title: ÐÑÑÐ²Ð»ÐµÐ½Ð¸Ðµ ÑÑÑÑÐºÑÑÑÑ Ð¿ÐµÑÐ²Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð°ÑÑÑÐµÐ½Ð¸ÑÐ½Ð¾Ð³Ð¾ Ð·ÐµÑÐ½Ð° Ð² Ð¼Ð°ÑÑÐµÐ½ÑÐ¸ÑÐ½ÑÑ Ð¸ Ð±ÐµÐ¹Ð½Ð¸ÑÐ½ÑÑ ÑÑÐ°Ð»ÑÑ
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: Revealing of the structure of the prior austenitic grain in martensitic and bainitic steels
Creators: name: ÐÐ°Ð½Ð¸Ð»Ð¾Ð²Ð°, ÐÐ°ÑÐ¸Ñ
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: 2024
Subjects: Ð¡ÑÐ°Ð»Ñ Ð°ÑÑÑÐµÐ½Ð¸ÑÐ½Ð°Ñ
ÐÐµÑÐ°Ð»Ð»Ð¾Ð³ÑÐ°ÑÐ¸Ñ
Ð±ÑÐ²ÑÐµÐµ Ð°ÑÑÑÐµÐ½Ð¸ÑÐ½Ð¾Ðµ Ð·ÐµÑÐ½Ð¾
Ñ Ð¸Ð¼Ð¸ÑÐµÑÐºÐ¾Ðµ ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ
Ð±ÐµÐ¹Ð½Ð¸ÑÐ½Ð¾-Ð¼Ð°ÑÑÐµÐ½ÑÐ¸ÑÐ½ÑÐµ ÑÑÐ°Ð»Ð¸
ÑÐµÐ°ÐºÑÐ¸Ð² ÐÐ°ÑÑÐ°Ð»Ð»Ð°
prior austenitic grain
chemical etching
bainite-martensitic steels
Marshalls reagent

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description: The given work is devoted to studying microstructure of prior austenitic grains in bainite-martensitic steels and elaborating methodology for their identification. The research set the following goals: 1. Selection of chemical reagents that will be included in the etching solution to identify the boundaries of the prior austenitic grain; 2. Selection of the ratio of reagents of the etching solution, providing optimal results; 3. Determination of the size of the prior austenitic grain in the selected section of the steel sample with precise positioning for mutual verification of the adequacy of chemical etching and EBSD-method; 4. Comparative evaluation of austenitic microstructure research techniques by various methods The work was carried out on the base of the CRISM âPrometeyâ, where the preparation of sample grinds, chemical etching, and studies of the microstructure of samples using optical metallography and EBSD-method were carried out. The method for revealing the boundaries of prior austenite grains using the precise positioning method was verified, and the sizes of primary austenite grains in a selected area of the 09CrNi4MoCuV steel sample were determined. As a result, a method for detecting the boundaries of prior austenitic grains by chemical etching in a solution of the proposed composition was created and verified, and a comparative assessment of the possibilities of studying the former austenitic microstructure of martensitic and bainitic steels by optical metallography and EBSD-method was carried out.