Patterns of the formation of the structure and properties of the X70 low-carbon steel after high-temperature helical rolling; AIP Conference Proceedings; Vol. 2310, iss. 1 : Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology
| Parent link: | AIP Conference Proceedings Vol. 2310, iss. 1 : Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology.— 2020.— [020113, 5 p.] |
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| Резюме: | Title screen The results of studies of the effect of high-temperature helical rolling and subsequent interrupted high-rate cooling on the formation of the structure and mechanical properties of the X70 low-carbon steel were presented. In comparison with the ferrite-pearlite structure of the hot-rolled steel, the dispersed structure was formed after this processing. It included a mixture of quasi-equiaxial ferrite grains, acicular bainite, the martensite-austenite component along the boundaries of bainite laths and a small fraction of troostite regions. Besides that, microhardness HV0.05 values increased up to 2370 MPa, as well as yield strength and ultimate tensile strength enhanced by up to 35% and 20%, respectively, compared to those of the hot-rolled state. The strength properties of the steel with the ferrite-bainite structure increased significantly (1.55 times) with a decrease in the test temperature. At the same time, ductility improved by up to 20% when tested under liquid nitrogen conditions. Режим доступа: по договору с организацией-держателем ресурса |
| Мова: | Англійська |
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2020
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| Онлайн доступ: | https://doi.org/10.1063/5.0034205 |
| Формат: | Електронний ресурс Частина з книги |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664850 |
| Резюме: | Title screen The results of studies of the effect of high-temperature helical rolling and subsequent interrupted high-rate cooling on the formation of the structure and mechanical properties of the X70 low-carbon steel were presented. In comparison with the ferrite-pearlite structure of the hot-rolled steel, the dispersed structure was formed after this processing. It included a mixture of quasi-equiaxial ferrite grains, acicular bainite, the martensite-austenite component along the boundaries of bainite laths and a small fraction of troostite regions. Besides that, microhardness HV0.05 values increased up to 2370 MPa, as well as yield strength and ultimate tensile strength enhanced by up to 35% and 20%, respectively, compared to those of the hot-rolled state. The strength properties of the steel with the ferrite-bainite structure increased significantly (1.55 times) with a decrease in the test temperature. At the same time, ductility improved by up to 20% when tested under liquid nitrogen conditions. Режим доступа: по договору с организацией-держателем ресурса |
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| DOI: | 10.1063/5.0034205 |