Excellent high-temperature strength and ductility of the ZrC nanoparticles dispersed molybdenum
文献类型：期刊论文
| 作者 | Jing, K.1,2; Liu, R.1 ; Xie, Z. M.1; Ke, J. G.1,2; Wang, X. P.1; Fang, Q. F.1; Liu, C. S.1; Wang, H.3; Li, G.3; Wu, X. B.1
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| 刊名 | ACTA MATERIALIA
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| 出版日期 | 2022-04-01 |
| 卷号 | 227 |
| ISSN号 | 1359-6454 |
| 关键词 | Nanostructure Mechanical properties Strengthening Interface Zirconium carbide |
| DOI | 10.1016/j.actamat.2022.117725 |
| 通讯作者 | Liu, R.(liurui@issp.ac.cn) ; Wu, X. B.(xbwu@issp.ac.cn) |
| 英文摘要 | The interface control is critical in the development of high-performance molybdenum (Mo) alloys for high-temperature applications like space reactors. In this work, nanostructured Mo-ZrC alloy with excellent mechanical properties at both room temperature and high temperatures was fabricated by nanoscale ZrC dispersion and interface control. The average grain size of Mo-ZrC alloy is only 0.67 mu m owing to the homogeneous dispersion of nanoscale ZrC particles. At room temperature, the ultimate tensile strength (UTS) and total elongation (TE) of the Mo-ZrC alloy are 928 MPa and 34.4%, respectively. At 1000 & nbsp;C, the UTS is still as high as 562 MPa, which is significantly higher than those reported in oxide dispersion-strengthened Mo alloys, while the TE remains a high value of 23.5%. Additionally, the recrystallization start temperature of Mo-ZrC alloy is about 1400 & nbsp;& nbsp;C, indicating remarkable thermal stability. First-principles calculations revealed that the interstitial oxygen reduces grain boundary cohesion, while C and ZrC could increase the fracture strength of the boundaries owing to the strong Mo-C bonds. The excellent mechanical properties and thermal stability of the Mo-ZrC alloy can be attributed to a synergistic effect of nanoscale ZrC particles dispersion strengthening, fine-grain strengthening, and grain boundary purification. The strategy could be applied to design other refractory alloys with both high strength and ductility for high-temperature applications.(C) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| WOS关键词 | PLASMA-FACING COMPONENTS ; MECHANICAL-PROPERTIES ; ODS MOLYBDENUM ; ENVIRONMENTAL EMBRITTLEMENT ; STRUCTURAL-MATERIALS ; THERMAL-STABILITY ; GRAIN-BOUNDARIES ; ALLOYS ; MICROSTRUCTURE ; FRACTURE |
| 资助项目 | National Key Research and Development Program of China[2019YFE03120001] ; National Key Research and Development Program of China[2017YFE0302400] ; National Key Research and Development Program of China[2017YFA0402800] ; National Natural Science Foundation of China[51671184] ; National Natural Science Foundation of China[51971213] ; National Natural Science Foundation of China[52173303] ; National Natural Science Foundation of China[52171084] ; Foundation of Science and Technology on Reactor Fuel and Materials Laboratory[STRFML-2018-22] ; HFIPS Director's Fund, Chinese Academy of Sciences[YZJJ202102] ; HFIPS Director's Fund, Chinese Academy of Sciences[YZJJZX202012] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000789652100004 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Foundation of Science and Technology on Reactor Fuel and Materials Laboratory ; HFIPS Director's Fund, Chinese Academy of Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/130835]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Liu, R.; Wu, X. B. |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jing, K.,Liu, R.,Xie, Z. M.,et al. Excellent high-temperature strength and ductility of the ZrC nanoparticles dispersed molybdenum[J]. ACTA MATERIALIA,2022,227. |
| APA | Jing, K..,Liu, R..,Xie, Z. M..,Ke, J. G..,Wang, X. P..,...&Wu, X. B..(2022).Excellent high-temperature strength and ductility of the ZrC nanoparticles dispersed molybdenum.ACTA MATERIALIA,227. |
| MLA | Jing, K.,et al."Excellent high-temperature strength and ductility of the ZrC nanoparticles dispersed molybdenum".ACTA MATERIALIA 227(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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