Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel; Materials Science and Engineering: A; Vol. 816
| Parent link: | Materials Science and Engineering: A Vol. 816.— 2021.— [141275, 11 p.] |
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| Corporate Author: | |
| Other Authors: | , , , |
| Summary: | 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 |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.msea.2021.141275 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664837 |
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| 200 | 1 | |a Effect of helical rolling on the bainitic microstructure and impact toughness of the low-carbon microalloyed steel |f L. S. Derevyagina, A. I. Gordienko, N. S. Surikova, M. N. Volochaev | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 43 tit.] | ||
| 330 | |a 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. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Materials Science and Engineering: A | ||
| 463 | |t Vol. 816 |v [141275, 11 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a low-carbon microalloyed steel | |
| 610 | 1 | |a helical rolling | |
| 610 | 1 | |a microstructure | |
| 610 | 1 | |a bainite | |
| 610 | 1 | |a martensite-austenite constituent | |
| 610 | 1 | |a impact toughness | |
| 610 | 1 | |a низкоуглеродистые стали | |
| 610 | 1 | |a микролегированные стали | |
| 610 | 1 | |a винтовая прокатка | |
| 610 | 1 | |a микроструктуры | |
| 610 | 1 | |a ударная вязкость | |
| 701 | 1 | |a Derevyagina |b L. S. |g Lyudmila Sergeevna | |
| 701 | 1 | |a Gordienko |b A. I. |c specialist in the field of material science |c Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences |f 1982- |g Antonina Ildarovna |3 (RuTPU)RU\TPU\pers\46862 |9 22484 | |
| 701 | 1 | |a Surikova |b N. S. |g Natalya | |
| 701 | 1 | |a Volochaev |b M. N. |g Mikhail | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Отделение материаловедения |3 (RuTPU)RU\TPU\col\23508 |
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