Multiple potential phase-separation paths in multi-principal element alloys
文献类型：期刊论文
| 作者 | Cao, Pei-Yu3; Liu, Feng3; Yuan, Fu-Ping2,3 ; Ma, En1; Wu, Xiao-Lei2,3; Wu XL(武晓雷); Liu F(刘峰); Liu F(刘峰); Yuan FP(袁福平)
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| 刊名 | MATERIALS TODAY NANO
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 28页码:10 |
| 关键词 | Multi-principal element alloy Phase separation Nucleation-growth Spinodal decomposition Short-range order Heterogeneity |
| ISSN号 | 2588-8420 |
| DOI | 10.1016/j.mtnano.2024.100511 |
| 通讯作者 | Ma, En(maen@xjtu.edu.cn) ; Wu, Xiao-Lei(xlwu@imech.ac.cn) |
| 英文摘要 | It is now well established that multi-principal element alloys (MPEAs) offer ample opportunities for exploring new compositions beyond those accessed previously by conventional alloys. However, there is one more realm of possibility presented by MPEAs that has not been touch upon thus far. Here we show that, different from conventional alloys based on a single host element, a given starting MPEA solid solution on its way towards equilibrium can take a rich variety of potential decomposition pathways via multi-stage phase separation, offering a wide range of composition destinations. If/when some of them are reached, assuming kinetically allowed, the multiple phase separation reactions one after another would lead to domains that are compositionally complex and spatially localized. This hypothetical scenario is demonstrated in this paper using a model that mimics Cr-CoNi MPEA, showing a preponderance of multiplicity even when assuming only fcc-based phases can form. The complex chemical heterogeneities created as such are expected to be an additional knob to turn for tuning spatially variable composition and chemical order and therefore mechanical properties. Our results thus advocate multiple phase separation possibilities with many potential paths and terminal chemical heterogeneities as yet another important characteristic that distinguishes MPEAs from conventional alloys. |
| WOS关键词 | SHORT-RANGE ORDER ; HIGH-ENTROPY ALLOY ; STACKING-FAULT ENERGY ; CRCONI ; THERMODYNAMICS ; DECOMPOSITION ; DEFORMATION ; NUCLEATION ; DUCTILITY ; MODELS |
| 资助项目 | National Key Research and Devel-opment Program of the Ministry of Science and Technology of China[2019YFA0209902] ; Natural Science Foundation of China[11988102] ; Natural Science Foundation of China[11972350] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001305555500001 |
| 资助机构 | National Key Research and Devel-opment Program of the Ministry of Science and Technology of China ; Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96487]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Ma, En; Wu, Xiao-Lei |
| 作者单位 | 1.Xi An Jiao Tong Univ, Ctr Alloy Innovat & Design CAID, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Pei-Yu,Liu, Feng,Yuan, Fu-Ping,et al. Multiple potential phase-separation paths in multi-principal element alloys[J]. MATERIALS TODAY NANO,2024,28:10. |
| APA | Cao, Pei-Yu.,Liu, Feng.,Yuan, Fu-Ping.,Ma, En.,Wu, Xiao-Lei.,...&袁福平.(2024).Multiple potential phase-separation paths in multi-principal element alloys.MATERIALS TODAY NANO,28,10. |
| MLA | Cao, Pei-Yu,et al."Multiple potential phase-separation paths in multi-principal element alloys".MATERIALS TODAY NANO 28(2024):10. |
入库方式： OAI收割
来源：力学研究所
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