Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing

doi:10.1007/s40194-018-0579-5

IMR OpenIR

	Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing
	Xie, Jilin 1,2; Ma, Yingche 1; Xing, Weiwei 1; Zhang, Long 1; Ou, Meiqiong 1,2; Liu, Kui 1
通讯作者	Ma, Yingche(ycma@imr.ac.cn)
	2018-05-01
发表期刊	WELDING IN THE WORLD
ISSN	0043-2288
卷号	62 期号:3 页码:471-479
摘要	Simulation defects in IN 939 superalloy were repaired by gas tungsten arc welding (GTAW) using Nimonic C263 as filler metal. The microstructures and chemical compositions of fusion zone under the condition of as-welded and post-weld heat treatment (PWHT) were investigated by optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron probe X-ray microanalysis (EPMA). Moreover, the liquation cracking and strain age cracking in heat-affected zone (HAZ) were characterized as well. Post-weld hot isostatic pressing (HIP) was also applied to heal the HAZ cracks. The results show that elements segregation at as-welded joints could be significantly reduced by PWHT. HAZ cracks consisted of liquation cracking and strain age cracking. The liquation cracking was shorter than the strain age cracking. HIP is an effective way to heal the cracks in the repaired joints especially for liquation cracking. Though the strain age cracking can be healed by HIP. the healed trace concentrated with Al, Ti, B, and Zr elements can still be detected. Post-weld HIP is a necessary process to obtain crack-fire joints.
关键词	IN 939 superalloy Microstructure HAZ cracks HIP Crack healing
DOI	10.1007/s40194-018-0579-5
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000441244700003
出版者	SPRINGER HEIDELBERG
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	http://ir.imr.ac.cn/handle/321006/128884
专题	中国科学院金属研究所
通讯作者	Ma, Yingche
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Xie, Jilin,Ma, Yingche,Xing, Weiwei,et al. Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing[J]. WELDING IN THE WORLD,2018,62(3):471-479.
APA	Xie, Jilin,Ma, Yingche,Xing, Weiwei,Zhang, Long,Ou, Meiqiong,&Liu, Kui.(2018).Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing.WELDING IN THE WORLD,62(3),471-479.
MLA	Xie, Jilin,et al."Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing".WELDING IN THE WORLD 62.3(2018):471-479.