form to make?
Mercury has been smelted from cinnabar for thousands of years. Mercury dissolves many metals, such as gold, silver, and tin, to form amalgams (an alloy in a soft paste, or liquid form at ambient temperature). Amalgams have been used since 200 BC in China for plating objects with precious metals, called gilding, such as armor and mirrors. The ancient Romans often used mercury-tin amalgams for gilding their armor. The amalgam was applied as a paste and then heated until the mercury vaporized, leaving the gold, silver, or tin behind. Mercury was often used in mining, to extract precious metals like gold and silver from their ores.

Question: What does mercury make most metals do? Question: Since when have Amalgams been used? Question: What did ancient Romans use to gild their armor? Question: Gold and silver were extracted from their ores by using?
Many ancient civilizations alloyed metals for purely aesthetic purposes. In ancient Egypt and Mycenae, gold was often alloyed with copper to produce red-gold, or iron to produce a bright burgundy-gold. Gold was often found alloyed with silver or other metals to produce various types of colored gold. These metals were also used to strengthen each other, for more practical purposes. Copper was often added to silver to make sterling silver, increasing its strength for use in dishes, silverware, and other practical items. Quite often, precious metals were alloyed with less valuable substances as a means to deceive buyers. Around 250 BC, Archimedes was commissioned by the king to find a way to check the purity of the gold in a crown, leading to the famous bath-house shouting of "Eureka!" upon the discovery of Archimedes' principle.

Question: Ancient civilizations often alloyed metals for what reason? Question: Red gold is made by combining gold with? Question: Buyers were often deceived when precious metals were mixed with? Question: Around what time was the Archimedes' principle discovered? Question: Who shouted "Eureka!" while checking the purity of a crown?
The term pewter covers a variety of alloys consisting primarily of tin. As a pure metal, tin was much too soft to be used for any practical purpose. However, in the Bronze age, tin was a rare metal and, in many parts of Europe and the Mediterranean, was often valued higher than gold. To make jewelry, forks and spoons, or other objects from tin, it was usually alloyed with other metals to increase its strength and hardness. These metals were typically lead, antimony, bismuth or copper. These solutes sometimes were added individually in varying amounts, or added together, making a wide variety of things, ranging from practical items, like dishes, surgical tools, candlesticks or funnels, to decorative items such as ear rings and hair clips.

Question: Pewter is mostly made up of? Question: Why was tin was rarely used for everyday use? Question: During the bronze age, which metal was valued higher than gold in Europe and the Mediterranean? Question: What was done to tin to make it stronger? Question: What metals were alloyed with tin to make it stronger?
The first known smelting of iron began in Anatolia, around 1800 BC. Called the bloomery process, it produced very soft but ductile wrought iron. By 800 BC, iron-making technology had spread to Europe, arriving in Japan around 700 AD. Pig iron, a very hard but brittle alloy of iron and carbon, was being produced in China as early as 1200 BC, but did not arrive in Europe until the Middle Ages. Pig iron has a lower melting point than iron, and was used for making cast-iron. However, these metals found little practical use until the introduction of crucible steel around 300 BC. These steels were of poor quality, and the introduction of pattern welding, around the 1st century AD, sought to balance the extreme properties of the alloys by laminating them, to create a tougher metal. Around 700 AD, the Japanese began folding bloomery-steel and cast-iron in alternating layers to increase the strength of their swords, using clay fluxes to remove slag and impurities. This method of Japanese swordsmithing produced one of the purest steel-alloys of the early Middle Ages.

Question: Where did smelting of iron begin? Question: When did the smelting of iron first begin? Question: When did iron making technology begin in Japan? Question: Pig iron is composed of iron and what else? Question: What makes Pig iron different from regular iron?
While the use of iron started to become more widespread around 1200 BC, mainly because of interruptions in the trade routes for tin, the metal is much softer than bronze. However, very small amounts of steel, (an alloy of iron and around 1% carbon), was always a byproduct of the bloomery process. The ability to modify the hardness of steel by heat treatment had been known since 1100 BC, and the rare material was valued for the manufacture of tools and weapons. Because the ancients could not produce temperatures high enough to melt iron fully, the production of steel in decent quantities did not occur until the introduction of blister steel during the Middle Ages. This method introduced carbon by heating wrought iron in charcoal for long periods of time, but the penetration of carbon was not very deep, so the alloy was not homogeneous. In 1740, Benjamin Huntsman began melting blister steel in a crucible to even out the carbon content, creating the first process for the mass production of tool steel. Huntsman's process was used for manufacturing tool steel until the early 1900s.

