Plastically deformed La-Fe-Si: Microstructural evolution, magnetocaloric effect and anisotropic thermal conductivity
文献类型：期刊论文
| 作者 | Ouyang, Yi; Zhang, Mingxiao; Yan, Aru; Wang, Wen; Guilloud, Francois; Liu, Jian |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2020 |
| 卷号 | 187页码:1-11 |
| 关键词 | ADIABATIC TEMPERATURE-CHANGE MAGNETIC REFRIGERATION ENTROPY CHANGE DEFORMATION TRANSITION NI COMPOSITES ALLOY IRON HOT |
| DOI | 10.1016/j.actamat.2020.01.030 |
| 英文摘要 | La(Fe,Si)(13)-based alloys are considered to be one of the most promising magnetocaloric materials for solid state cooling. However, the intrinsic brittleness of NaZn13-type functional phase (1:13 phase) obstructs the shaping of La-Fe-Si alloys into desired geometries for the applications in magnetic cooling devices. Here, by exploiting the excellent deformability of alpha-Fe phase, we propose a near-net shaping method of open die-forging to prepare La-Fe-Si thin plates. This novel approach is demonstrated for the first time to exhibit several advantages including producing full-dense materials, facilitating the phase formation, and maintaining large magnetocaloric effect. The microstructural and texture evolution have been systematically investigated for the pre-deformed and annealed La-Fe-Si alloys. Large magnetic entropy change of 14 J/kg K at 2 T is obtained in the annealed sample and 11 J/kg K for the hydrogenated sample without hydrogen-induced cracking. Furthermore, a unique dual-phase structure consisting of aligned alpha-Fe phase and non-equiaxial 1:13 grains brings about the significant anisotropic thermal conductivity in cross-plane and in-plane directions for the plastically-deformed plates. This new insight would greatly benefit the design of high efficient magnetic refrigerator with one-way enhanced thermal conduction. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 学科主题 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19833]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Liu, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China. 2.Liu, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ouyang, Yi,Zhang, Mingxiao,Yan, Aru,et al. Plastically deformed La-Fe-Si: Microstructural evolution, magnetocaloric effect and anisotropic thermal conductivity[J]. ACTA MATERIALIA,2020,187:1-11. |
| APA | Ouyang, Yi,Zhang, Mingxiao,Yan, Aru,Wang, Wen,Guilloud, Francois,&Liu, Jian.(2020).Plastically deformed La-Fe-Si: Microstructural evolution, magnetocaloric effect and anisotropic thermal conductivity.ACTA MATERIALIA,187,1-11. |
| MLA | Ouyang, Yi,et al."Plastically deformed La-Fe-Si: Microstructural evolution, magnetocaloric effect and anisotropic thermal conductivity".ACTA MATERIALIA 187(2020):1-11. |
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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