Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy

doi:10.12442/j.issn.1002-185X.20220996

IMR OpenIR

	Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy
	Gai Yongchao 1; Zhang Rui 1; Zhou Zijian 1; Lv Shaomin 2,3; Cui Chuanyong 1; Qu Jinglong 2,3
通讯作者	Zhang Rui(rzhang@imr.ac.cn)
	2024
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	53 期号:1 页码:159-168
摘要	GH4151 alloy is a new type of casting and deformation superalloy of turbine disk with the temperature bearing capacity up to 800 degrees C. The alloy has severe elemental segregation during solidification, and main segregation elements include Nb, Ti and Mo. Meanwhile, the alloy contains a large amount of element C. In the late stages of solidification, due to the enrichment of elements in the residual liquid phase, a large number of harmful phases, including (gamma-gamma ') eutectic, Laves phase, eta phase and MC carbides, precipitate between the dendrites. The influence of C content in the GH4151 alloy on the segregation elements was investigated. Result show that increasing C content can reduce the segregation of Nb elements between dendrites. In addition, with the increase in C content, the dendrites become more developed and the interdendrite area decreases. The effects of homogenization heat treatment were studied at different temperatures from 1160 degrees C to 1210 degrees C. The melting points of (gamma-gamma ') eutectic and Laves phases are about 1180 degrees C, that of eta phase is about 1200 degrees C and that of MC carbide is higher than 1300 degrees C. At the same time, it is found that the 1170 degrees C/16 h+1200 degrees C/8 h double step homogenization heat treatment can not only eliminate the segregation in the ingot, but also avoid the holes caused by the overburning of the low melting point phases, which makes the billet more conducive to the subsequent billet deformation.
关键词	wrought superalloy solidification segregation harmful phases homogenization
DOI	10.12442/j.issn.1002-185X.20220996
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
WOS记录号	WOS:001191464400018
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：1[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/321006/185394
专题	中国科学院金属研究所
通讯作者	Zhang Rui
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Cent Iron & Steel Res Inst, Hightemp Mat Div, Beijing 100081, Peoples R China 3.Beijing CISRI GAONA Mat & Technol Co Ltd, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Gai Yongchao,Zhang Rui,Zhou Zijian,et al. Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2024,53(1):159-168.
APA	Gai Yongchao,Zhang Rui,Zhou Zijian,Lv Shaomin,Cui Chuanyong,&Qu Jinglong.(2024).Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy.RARE METAL MATERIALS AND ENGINEERING,53(1),159-168.
MLA	Gai Yongchao,et al."Solidification Segregation Behavior and Homogenization Heat Treatment of GH4151 Alloy".RARE METAL MATERIALS AND ENGINEERING 53.1(2024):159-168.