Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting
文献类型：期刊论文
| 作者 | Zhang, Mina; Zhou, Xianglin; Wang, Dafeng; He, Longjun; Ye, Xuyang; Zhang, Wenwu |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2022 |
| 卷号 | 893 |
| 关键词 | SOLID-SOLUTION PHASE MECHANICAL-PROPERTIES MICROSTRUCTURE HEAT PRECIPITATION COMBINATION STABILITY ELEMENTS |
| 英文摘要 | The application scope and market demand for additive-manufactured high-entropy alloys (AM HEAs) have broadened of late. However, a long-standing problem associated with AM HEAs is their limited ductility. In this study, a dual-phase AlCoCuFeNi HEA, consisting of body-centered cubic (BCC) solid solution matrix with uniformly dispersed face-centered cubic (FCC) structured precipitates, was fabricated by selective electron beam melting (SEBM). SEBM involved a preheating process can enable the formation of Cu-rich FCC phases with needle-like and spherical morphologies, as well as nanotwins that in-situ precipitated from the metastable BCC(B2) matrix. The compressive strength and ductility of the SEBM HEA were superior to those of the HEAs processed by selective laser melting (SLM) AM technique. Furthermore, using selective electron beam remelting (SEB-RM) during SEBM could result in a higher relative density, finer microstructure, and enhanced compressive properties. Particularly, the SEB-RM sample exhibited a better compressive strength of 2572 MPa, a yield strength of 870 MPa, and a strain of 18.3%. The improved mechanical properties of SEBRM samples could be ascribed to the refined grains and the formation of FCC precipitates, mostly along the grain boundaries. This provides new insights into the dual-phase HEAs-fabricated via a combination of the SEBM additive manufacturing process and selective electron beam remelting-that exhibit in-situ strengthening. (c) 2021 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21231]  |
| 专题 | 2021专题_期刊论文 2022专题_期刊论文 |
| 作者单位 | 1.Zhang, WW (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Aero Engine Extreme Mfg Technol Zhejiang, Ningbo 315201, Peoples R China. 2.Zhou, XL (corresponding author), Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 10083, Peoples R China. 3.Zhang, MN |
| 推荐引用方式 GB/T 7714 | Zhang, Mina,Zhou, Xianglin,Wang, Dafeng,et al. Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,893. |
| APA | Zhang, Mina,Zhou, Xianglin,Wang, Dafeng,He, Longjun,Ye, Xuyang,&Zhang, Wenwu.(2022).Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting.JOURNAL OF ALLOYS AND COMPOUNDS,893. |
| MLA | Zhang, Mina,et al."Additive manufacturing of in-situ strengthened dual-phase AlCoCuFeNi high-entropy alloy by selective electron beam melting".JOURNAL OF ALLOYS AND COMPOUNDS 893(2022). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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