| METALS AND METAL MATRIX COMPOSITES |
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| Microstructure and Properties of TIG Welded Joint of FeCrAl Alloy Plates |
| WANG Henglin1,2, CAO Rui1,2*, CHENG Hongbei1,2, QIN Wei3, ZHOU Shuangshuang3, YAN Yingjie1,2
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1 The State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2 School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
3 Advanced Technology & Materials Co., Ltd., China Iron & Steel Research Technology Co., Ltd., Beijing 100081, China |
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Abstract TIG welding was used to weld FeCrAl alloy sheet with two sides and multiple layers. The filling material was FeCrAl alloy wire. The weld zone is composed of coarse ferrite microstructure. The heat affected zone is composed of fine equiaxed crystal microstructure. The effect of wel-ding parameters on microstructure and mechanical properties of welded joints was investigated. The maximum tensile strength of the welded joint after heat treatment reaches 400 MPa, about 52.2% of the base metal’ strength. The maximum tensile strength of the welded joint after heat treatment reaches 482 MPa, about 62.3% of the base metal’ strength, which can meet the mechanical properties of the welded joint of FeCrAl alloy sheet as load-bearing structure.
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Published:
Online: 2023-12-19
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| Fund:Key Project of the Science and Technology of Gansu Province (22ZD6GA008) and the National Natural Science Foundation of China (52175325, 51961024, 52071170). |
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2023, Vol. 37 
