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Heat-affected zone crack healing in IN939 repaired joints using hot isostatic pressing
Xie, Jilin1,2; Ma, Yingche1; Xing, Weiwei1; Zhang, Long1; Ou, Meiqiong1,2; Liu, Kui1
Corresponding AuthorMa, Yingche(ycma@imr.ac.cn)
2018-05-01
Source PublicationWELDING IN THE WORLD
ISSN0043-2288
Volume62Issue:3Pages:471-479
AbstractSimulation 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.
KeywordIN 939 superalloy Microstructure HAZ cracks HIP Crack healing
DOI10.1007/s40194-018-0579-5
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000441244700003
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128884
Collection中国科学院金属研究所
Corresponding AuthorMa, Yingche
Affiliation1.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
Recommended Citation
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.
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