Question: Heat treatment of steel has been know since what time? Question: When did iron start to become melted by people? Question: When did Benjamin Huntsman begin to melt blister steel in a crucible Question: Who created the first process for the mass production of tool steel?
With the introduction of the blast furnace to Europe in the Middle Ages, pig iron was able to be produced in much higher volumes than wrought iron. Because pig iron could be melted, people began to develop processes of reducing the carbon in the liquid pig iron to create steel. Puddling was introduced during the 1700s, where molten pig iron was stirred while exposed to the air, to remove the carbon by oxidation. In 1858, Sir Henry Bessemer developed a process of steel-making by blowing hot air through liquid pig iron to reduce the carbon content. The Bessemer process was able to produce the first large scale manufacture of steel. Once the Bessemer process began to gain widespread use, other alloys of steel began to follow. Mangalloy, an alloy of steel and manganese exhibiting extreme hardness and toughness, was one of the first alloy steels, and was created by Robert Hadfield in 1882.

Question: What did the blast furnace help do to pig iron in the middle ages? Question: By reducing carbon in liquid pig iron, what was created? Question: When did puddling start occurring? Question: When was the Bessemer process developed? Question: Steel and manganese combines form to make what?
In 1906, precipitation hardening alloys were discovered by Alfred Wilm. Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that soften when quenched (cooled quickly), and then harden over time. After quenching a ternary alloy of aluminium, copper, and magnesium, Wilm discovered that the alloy increased in hardness when left to age at room temperature. Although an explanation for the phenomenon was not provided until 1919, duralumin was one of the first "age hardening" alloys to be used, and was soon followed by many others. Because they often exhibit a combination of high strength and low weight, these alloys became widely used in many forms of industry, including the construction of modern aircraft.

Question: When were precipitation hardening alloys discovered? Question: Who discovered precipitation hardening alloys? Question: What happens to precipitation hardening alloys after they quenched? Question: One of the first "age hardening" alloys used were called? Question: What was used in the construction of modern aircraft?
Norfolk Island (i/ˈnɔːrfək ˈaɪlənd/; Norfuk: Norf'k Ailen) is a small island in the Pacific Ocean located between Australia, New Zealand and New Caledonia, 1,412 kilometres (877 mi) directly east of mainland Australia's Evans Head, and about 900 kilometres (560 mi) from Lord Howe Island. The island is part of the Commonwealth of Australia. Together with two neighbouring islands, it forms one of Australia's external territories. It has 1,796 inhabitants living on a total area of about 35 km2 (14 sq mi). Its capital is Kingston.

Question: In what ocean is Norfolk Island found? Question: How far away is Evans Head from Norfolk Island? Question: How far away is the nearest land mass to Norfolk Island? Question: How many people live on Norfolk Island? Question: What is the capital city of Norfolk Island?
Norfolk Island was colonised by East Polynesians but was long unpeopled when it was settled by Great Britain as part of its settlement of Australia from 1788. The island served as a convict penal settlement from 6 March 1788 until 5 May 1855, except for an 11-year hiatus between 15 February 1814 and 6 June 1825, when it lay abandoned. On 8 June 1856, permanent civilian residence on the island began when it was settled from Pitcairn Island. In 1913, the UK handed Norfolk over to Australia to administer as an external territory.

Question: Who was Norfolk Island colonised by? Question: What purpose did Norfolk Island serve for the majority of the time from 1788 until 1855? Question: What date did civilians begin to permanently reside in Norfolk Island? Question: Where did the first permanent civilians of Norfolk Island settle from in 1856? Question: In what year did the UK hand Norfolk Island over to Australia to administrate?
Sir John Call argued the advantages of Norfolk Island in that it was uninhabited and that New Zealand flax grew there. In 1786 the British government included Norfolk Island as an auxiliary settlement, as proposed by John Call, in its plan for colonisation of New South Wales. The decision to settle Norfolk Island was taken due to Empress Catherine II of Russia's decision to restrict sales of hemp. Practically all the hemp and flax required by the Royal Navy for cordage and sailcloth was imported from Russia.

Question: In what year did the British government include Norfolk Island as a auxiliary settlement? Question: Who proposed the idea to include Norfolk Island as a British auxiliary settlement in 1786? Question: In including Norfolk Island as an auxiliary settlement, what Australian state did the British government plan to colonise? Question: What woman influenced the decision by the British to settle Norfolk Island? Question: Where was the majority of the hemp and flax used by the Royal Navy imported from?
As early as 1794, Lieutenant-Governor of New South Wales Francis Grose suggested its closure as a penal settlement, as it was too remote and difficult for shipping and too costly to maintain. The first group of people left in February 1805, and by 1808 only about 200 remained, forming a small settlement until the remnants were removed in 1813. A small party remained to slaughter stock and destroy all buildings, so that there would be no inducement for anyone, especially from other European powers, to visit and lay claim to the place. From 15 February 1814 to 6 June 1825 the island was abandoned.

