Effects of P on microstructures and tensile properties in Ni17Cr and Ni17Cr15Fe model alloys

doi:10.1016/j.matchar.2023.112895

IMR OpenIR

	Effects of P on microstructures and tensile properties in Ni17Cr and Ni17Cr15Fe model alloys
	Li, Shaowei 1,2; Liu, Fang 2; Si, Tianxiao 2; Xue, Chaochao 1,2; Sun, Wenru 2,3
通讯作者	Liu, Fang(fangliu@imr.ac.cn) ; Sun, Wenru(wrsun@imr.ac.cn)
	2023-06-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	200 页码:14
摘要	In the present work, two model alloy systems which were NiCr (0Fe) and NiCrFe (15Fe) alloys with different phosphorus (P) contents were prepared and subjected to the same heat treatment. The influence of P on microstructures and 650 degrees C tensile properties in two model alloys was investigated. The results showed that the precipitation of intergranular alpha-Cr phases was inhibited by the addition of P and the addition of Fe made alpha-Cr phases tend to precipitate in granular form rather than lamellar form at grain boundaries. Meanwhile, the increase of P content promoted the grain growth for 0Fe alloys while had little effect for 15Fe alloys, and the proportion of Sigma 3 grain boundaries of the two model alloys both decreased with the increase of P content. The 650 degrees C yield and tensile strength of 0Fe alloys showed a faster decreasing trend with increasing the P content while the elongation both increased significantly. The main grain boundary strengthening mechanism gradually changed from the pinning effect of alpha-Cr phases to the Sigma 3 grain boundary strengthening and P atoms segregation strengthening with increasing the P content. Thus, the fracture mode transformed from single intergranular fracture to mixture of transgranular and intergranular fracture with the increase of P content. In addition, the intragranular strengthening effect of Fe and P also contributed to the strength of 15Fe alloys, which reduced the decline rate of tensile strength.
关键词	Model alloys Phosphorus Microstructure evolution Tensile properties
DOI	10.1016/j.matchar.2023.112895
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001054233600001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：3[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/321006/178994
专题	中国科学院金属研究所
通讯作者	Liu, Fang; Sun, Wenru
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Shaowei,Liu, Fang,Si, Tianxiao,et al. Effects of P on microstructures and tensile properties in Ni17Cr and Ni17Cr15Fe model alloys[J]. MATERIALS CHARACTERIZATION,2023,200:14.
APA	Li, Shaowei,Liu, Fang,Si, Tianxiao,Xue, Chaochao,&Sun, Wenru.(2023).Effects of P on microstructures and tensile properties in Ni17Cr and Ni17Cr15Fe model alloys.MATERIALS CHARACTERIZATION,200,14.
MLA	Li, Shaowei,et al."Effects of P on microstructures and tensile properties in Ni17Cr and Ni17Cr15Fe model alloys".MATERIALS CHARACTERIZATION 200(2023):14.