Experimental observation and theoretical modeling of multi-stage power-law creep in metallic glass
文献类型：期刊论文
| 作者 | Cui JB5; Xing GH5; Lyu GJ4,5; Wang YJ(王云江)2,3; Wada, T1; Kato H1; Pineda E7; Qiao JC5,6 |
| 刊名 | ACTA MECHANICA
 |
| 出版日期 | 2025-07-04 |
| 页码 | 19 |
| ISSN号 | 0001-5970 |
| DOI | 10.1007/s00707-025-04420-8 |
| 通讯作者 | Lyu, G. J.(guojian.lyu@nwpu.edu.cn) ; Qiao, J. C.(qjczy@nwpu.edu.cn) |
| 英文摘要 | Power-law creep, where the creep strain rate follows a power-law relationship with time, is ubiquitous in crystalline materials. However, this behavior typically exhibits multi-stage characteristics in amorphous materials due to the intrinsic structural and dynamic heterogeneity. In this study, we systematically performed high-temperature creep experiments on a Pd20Pt20Cu20Ni20P20 metallic glass. It is found each stage in multi-stage creep is governed by different deformation mechanisms, influenced by factors such as temperature, stress, and structural relaxation. Experimental results indicate that increasing temperature causes the power-law creep behavior to change from two stages to three stages, while increasing stress does not alter this behavior. After cyclic creep, the power-law creep behavior reverts from three stages to two stages. Based on the quasi-point defect theory, we propose a creep constitutive model that includes the contribution of structural relaxation to creep behavior in the generic metastable materials. Theoretical modelings show creep response is primarily driven by two deformation mechanisms: the activation of inherent deformation units (shear microdomains), which dominate the early stage of creep; and the mechanism related to structural relaxation, with atomic correlations significantly influenced by temperature and aging conditions. The constitutive model reveals the factors influencing the power-law creep and clarifies the intrinsic mechanism underlying the transition from two stages to three stages. These mechanisms align with the thermal and mechanical effects observed in the experiments. |
| 分类号 | 二类 |
| WOS关键词 | PLASTIC-DEFORMATION ; ACTIVATION-ENERGY ; FREE-VOLUME ; FLOW ; RELAXATION ; MECHANISM ; DYNAMICS |
| 资助项目 | NSFC[52271153] ; NSFC[12472069] ; NSFC[52301219] ; NSFC[12472112] ; Natural Science Foundation of Chongqing, China[CSTB2023NSCQ-MSX0573] ; Fundamental Research Funds for the Central Universities[5000230147] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001522685400001 |
| 资助机构 | NSFC ; Natural Science Foundation of Chongqing, China ; Fundamental Research Funds for the Central Universities |
| 其他责任者 | Lyu GJ，Qiao JC |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/102262]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Tohoku Univ, Inst Mat Res, Sendai 9808577, Japan; 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; 4.Northwestern Polytech Univ, Chongqing Innovat Ctr, Chongqing 401135, Peoples R China; 5.Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China; 6.Northwestern Polytech Univ, State Key Lab Clean & Efficient Turbomachinery Pow, Xian, Peoples R China 7.Univ Politecn Cataluna, Inst Energy Technol, Dept Phys, Barcelona 08019, Spain; |
| 推荐引用方式 GB/T 7714 | Cui JB,Xing GH,Lyu GJ,et al. Experimental observation and theoretical modeling of multi-stage power-law creep in metallic glass[J]. ACTA MECHANICA,2025:19. |
| APA | Cui JB.,Xing GH.,Lyu GJ.,王云江.,Wada, T.,...&Qiao JC.(2025).Experimental observation and theoretical modeling of multi-stage power-law creep in metallic glass.ACTA MECHANICA,19. |
| MLA | Cui JB,et al."Experimental observation and theoretical modeling of multi-stage power-law creep in metallic glass".ACTA MECHANICA (2025):19. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。