High strength and high toughness heat-resistant martensitic steel produced by ECAP

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	High strength and high toughness heat-resistant martensitic steel produced by ECAP
	Zhang Lingyi 1,2; Yang Gang 2,3; Huang Chonyxiang 3; Chen Weiliang 1; Wang Limin 2
通讯作者	Zhang Lingyi(zhanglingyi2@163.com)
	2008-04-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	44 期号:4 页码:409-413
摘要	The microstructures and mechanical properties of 1Cr16Co5Ni2MoWVNbN martensite heat-resistant steel subjected to equal channel angular pressing (ECAP) for one pass and subsequent heat treatment were investigated. It was found that most of the martensite lathes had been broken into sub-grain and dislocation cell, and the second phase nano-particles (M23C6) distributed more uniformly after ECAP deformation. By annealing at 680 degrees C for 2 h, the dislocation density decreased and more amount of equiaxed subgrains with size of several hundred of nanometers formed, while the recovery and recrystallization occured. The yield strength of the ECAPed sample increased significantly (1400 MPa), but its elongation and static toughness decreased a lot (7.3% and 100 MJ/m(3)). After subsequent annealing treatment, both the strength and static toughness of the steel can be increased simultaneously (1044 MPa and 181.6 MJ/m(3)) in comparison with those of initial state.
关键词	heat-resistant steel equal channel angular pressing strength plasticity static toughness
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000256271900005
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：8[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/321006/94456
专题	中国科学院金属研究所
通讯作者	Zhang Lingyi
作者单位	1.Kunming Univ Sci & Technol, State Key Lab Vacuum Met, Kunming 650093, Peoples R China 2.Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang Lingyi,Yang Gang,Huang Chonyxiang,et al. High strength and high toughness heat-resistant martensitic steel produced by ECAP[J]. ACTA METALLURGICA SINICA,2008,44(4):409-413.
APA	Zhang Lingyi,Yang Gang,Huang Chonyxiang,Chen Weiliang,&Wang Limin.(2008).High strength and high toughness heat-resistant martensitic steel produced by ECAP.ACTA METALLURGICA SINICA,44(4),409-413.
MLA	Zhang Lingyi,et al."High strength and high toughness heat-resistant martensitic steel produced by ECAP".ACTA METALLURGICA SINICA 44.4(2008):409-413.