Materials Reports  2021, Vol. 35 Issue (Z1): 357-361 |
| METALS AND METAL MATRIX COMPOSITES |
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| Microstructure and Mechanical Properties of Laser Cladding Process on Hastelloy X |
| XU Lianyong1,2, GAO Yalin1,2, ZHAO Lei1,2, HAN Yongdian1,2, JING Hongyang1,2
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1 School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
2 Tianjin Key Laboratory of Advanced Joining Technology, Tianjin 300072, China |
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Abstract Based on the additive manufacturing method of laser cladding, microstructures and mechanical properties of the nickel-based superalloy Hastelloy X are studied. The direct energy depositing process uses laser beam to melt powders and to deposit layers of materials for buil-ding components. By optimizing the laser cladding process parameters, a parameter table is finally selected to deposit Hastelloy X without defects at the maximum deposition efficiency. The results show that, compared with as-forged Hastelloy X, the laser cladding process gives rise to recrystallization during continuous deposition, which results in the occurrence of finely equiaxed grains with a smaller grain size and improving of the microhardness and the tensile performance of the the as-deposited specimen, but slightly reduces the plastic deformation of the part. The tensile fracture mechanism of de-posited part at 750 ℃ is ductile-brittle fracture.
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Published: 16 July 2021
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| Fund:National Natural Science Foundation of China (52075374). |
| About author:: Lianyong Xu received his Ph.D. degree in materials processing engineering from School of Materials Science and Engineering, Tianjin University in 2007. He is currently a professor in School of Materials Science and Engineering, Tianjin University and mainly engaged in advanced material manufacturing, structural high temperature integrity evaluation, structural creep/fatigue deformation mechanism and application research, and has published more than 150 papers in important journals at home and abroad, and applied for more than 24 invention patents (American 1).Lei Zhao, associate professor, School of Materials Science and Engineering, Tianjin University. graduated from Tianjin University in July 2012 with a Ph.D. in materials processing engineering; from July 2012 to December 2014, he was a postdoctoral fellow at Beijing University of Aeronautics and Astronautics. He is mainly engaged in advanced material manufacturing, structural high temperature integrity evaluation, structural creep/fatigue deformation mechanism and application research, and has published more than 40 papers in important journals at home and abroad, and applied for more than 20 invention patents. |
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1 田礼熙. Y2O3添加对一种镍基高温合金组织及性能的影响. 硕士学位论文,华中科技大学, 2008.
2 张汝松, 李志国, 刘昌峰.石油化工腐蚀与防护, 2012, 29(1),33.
3 平学龙,符寒光,孙淑婷.材料导报:综述篇, 2019, 33(9),1535.
4 汤海波, 吴宇, 张述泉, 等.精密成形工程, 2019, 11(4),58.
5 李飘,姚卫星.材料导报:综述篇, 2020, 34(9), 9124.
6 Thivillon L, Bertrand Ph, Laget B, et al. Journal of Nuclear Materials, 2009, 385(2),236.
7 Sakin R.Alexandria Engineering Journal, 2018, 57(1), 35.
8 Lewis G K, Schlienger E.Materials & Design, 2000, 21(4),417.
9 Diniz Neto O O, Alcalde A M, Vilar R.Journal of Laser Applications, 2007, 19(2),84.
10 杨义成. 燃气轮机叶片激光增材修复基础研究.硕士学位论文 机械科学研究总院, 2017.
11 Liang Y, Li J, Li A, et al.Journal of Alloys and Compounds, 2017, 697, 174.
12 谭华,张凤英,温如军,等.中国激光, 2011, 38(10),52. |
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