Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel; Materials Science and Engineering: A; Vol. 816

Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel; Materials Science and Engineering: A; Vol. 816

書誌詳細
Parent link:	Materials Science and Engineering: A Vol. 816.— 2021.— [141275, 11 p.]
団体著者:	Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
その他の著者:	Derevyagina L. S. Lyudmila Sergeevna, Gordienko A. I. Antonina Ildarovna, Surikova N. S. Natalya, Volochaev M. N. Mikhail
要約:	Title screen Ferrite-bainite microstructures and impact toughness of the X65 low-carbon microalloyed steel were investigated after helical rolling at 1000, 920, 850, and 810 °C followed by continuous cooling in air. After helical rolling at 1000 °C, granular bainite with large areas of the massive-shape martensite-austenite constituent (d = 1.5 μm) and a high fraction of twinned martensite (d > 2.0 μm) were observed in the steel. This caused a decrease in impact energy at low test temperatures (for example, 70 J at -70°С). Lowering the helical rolling temperature contributed to a reduction of dimensions of both ferrite-bainite and martensite-austenite constituent areas, as well as the replacement of the latter by a slender type one and an improvement in fracture toughness at the low temperatures. The highest impact energy level (210 J at -70 °C) was achieved after helical rolling at 850 °C due to the formation of a homogeneous microstructure, which included dispersed ferrite grains, granular bainite and small fractions of the slender type martensite-austenite constituent (d = 0.1-0.7 μm). In this case, areas of twinned martensite were absent. Режим доступа: по договору с организацией-держателем ресурса
言語:	英語
出版事項:	2021
主題:	электронный ресурс труды учёных ТПУ low-carbon microalloyed steel helical rolling microstructure bainite martensite-austenite constituent impact toughness низкоуглеродистые стали микролегированные стали винтовая прокатка микроструктуры ударная вязкость
オンライン･アクセス:	https://doi.org/10.1016/j.msea.2021.141275
フォーマット:	電子媒体図書の章
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664837

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