Segregation of Phosphorus and Precipitation of MNP-Type Phosphide at the Grain Boundary of IN706 Superalloy

IMR OpenIR

	Segregation of Phosphorus and Precipitation of MNP-Type Phosphide at the Grain Boundary of IN706 Superalloy
	Zhang, Sha; Huang, Linjie; Zhang, Anwen; Yu, Lianxu; Xin, Xin; Sun, Wenru; Sun, Xiaofeng; Sun, WR (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017-02-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	33 期号:2 页码:187-191
摘要	The effect of phosphorus content and heat treatment on the segregation of phosphorus and precipitation of phosphide at the grain boundary of IN706 alloy has been investigated. The phosphide had a stoichiometry of MNP (M = Nb, Ti and N = Ni, Fe, Cr) and an orthorhombic crystal structure. The solubility of phosphorus in the grain matrix of IN706 alloy was determined to be between 0.008% and 0.013%. When soaked at 980 degrees C for 5 min, the phosphide was noticeably precipitated at grain boundaries with the grain size unchanged. When soaked at 980 degrees C for 3 h, the grains grew significantly, but the phosphide stayed at original grain boundaries which outlined the grain shape before soaking. Soaking at 1060 degrees C for 2 h fully dissolved the pre-existing phosphide but phosphorus atoms were not distributed uniformly in the grain matrix. When the holding time at 1060 degrees C was extended to 10 h, the phosphorus atoms were distributed uniformly in the grain matrix by sufficient diffusion, and the phosphide could only be formed at grain boundaries during the 980 degrees C soaking. The precipitation of phosphide mainly relied on the phosphorus segregation which was built up by diffusion. Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.; The effect of phosphorus content and heat treatment on the segregation of phosphorus and precipitation of phosphide at the grain boundary of IN706 alloy has been investigated. The phosphide had a stoichiometry of MNP (M = Nb, Ti and N = Ni, Fe, Cr) and an orthorhombic crystal structure. The solubility of phosphorus in the grain matrix of IN706 alloy was determined to be between 0.008% and 0.013%. When soaked at 980 degrees C for 5 min, the phosphide was noticeably precipitated at grain boundaries with the grain size unchanged. When soaked at 980 degrees C for 3 h, the grains grew significantly, but the phosphide stayed at original grain boundaries which outlined the grain shape before soaking. Soaking at 1060 degrees C for 2 h fully dissolved the pre-existing phosphide but phosphorus atoms were not distributed uniformly in the grain matrix. When the holding time at 1060 degrees C was extended to 10 h, the phosphorus atoms were distributed uniformly in the grain matrix by sufficient diffusion, and the phosphide could only be formed at grain boundaries during the 980 degrees C soaking. The precipitation of phosphide mainly relied on the phosphorus segregation which was built up by diffusion. Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.
部门归属	[zhang, sha ; huang, linjie ; zhang, anwen ; yu, lianxu ; xin, xin ; sun, wenru ; sun, xiaofeng] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [zhang, sha] shangrao normal univ, jiangxi prov key lab polymer preparat & proc, shangrao 334001, peoples r china
关键词	Phosphorus Phosphide In706 Alloy Grain Boundary Segregation
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
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/321006/78311
专题	中国科学院金属研究所
通讯作者	Sun, WR (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, Sha,Huang, Linjie,Zhang, Anwen,et al. Segregation of Phosphorus and Precipitation of MNP-Type Phosphide at the Grain Boundary of IN706 Superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2017,33(2):187-191.
APA	Zhang, Sha.,Huang, Linjie.,Zhang, Anwen.,Yu, Lianxu.,Xin, Xin.,...&Sun, WR .(2017).Segregation of Phosphorus and Precipitation of MNP-Type Phosphide at the Grain Boundary of IN706 Superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,33(2),187-191.
MLA	Zhang, Sha,et al."Segregation of Phosphorus and Precipitation of MNP-Type Phosphide at the Grain Boundary of IN706 Superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 33.2(2017):187-191.