Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Toughness<.>)

Общее количество найденных документов : 2
Показаны документы с 1 по 2

Microstructure of intercritical heat affected zone and toughness of microalloyed steel laser welds / L. S. Derevyagina [et al.] // Mater. Sci. Eng. A. - 2020. - Vol. 770. - Ст. 138522, DOI 10.1016/j.msea.2019.138522. - Cited References: 28 . - ISSN 0921-5093
Кл.слова (ненормированные):
Low-carbon steel -- Laser welding -- Heat affected zone -- Structure -- Toughness
Аннотация: Microstructure of laser welds of the X70 low-carbon pipe steel was studied. High cooling rates after laser welding and non-uniform distribution of carbon in the ferrite-pearlite base metal caused formation of regions with increased microhardness (up to 650 НV) in inter-critical heat affected zone (ICHAZ). These regions consisted of finely dispersed degenerate upper bainite and martensite-austenite constituents of a slender shape and small fraction of a massive shape along the boundaries of bainite laths, as well as twinned martensite. High concentration of martensite-austenite constituents (10–16%) and residual stresses in ICHAZ, as well as a dendritic martensitic structure with carbide interlayers along the boundaries of martensite laths in fusion zone were the main reasons of sharp decrease in charpy impact energy of the welded samples. High microhardness of the laser welds was decreased down to 320 HV and their brittleness was improved by annealing. Also, in ICHAZ, degenerate upper bainite and the regions of martensite-austenite constituents decayed forming tempered sorbite and Fe2C and Fe3C carbides, respectively. Charpy impact energy of the welds doubled after annealing compared to the welds without annealing, and ductile-brittle transition temperature decreased down to –60°С.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences, 2/4, pr. Akademicheskii, Tomsk, 634055, Russian Federation
Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences, 4/1, Institutskaya str., Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Derevyagina, L. S.; Gordienko, A. I.; Orishich, A. G.; Malikov, N. S.; Surikova, M. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
Найти похожие

Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel / L. S. Derevyagina, A. I. Gordienko, N. S. Surikova, M. N. Volochaev // Mater. Sci. Eng. A. - 2021. - Vol. 816. - Ст. 141275, DOI 10.1016/j.msea.2021.141275. - Cited References: 43 . - ISSN 0921-5093
Кл.слова (ненормированные):
Low-carbon microalloyed steel -- Helical rolling -- Microstructure -- Bainite -- Martensite–austenite constituent -- Impact toughness
Аннотация: 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.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Institute of Strength Physics and Materials Science of Siberian Branch Russian Academy of Sciences, 2/4, Pr. Akademicheskii, Tomsk, 634055, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), Akademgorodok 50, Bld. 38, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, 31, Pr. Krasnoyarsk Worker, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Derevyagina, L. S.; Gordienko, A. I.; Surikova, N. S.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
Найти похожие