Question: When did Lieutenant-Governor of New South Wales Francis Grose start suggesting Norfolk Island be closed as a penal settlement? Question: Why did Francis Grose think that Norfolk Island should be closed as a penal settlement? Question: When did the first group of people leave Norfolk Island? Question: By 1808, how many people remained on Norfolk Island? Question: Why did a small group of people remain on Norfolk Island, after others had already left?
In 1824 the British government instructed the Governor of New South Wales Thomas Brisbane to occupy Norfolk Island as a place to send "the worst description of convicts". Its remoteness, previously seen as a disadvantage, was now viewed as an asset for the detention of recalcitrant male prisoners. The convicts detained have long been assumed to be a hardcore of recidivists, or 'doubly-convicted capital respites' – that is, men transported to Australia who committed fresh colonial crimes for which they were sentenced to death, and were spared the gallows on condition of life at Norfolk Island. However, a recent study has demonstrated, utilising a database of 6,458 Norfolk Island convicts, that the reality was somewhat different: more than half were detained at Norfolk Island without ever receiving a colonial conviction, and only 15% had been reprieved from a death sentence. Furthermore, the overwhelming majority of convicts sent to Norfolk Island had committed non-violent property sentences, and the average length of detention was three years.

Question: Who instructed the Governor of New South Wales Thomas Brisbane to send the worst convicts to Norfolk Island? Question: What previous disadvantage of Norfolk Island was seen as an advantage for holding male convicts? Question: What were the prisoners on Norfolk Island spared from on the the mainland? Question: How many convicts are listed in the database at Norfolk Island? Question: What was the average length of a prisoner's detention at Norfolk Island?
On 8 June 1856, the next settlement began on Norfolk Island. These were the descendants of Tahitians and the HMS Bounty mutineers, including those of Fletcher Christian. They resettled from the Pitcairn Islands, which had become too small for their growing population. On 3 May 1856, 193 persons left Pitcairn Islands aboard the "Morayshire". On 8 June 194 persons arrived, a baby having been born in transit. The Pitcairners occupied many of the buildings remaining from the penal settlements, and gradually established traditional farming and whaling industries on the island. Although some families decided to return to Pitcairn in 1858 and 1863, the island's population continued to grow. They accepted additional settlers, who often arrived with whaling fleets.

Question: Who were the next settlement of people on Norfolk Island descended from? Question: Where did the next settlement of people on Norfolk Island settle from? Question: On May 3, 1856, how many Pitcairners left for Norfolk Island? Question: What was the name of the ship the Pitcairners traveled on to Norfolk Island? Question: What trades did the Pitcairners establish while on Norfolk Island?
After the creation of the Commonwealth of Australia in 1901, Norfolk Island was placed under the authority of the new Commonwealth government to be administered as an external territory. During World War II, the island became a key airbase and refuelling depot between Australia and New Zealand, and New Zealand and the Solomon Islands. The airstrip was constructed by Australian, New Zealand and United States servicemen during 1942. Since Norfolk Island fell within New Zealand's area of responsibility it was garrisoned by a New Zealand Army unit known as N Force at a large Army camp which had the capacity to house a 1,500 strong force. N Force relieved a company of the Second Australian Imperial Force. The island proved too remote to come under attack during the war and N Force left the island in February 1944.

Question: When was the Commonwealth of Australia created? Question: During what major event did Norfolk Island become an important airbase and refuelling station? Question: Who contructed the airbase used on Norfolk Island during World War II? Question: Norfolk Island fell under whose responsibility during World War II? Question: When did N Force leave Norfolk Island during the time of World War II?
Financial problems and a reduction in tourism led to Norfolk Island's administration appealing to the Australian federal government for assistance in 2010. In return, the islanders were to pay income tax for the first time but would be eligible for greater welfare benefits. However, by May 2013 agreement had not been reached and islanders were having to leave to find work and welfare. An agreement was finally signed in Canberra on 12 March 2015 to replace self-government with a local council but against the wishes of the Norfolk Island government. A majority of Norfolk Islanders have objected to the Australian plan to make changes to Norfolk Island without first consulting them and allowing their say with 68% of voters against forced changes.

Question: What lead to Norfolk Island asking for assistance from Australia in 2010? Question: What benefit were residents of Norfolk Island told they would receive as a result of Australia's assistance? Question: What actually ended up happening after Norfolk Island asked Australia for help? Question: An agreement was finally signed in Canberra on March 12, 2015, to do what for Norfolk Island? Question: What percentage of Norfolk Island voters were against the changes brought by Australia?