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

doi:10.1007/s40194-018-0579-5

CORC > 金属研究所 > 中国科学院金属研究所

	Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing
	Xie, JL ; Ma, YC ; Xing, WW ; Zhang, L ; Ou, MQ ; Liu, K
刊名	WELDING IN THE WORLD
	2018-05-01
卷号	62 期号:3 页码:471-479
关键词	IN 939 superalloy Microstructure HAZ cracks HIP Crack healing
ISSN号	0043-2288
DOI	10.1007/s40194-018-0579-5
英文摘要	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.
学科主题	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000441244700003
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80194]
专题	金属研究所_中国科学院金属研究所
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, JL,Ma, YC,Xing, WW,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, JL,Ma, YC,Xing, WW,Zhang, L,Ou, MQ,&Liu, K.(2018).Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing.WELDING IN THE WORLD,62(3),471-479.
MLA	Xie, JL,et al."Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing".WELDING IN THE WORLD 62.3(2018):471-479.