Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region

The hot tensile tests were conducted in this study to investigate the effects of Nb, B, Mo, and V on hot ductility of 25CrMo alloy steel in a temperature range of 650–850°C with strain rates of 0.005 and 0.5 s−1. Besides, the influences of ferrite transformation and precipitates on hot ductility wer...

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Autores principales:	Zheng Yaxu, Shen Wei, Zhu Liguang, Guo Zhihong, Wang Qi, Feng Jie, Li Yongliang, Cao Ruifang, Wu Jiayi
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	cr–mo-alloy steel hot ductility chemical composition strain rate Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
Acceso en línea:	https://doaj.org/article/a7e06e629be94de09c9d80453ca0ee3a
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spelling	oai:doaj.org-article:a7e06e629be94de09c9d80453ca0ee3a2021-12-05T14:10:50ZEffects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region2191-032410.1515/htmp-2021-0025https://doaj.org/article/a7e06e629be94de09c9d80453ca0ee3a2021-07-01T00:00:00Zhttps://doi.org/10.1515/htmp-2021-0025https://doaj.org/toc/2191-0324The hot tensile tests were conducted in this study to investigate the effects of Nb, B, Mo, and V on hot ductility of 25CrMo alloy steel in a temperature range of 650–850°C with strain rates of 0.005 and 0.5 s−1. Besides, the influences of ferrite transformation and precipitates on hot ductility were also investigated by the use of SEM and TEM. Thermo-Calc and J Mat Pro were used for calculating equilibrium precipitates and CCT curves, respectively. The results indicated that the hot ductility is deteriorated with the addition of 0.04% Nb due to Nb(C,N) particles and ferrite transformation. The addition of B inhibits ferrite transformation and improves hot ductility. The hot ductility is improved with increasing strain rate from 0.005 to 0.5 s−1 due to the nucleation and growth behavior of ferrite. The fast strain rate promotes nucleation of ferrite; however, the ferrite has no sufficient time to grow up. The addition of Mo inhibits ferrite transformation and improves hot ductility. The addition of 0.12% V has no obvious effect on ferrite transformation. The hot ductility has deteriorated a little with the addition of 0.12% V due to the solution V that increases stress during hot deformation.Zheng YaxuShen WeiZhu LiguangGuo ZhihongWang QiFeng JieLi YongliangCao RuifangWu JiayiDe Gruyterarticlecr–mo-alloy steelhot ductilitychemical compositionstrain rateTechnologyTChemical technologyTP1-1185Chemicals: Manufacture, use, etc.TP200-248ENHigh Temperature Materials and Processes, Vol 40, Iss 1, Pp 228-240 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cr–mo-alloy steel hot ductility chemical composition strain rate Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
spellingShingle	cr–mo-alloy steel hot ductility chemical composition strain rate Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248 Zheng Yaxu Shen Wei Zhu Liguang Guo Zhihong Wang Qi Feng Jie Li Yongliang Cao Ruifang Wu Jiayi Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
description	The hot tensile tests were conducted in this study to investigate the effects of Nb, B, Mo, and V on hot ductility of 25CrMo alloy steel in a temperature range of 650–850°C with strain rates of 0.005 and 0.5 s−1. Besides, the influences of ferrite transformation and precipitates on hot ductility were also investigated by the use of SEM and TEM. Thermo-Calc and J Mat Pro were used for calculating equilibrium precipitates and CCT curves, respectively. The results indicated that the hot ductility is deteriorated with the addition of 0.04% Nb due to Nb(C,N) particles and ferrite transformation. The addition of B inhibits ferrite transformation and improves hot ductility. The hot ductility is improved with increasing strain rate from 0.005 to 0.5 s−1 due to the nucleation and growth behavior of ferrite. The fast strain rate promotes nucleation of ferrite; however, the ferrite has no sufficient time to grow up. The addition of Mo inhibits ferrite transformation and improves hot ductility. The addition of 0.12% V has no obvious effect on ferrite transformation. The hot ductility has deteriorated a little with the addition of 0.12% V due to the solution V that increases stress during hot deformation.
format	article
author	Zheng Yaxu Shen Wei Zhu Liguang Guo Zhihong Wang Qi Feng Jie Li Yongliang Cao Ruifang Wu Jiayi
author_facet	Zheng Yaxu Shen Wei Zhu Liguang Guo Zhihong Wang Qi Feng Jie Li Yongliang Cao Ruifang Wu Jiayi
author_sort	Zheng Yaxu
title	Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
title_short	Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
title_full	Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
title_fullStr	Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
title_full_unstemmed	Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region
title_sort	effects of composition and strain rate on hot ductility of cr–mo-alloy steel in the two-phase region
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/a7e06e629be94de09c9d80453ca0ee3a
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Effects of composition and strain rate on hot ductility of Cr–Mo-alloy steel in the two-phase region

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