| Effect of interlayer addition on microstructure and mechanical properties of NiTi/stainless steel joint by electron beam welding | |
| Niu, H.1,2; Jiang, H. C.1; Zhao, M. J.1; Rong, L. J.1 | |
| Corresponding Author | Jiang, H. C.(hcjiang@imr.ac.cn) ; Rong, L. J.(ljrong@imr.ac.cn) |
| 2021-01-20 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 61Pages:16-24 |
| Abstract | NiTi/Stainless Steel (SS) sheets have been welded via a vacuum electron beam welding process, with three methods (offsetting electron beam to SS side without interlayer, adding Ni interlayer and adding FeNi interlayer), to promote mechanical properties of the NiTi/SS joints. The joints with different interlayers are all fractured in the weld zone near the NiTi side, which is attributed to the enrichment of intermetallic compounds including Fe2Ti and Ni3Ti. The fracture mechanisms of different joints are strongly dependent on the types of interlayers, and the joints without interlayer, adding Ni interlayer and adding FeNi interlayer exhibit cleavage fracture, intergranular fracture and mixed fracture composed of cleavage and tearing ridge, respectively. Compared with the brittle laves phase Fe2Ti, Ni3Ti phase can exhibit certain plasticity, block the crack propagation and change the direction of crack propagation. The composite structure of Ni3Ti and Fe2Ti will be formed when the FeNi alloy is taken as the interlayer, which provides the joint excellent mechanical properties, with rupture strength of 343 MPa. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | NiTi Stainless steel Electron beam welding Interlayer Mechanical property |
| DOI | 10.1016/j.jmst.2020.05.043 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000600062800002 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/158743 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiang, H. C.; Rong, L. J. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| Recommended Citation GB/T 7714 | Niu, H.,Jiang, H. C.,Zhao, M. J.,et al. Effect of interlayer addition on microstructure and mechanical properties of NiTi/stainless steel joint by electron beam welding[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,61:16-24. |
| APA | Niu, H.,Jiang, H. C.,Zhao, M. J.,&Rong, L. J..(2021).Effect of interlayer addition on microstructure and mechanical properties of NiTi/stainless steel joint by electron beam welding.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,61,16-24. |
| MLA | Niu, H.,et al."Effect of interlayer addition on microstructure and mechanical properties of NiTi/stainless steel joint by electron beam welding".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 61(2021):16-24. |
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