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The initiation and propagation mechanism of the overlapping zone cracking during laser solid forming of IN-738LC superalloy
外文标题:The initiation and propagation mechanism of the overlapping zone cracking during laser solid forming of IN-738LC superalloy
文献类型:期刊
作者:Xu, Jianjun[1]  Lin, Xin[2]  Guo, Pengfei[3]  Dong, Hongbiao[4]  Wen, Xiaoli[5]  Li, Qiuge[6]  Xue, Lei[7]  Huang, Weidong[8]  
机构:[1]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
[2]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
[3]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
[4]Univ Leicester, Dept Engn, Leicester LE1 7RH, Leics, England.;
[5]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
[6]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
[7]Northwestern Polytech Univ, Xian Bright Laser Technol LTD, Western Part South Second Ring Rd, Xian 710072, Shaanxi, Peoples R China.;
[8]Northwestern Polytech Univ, State Key Lab Solidificat Proc, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.,Northwestern Polytech Univ, MIIT China, Key Lab Met High Performance Addit Mfg & Innovat, 127 Youyixilu, Xian 710072, Shaanxi, Peoples R China.;
通讯作者:Lin, Xin;
年:2018
期刊名称:JOURNAL OF ALLOYS AND COMPOUNDS影响因子和分区
卷:749
期:该期刊无期号
页码范围:859-870
增刊:正刊
学科:材料科学
收录情况:SCI(E)(WOS:000432666200101)  
所属部门:材料学院
重要成果类型:重要期刊
人气指数:324
浏览次数:228
基金:National Natural Science Foundation of China [51323008, 51501154]; National Key Research and Development Programme of China [2016YFB1100104, 2016YFB1100600]; Key Scientific and Technological Innovation Team Project in Shaanxi Province [2014KCT-14]; Key Research and Development Program of Shaanxi Province [2016KTZDCY02-02]; Natural Science Foundation of Shannxi Province [2017JM5052]
关键词:Laser solid forming; IN-738LC; Liquation cracking; Solidification cracking; Residual stress
摘要:
The cracking mechanism, especially the initiation and propagation process of cracking, in the overlapping zone (OZ) of laser solid forming (LSF) of IN-738LC alloy was investigated. The results showed that both the solidification cracks and liquation cracks can be found in the OZ of the LSFed IN-738LC specimen. The liquation cracking can be ascribe to the local melting of gamma-gamma' eutectic at grain boundaries and could further become the initiation site of solidification cracks in the OZ of L ...More
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