Effect of Thermo-Mechanical Processing on Grain Boundary Character Distribution of GH3625 Superalloy

	Effect of Thermo-Mechanical Processing on Grain Boundary Character Distribution of GH3625 Superalloy
	Gao Yubi; Ding Yutian; Chen Jianjun; Xu Jiayu; Ma Yuanjun; Wang Xingmao
	2019-11
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	48 期号:11 页码:3585-3592
摘要	With this prerequisite that the chemical composition of GH3625 alloy will not be changed, the high temperature microstructure stability and service performance reliability of alloys are improved by optimizing grain boundary engineering (GBE) and controlling the microstructure of alloys. The effect of thermal-mechanical processing on the grain boundary character distribution (GBCD) of GH3625 superalloy was investigated by the electron backscattered diffraction (EBSD) technique and orientation image microcopy (OIM). The results show that the optimization of the grain boundary character distribution (GBCD) of GH3625 superalloy is mainly achieved by Sigma 3(n) grain boundaries formed during the recrystallization process, and is mainly affected by the cold deformation and annealing process. The length fraction of low Sigma CSL grain boundaries in GH3625 superalloy decreases with the increase of cold deformation, while increases with the increase of annealing temperature. Meanwhile, the length fraction of low Sigma CSL (coincident site lattice, Sigma <= 29 by Palunbo-Aust criterion) grain boundaries increases to more than 63.16% after 35% cold deformed and subsequent annealing at 1120 degrees C for 15 min. In addition, large sized grain-clusters appear in GH3625 superalloy, and boundaries have Sigma 3(n) misorientations inside the grains-cluster. The size of the grain-clusters and the amount of Sigma 3(n) grain boundaries inside the grains-cluster decrease with the increase of cold deformation, but increase with the increase of annealing temperature.
关键词	GH3625 alloy thermo-mechanical processing grain boundary character distribution grain boundary engineering low Sigma CSL grain boundary
收录类别	SCI ; SCIE
语种	中文
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000500083600024
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
EI入藏号	20201008264870
EI主题词	Grain boundaries
EI分类号	531 Metallurgy and Metallography - 537.1 Heat Treatment Processes - 801 Chemistry - 951 Materials Science
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/64323
专题	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Ding Yutian
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Gao Yubi,Ding Yutian,Chen Jianjun,et al. Effect of Thermo-Mechanical Processing on Grain Boundary Character Distribution of GH3625 Superalloy[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(11):3585-3592.
APA	Gao Yubi,Ding Yutian,Chen Jianjun,Xu Jiayu,Ma Yuanjun,&Wang Xingmao.(2019).Effect of Thermo-Mechanical Processing on Grain Boundary Character Distribution of GH3625 Superalloy.RARE METAL MATERIALS AND ENGINEERING,48(11),3585-3592.
MLA	Gao Yubi,et al."Effect of Thermo-Mechanical Processing on Grain Boundary Character Distribution of GH3625 Superalloy".RARE METAL MATERIALS AND ENGINEERING 48.11(2019):3585-3592.