The tempering behavior of martensite/austenite islands on the mechanical properties of a low alloy Mn-Ni-Mo steel with granular bainite

doi:10.1016/j.mtcomm.2021.102166

IMR OpenIR

	The tempering behavior of martensite/austenite islands on the mechanical properties of a low alloy Mn-Ni-Mo steel with granular bainite
	Jiang, Zhonghua; Li, Yonghan; Yang, Zhendan; Wang, Pei; Li, Dianzhong; Li, Yiyi
通讯作者	Jiang, Zhonghua(zhjiang12s@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
	2021-03-01
发表期刊	MATERIALS TODAY COMMUNICATIONS
ISSN	2352-4928
卷号	26 页码:9
摘要	The effects of tempering on the microstructure and mechanical properties of a low alloy Mn-Ni-Mo steel were investigated. The results indicate that the steel is characterized by granular bainite consisting of bainitic ferrite, blocky islands of martensite and/or austenite (M-A islands) and film-type retained austenite (AR) before tempering. The volume fraction of AR decreases with an increase in the tempering temperature: slowly before 280 degrees C, rapidly at 350 degrees C, and approaching zero at 450 degrees C. When tempered at 280 degrees C, the steel has optimum mechanical properties because of the internal stress relaxation and the decomposition of blocky M-A islands, especially twinned martensite islands. Additionally, the enhancement of AR stability is to some extent responsible for improving the impact toughness. When tempered at 350-450 degrees C, tempering brittleness occurs, which results from the decomposition of the AR films into discrete flake-type carbides along the interfaces. Further increase in the tempering temperature results in high toughness and low strength of the steel, mainly due to the recovery and recrystallization of bainitic ferrite, and the precipitation of globular M3C carbides.
关键词	Granular bainite Tempering M-A islands Impact toughness Retained austenite
资助者	Liaoning Province Doctoral Research Initiation Fund ; Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.mtcomm.2021.102166
收录类别	SCI
语种	英语
资助项目	Liaoning Province Doctoral Research Initiation Fund[2020-BS-010] ; Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences[L2019F48]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000634314700007
出版者	ELSEVIER
引用统计	被引频次：35[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/162106
专题	中国科学院金属研究所
通讯作者	Jiang, Zhonghua; Li, Dianzhong
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Zhonghua,Li, Yonghan,Yang, Zhendan,et al. The tempering behavior of martensite/austenite islands on the mechanical properties of a low alloy Mn-Ni-Mo steel with granular bainite[J]. MATERIALS TODAY COMMUNICATIONS,2021,26:9.
APA	Jiang, Zhonghua,Li, Yonghan,Yang, Zhendan,Wang, Pei,Li, Dianzhong,&Li, Yiyi.(2021).The tempering behavior of martensite/austenite islands on the mechanical properties of a low alloy Mn-Ni-Mo steel with granular bainite.MATERIALS TODAY COMMUNICATIONS,26,9.
MLA	Jiang, Zhonghua,et al."The tempering behavior of martensite/austenite islands on the mechanical properties of a low alloy Mn-Ni-Mo steel with granular bainite".MATERIALS TODAY COMMUNICATIONS 26(2021):9.