Precipitation of M23C6 and its effect on tensile properties of 0.3C-20Cr-11Mn-1Mo-0.35N steel

IMR OpenIR

	Precipitation of M23C6 and its effect on tensile properties of 0.3C-20Cr-11Mn-1Mo-0.35N steel
	Zheng, Leigang; Hu, Xiaoqiang; Kang, Xiuhong; Li, Dianzhong; xqhu@imr.ac.cn
	2015
发表期刊	MATERIALS & DESIGN
ISSN	0261-3069
卷号	78 页码:42-50
摘要	The precipitation behavior of M23C6 carbides and its influence on the tensile properties were investigated in a novel 0.3C-20Cr-11Mn-1Mo-0.35N austenitic stainless steel isothermally aged at 900 degrees C. It was found that typical M23C6 carbides retaining a cube-on-cube crystallographic relation with austenite matrix precipitated on grain boundaries, twin boundaries and dislocations. With increasing aging time, the intergranular M23C6 carbides grew along the grain boundaries and into the adjacent austenite grain to form a film-shaped morphology. The precipitation of cellular M23C6 carbides on grain boundaries was a discontinuous reaction involving both the diffusion of C and Cr. And the formation of lamellar M23C6 carbides on incoherent twin boundaries associated with the gliding of partial dislocations and the formation of stacking faults. Meanwhile, the intragranular M23C6 carbides in rectangular or rhombic shapes initially nucleated on dislocations, and finally arranged in stringers corner-to-corner or face-to-face. The strength of the material was modestly improved by the precipitation of M23C6 carbides, although the strengthening effect was weakened by the dominant precipitation of cellular M23C6 after long-term aging duration. However, the ductility was significantly deteriorated by the intergranular and cellular M23C6. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属	[zheng, leigang ; hu, xiaoqiang ; kang, xiuhong ; li, dianzhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	M23c6 Carbide Aging Treatment Tensile Properties Cr-mn-n Austenitic Steel
资助者	National Natural Science Foundation of China [51301175]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75065
专题	中国科学院金属研究所
通讯作者	xqhu@imr.ac.cn
推荐引用方式 GB/T 7714	Zheng, Leigang,Hu, Xiaoqiang,Kang, Xiuhong,et al. Precipitation of M23C6 and its effect on tensile properties of 0.3C-20Cr-11Mn-1Mo-0.35N steel[J]. MATERIALS & DESIGN,2015,78:42-50.
APA	Zheng, Leigang,Hu, Xiaoqiang,Kang, Xiuhong,Li, Dianzhong,&xqhu@imr.ac.cn.(2015).Precipitation of M23C6 and its effect on tensile properties of 0.3C-20Cr-11Mn-1Mo-0.35N steel.MATERIALS & DESIGN,78,42-50.
MLA	Zheng, Leigang,et al."Precipitation of M23C6 and its effect on tensile properties of 0.3C-20Cr-11Mn-1Mo-0.35N steel".MATERIALS & DESIGN 78(2015):42-50.