Superior superelasticity of laser powder bed fusion fabricated NiTi alloys achieved by post heat treatment
文献类型：期刊论文
| 作者 | Jiang, Muchi1,2; Jiang, Hao3,4; Xi, Rui3,4; Ren, Dechun1,2; Ji, Haibin1,2; Lei, Jiafeng1,2; Wang, Xiebin3,4 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 257页码:6 |
| 关键词 | Additive manufacturing Laser powder bed fusion Shape memory alloys NiTi Superelasticity |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2024.116476 |
| 通讯作者 | Ren, Dechun(dcren14s@imr.ac.cn) ; Ji, Haibin(hbji@imr.ac.cn) ; Wang, Xiebin(xiebin.wang@email.sdu.edu.cn) |
| 英文摘要 | In this work, we found that the long strip-like Ti4Ni2Ox phase, concentrated at the grain boundaries (GBs), is the primary reason for the inferior superelasticity of laser powder bed fusion (L-PBF) fabricated NiTi alloys. In order to improve the superelasticity of L-PBF produced NiTi alloy, we proposed a simple yet efficient heat treatment protocol, which includes solution treatment at 1273 K for 3 h and subsequent aging treatment at 623 K for 0.5 h. The solution treatment leads to the spheroidization and coarsening of the Ti4Ni2Ox phase, as well as the growth of NiTi grains. The grain growth captures Ti4Ni2Ox phase at GBs into the grain interior, which improves largely the integrity of the matrix. Aging treatment introduces Ni4Ti3 nanoprecipiates, which could improve the stability of superelasiticity. As a result, NiTi alloy with excellent superelasticity is obtained, which shows a recovery rate of >80 % (pre-strian of 5 %) after 317 cycles. |
| 资助项目 | Foundation of Shandong Province[tsqn202211002] ; Natural Science Foundation of Shandong Province[ZR2022ZD08] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001371049000001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Foundation of Shandong Province ; Natural Science Foundation of Shandong Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ren, Dechun; Ji, Haibin; Wang, Xiebin |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Shandong Univ, State key Lab Adv Equipment & Technol Met Forming, Jingshi Rd 17923, Jinan 250061, Peoples R China 4.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jingshi Rd 17923, Jinan 250061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Muchi,Jiang, Hao,Xi, Rui,et al. Superior superelasticity of laser powder bed fusion fabricated NiTi alloys achieved by post heat treatment[J]. SCRIPTA MATERIALIA,2025,257:6. |
| APA | Jiang, Muchi.,Jiang, Hao.,Xi, Rui.,Ren, Dechun.,Ji, Haibin.,...&Wang, Xiebin.(2025).Superior superelasticity of laser powder bed fusion fabricated NiTi alloys achieved by post heat treatment.SCRIPTA MATERIALIA,257,6. |
| MLA | Jiang, Muchi,et al."Superior superelasticity of laser powder bed fusion fabricated NiTi alloys achieved by post heat treatment".SCRIPTA MATERIALIA 257(2025):6. |
入库方式： OAI收割
来源：金属研究所
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