{"title":"双丝+电弧增材+原位热处理制备NiTi合金的组织与力学性能","authors":"Jian Han, Xinya Chen, Guoyang Zhang, Bang Liu, Meiqing Meng, Yangchuan Cai, Hongbing Jiang, Mingjie Bi, Yueqian Hong, Yinbao Tian","doi":"10.1089/3dp.2023.0003","DOIUrl":null,"url":null,"abstract":"<p><p>In this study, NiTi shape memory alloy was prepared by double-wire + arc additive manufacturing plus <i>in situ</i> heat treatment using TA1 and ER-Ni welding wires as the raw materials. The results show that the microstructural evolution from the bottom to top is NiTi<sub>2</sub> + NiTi → NiTi + Ni<sub>3</sub>Ti + Ni<sub>4</sub>Ti<sub>3</sub> → NiTi + Ni<sub>4</sub>Ti<sub>3</sub> + Ni<sub>3</sub>Ti<sub>2</sub> + Ni<sub>3</sub>Ti + α-Ti. Complex thermal cycles led to the precipitation of Ni<sub>3</sub>Ti, which improves the hardness of the matrix (B2), and the average hardness value of the top region reaches 550.7 HV<sub>0.2</sub>. The fracture stress is 2075 ± 138.4 MPa and the fracture strain is 11.2 ± 1.27%. The sample shows 7.02% residual strain and 5.87% reversible strain after 15 cycles, and the stress hysteresis decreases with an increase in cyclic strain.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11442353/pdf/","citationCount":"0","resultStr":"{\"title\":\"Microstructure and Mechanical Properties of NiTi Alloy Prepared by Double-Wire + Arc Additive Manufacturing Plus <i>In Situ</i> Heat Treatment.\",\"authors\":\"Jian Han, Xinya Chen, Guoyang Zhang, Bang Liu, Meiqing Meng, Yangchuan Cai, Hongbing Jiang, Mingjie Bi, Yueqian Hong, Yinbao Tian\",\"doi\":\"10.1089/3dp.2023.0003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>In this study, NiTi shape memory alloy was prepared by double-wire + arc additive manufacturing plus <i>in situ</i> heat treatment using TA1 and ER-Ni welding wires as the raw materials. The results show that the microstructural evolution from the bottom to top is NiTi<sub>2</sub> + NiTi → NiTi + Ni<sub>3</sub>Ti + Ni<sub>4</sub>Ti<sub>3</sub> → NiTi + Ni<sub>4</sub>Ti<sub>3</sub> + Ni<sub>3</sub>Ti<sub>2</sub> + Ni<sub>3</sub>Ti + α-Ti. Complex thermal cycles led to the precipitation of Ni<sub>3</sub>Ti, which improves the hardness of the matrix (B2), and the average hardness value of the top region reaches 550.7 HV<sub>0.2</sub>. The fracture stress is 2075 ± 138.4 MPa and the fracture strain is 11.2 ± 1.27%. The sample shows 7.02% residual strain and 5.87% reversible strain after 15 cycles, and the stress hysteresis decreases with an increase in cyclic strain.</p>\",\"PeriodicalId\":54341,\"journal\":{\"name\":\"3D Printing and Additive Manufacturing\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11442353/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"3D Printing and Additive Manufacturing\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1089/3dp.2023.0003\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/6/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"3D Printing and Additive Manufacturing","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1089/3dp.2023.0003","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/6/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
Microstructure and Mechanical Properties of NiTi Alloy Prepared by Double-Wire + Arc Additive Manufacturing Plus In Situ Heat Treatment.
In this study, NiTi shape memory alloy was prepared by double-wire + arc additive manufacturing plus in situ heat treatment using TA1 and ER-Ni welding wires as the raw materials. The results show that the microstructural evolution from the bottom to top is NiTi2 + NiTi → NiTi + Ni3Ti + Ni4Ti3 → NiTi + Ni4Ti3 + Ni3Ti2 + Ni3Ti + α-Ti. Complex thermal cycles led to the precipitation of Ni3Ti, which improves the hardness of the matrix (B2), and the average hardness value of the top region reaches 550.7 HV0.2. The fracture stress is 2075 ± 138.4 MPa and the fracture strain is 11.2 ± 1.27%. The sample shows 7.02% residual strain and 5.87% reversible strain after 15 cycles, and the stress hysteresis decreases with an increase in cyclic strain.
期刊介绍：
3D Printing and Additive Manufacturing is a peer-reviewed journal that provides a forum for world-class research in additive manufacturing and related technologies. The Journal explores emerging challenges and opportunities ranging from new developments of processes and materials, to new simulation and design tools, and informative applications and case studies. Novel applications in new areas, such as medicine, education, bio-printing, food printing, art and architecture, are also encouraged.
The Journal addresses the important questions surrounding this powerful and growing field, including issues in policy and law, intellectual property, data standards, safety and liability, environmental impact, social, economic, and humanitarian implications, and emerging business models at the industrial and consumer scales.
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