title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ°Ð»Ð¸ HR550LA Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð ÐÐ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Develop the technology for modifying HR550LA steel using REM
Creators: name: Ð¯Ð½ Ð¨ÑÑÐ·Ðµ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð¡ÑÐ°Ð»Ñ
ÑÑÐ»Ð¾Ð²Ð¸Ñ Ð·Ð°ÑÐ²ÐµÑÐ´ÐµÐ²Ð°Ð½Ð¸Ñ
Ð»Ð¸ÑÐ°Ñ ÑÑÑÑÐºÑÑÑÐ°
Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
conditions of approval
cast structure
modification

description: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ°Ð»Ð¸ ÑÐµÐ´ÐºÐ¾Ð·ÐµÐ¼ÐµÐ»ÑÐ½ÑÐ¼Ð¸ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ°Ð¼Ð¸ Ð½Ð° ÑÑÑÑÐºÑÑÑÑ. ÐÐ°Ð´Ð°ÑÐ¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ: 1) ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ð¸ Ð ÐÐ Ð½Ð° Ð¼Ð°ÐºÑÐ¾- Ð¸ Ð¼Ð¸ÐºÑÐ¾ÑÑÑÑÐºÑÑÑÑ ÑÐ»Ð¸ÑÐºÐ¾Ð² Ð¿ÑÐ¸ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÑ Ð¾ÑÐ»Ð°Ð¶Ð´ÐµÐ½Ð¸Ñ. 2) ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÑ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ ÑÑÐ»Ð¾Ð²Ð¸Ð¹ Ð·Ð°ÑÐ²ÐµÑÐ´ÐµÐ²Ð°Ð½Ð¸Ñ Ð½Ð° ÑÑÑÑÐºÑÑÑÑ Ð½Ðµ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð¸ Ð¼Ð¾Ð´Ð¸ÑÐ¸ÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð ÐÐ ÑÑÐ°Ð»ÐµÐ¹. 3) ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°ÑÑ Ð½ÐµÐ¼ÐµÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ðµ Ð²ÐºÐ»ÑÑÐµÐ½Ð¸Ñ Ð² Ð¾Ð¿ÑÑÐ½ÑÑ Ð¿Ð»Ð°Ð²ÐºÐ°Ñ. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð±ÑÐ»Ð¾ ÑÑÑÐ°Ð½Ð¾Ð²Ð»ÐµÐ½Ð¾, ÑÑÐ¾ Ð¿Ð¾ Ð¼ÐµÑÐµ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ñ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐµÐ´ÐºÐ¾Ð·ÐµÐ¼ÐµÐ»ÑÐ½ÑÑ ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ¾Ð², Ð´Ð¾Ð±Ð°Ð²Ð»ÐµÐ½Ð½ÑÑ Ð² ÑÑÐ°Ð»Ñ, ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ²Ð¾ Ð½ÐµÐ¼ÐµÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¸Ñ Ð²ÐºÐ»ÑÑÐµÐ½Ð¸Ð¹ Ð² ÑÑÑÑÐºÑÑÑÐµ ÑÐ²ÐµÐ»Ð¸ÑÐ¸Ð²Ð°ÐµÑÑÑ. Ð¡Ð¾ÑÑÐ°Ð² Ð²ÐºÐ»ÑÑÐµÐ½Ð¸Ð¹ Ð¼ÐµÐ½ÑÐµÑÑÑ Ð¾Ñ Ð¾ÐºÑÐ¸Ð´Ð° Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸Ñ Ðº ÑÑÐ»ÑÑÐ¸Ð´Ð°Ð¼ ÑÐµÑÐ¸Ñ Ð¸ Ð»Ð°Ð½ÑÐ°Ð½Ð°. ÐÑÐ¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ð¸ ÑÑÐ¼Ð¼Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐµÑÐ¸Ñ Ð¸ Ð»Ð°Ð½ÑÐ°Ð½Ð° Ð´Ð¾ 0,7% Ð½Ð°Ð±Ð»ÑÐ´Ð°Ð»Ð¸ Ð¿Ð¾ÑÐ²Ð»ÐµÐ½Ð¸Ðµ ÐºÑÑÐ¿Ð½ÑÑ ÑÐºÐ¾Ð¿Ð»ÐµÐ½Ð¸Ð¹ Ð²ÐºÐ»ÑÑÐµÐ½Ð¸Ð¹ Ð ÐÐ Ð² ÑÐµÐ½ÑÑÐµ ÑÐ»Ð¸ÑÐºÐ°. ÐÐ¾Ð±Ð°Ð²ÐºÐ° 0,07 â 0,1% ÑÐµÑÐ¸Ñ Ðº ÑÑÐ°Ð»Ð¸ Ð¿ÑÐ¸Ð²Ð¾Ð´Ð¸Ð»Ð¾ Ðº ÑÐ¼ÐµÐ½ÑÑÐµÐ½Ð¸Ñ ÑÐ°Ð·Ð¼ÐµÑÐ° Ð»Ð¸ÑÐ¾Ð³Ð¾ Ð·ÐµÑÐ½Ð° Ð¿ÑÐ¸Ð¼ÐµÑÐ½Ð¾ Ð½Ð° 25% Ð² ÑÐ»Ð¸ÑÐºÐ°Ñ, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ ÐºÐ°Ðº Ð¿ÑÐ¸ Ð»Ð¸ÑÑÐµ Ð² Ð¿ÐµÑÑÐ°Ð½ÑÐµ ÑÐ¾ÑÐ¼Ñ, ÑÐ°Ðº Ð¸ Ð² ÑÑÐ³ÑÐ½Ð½ÑÐµ. ÐÑÐ¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ð¸ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ ÑÐµÑÐ¸Ñ Ð¸ Ð»Ð°Ð½ÑÐ°Ð½Ð° Ð² ÑÐ»Ð¸ÑÐºÐ°Ñ Ð½Ð°Ð±Ð»ÑÐ´Ð°Ð»Ð¸ Ð±Ð¾Ð»ÐµÐµ ÑÐµÐ¼ ÑÑÑÑÐºÑÐ°ÑÐ½Ð¾Ðµ ÑÐ½Ð¸Ð¶ÐµÐ½Ð¸Ðµ Ð¾Ð±ÑÑÐ¼Ð½Ð¾Ð¹ Ð´Ð¾Ð»Ð¸ Ð¸Ð·Ð±ÑÑÐ¾ÑÐ½Ð¾Ð³Ð¾ ÑÐµÑÑÐ¸ÑÐ° Ð² ÑÑÑÑÐºÑÑÑÐµ.
description: Mainly research the modification of the steel by the rare earth elements. Research tasks: 1) Investigate the effect of the concentration of rare earth metals on the macro- and microstructure of ingots under constant cooling conditions. 2) Investigate the effect of solidification conditions at the same content of rare-earth metals in steel. 3) Investigate non-metallic inclusions in experimental heats. As a result of the study, it was found that as the content of rare earth elements added to steel increases, the amount of non-metallic inclusions in the structure increases. The composition of inclusions varies from alumina to cerium and lanthanum sulfides. With an increase in the total content of cerium and lanthanum to 0.7%, the appearance of large accumulations of REM inclusions in the center of the ingot was observed. The addition of 0.07 - 0.1% cerium to steel led to a decrease in the size of the cast grain by about 25% in ingots obtained both by casting into sand molds and into cast iron. With an increase in the content of cerium and lanthanum in the ingots, a more than threefold decrease in the volume fraction of excess ferrite in the structure was observed.