High-throughput investigation of temperature-dependent creep mechanisms in Mg-Zn alloys using nanoindentation
文献类型：期刊论文
| 作者 | Li, Na; Li YQ(李玉琼); Yang, Lingwei; Wang, Chuanyun |
| 刊名 | PHYSICA SCRIPTA
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 100期号:5页码:12 |
| 关键词 | Mg/Mg-Zn diffusion couple indentation creep basal slip and twinning strain rate sensitivity |
| ISSN号 | 0031-8949 |
| DOI | 10.1088/1402-4896/adc642 |
| 通讯作者 | Li, Yuqiong(liyuqiong@imech.ac.cn) ; Yang, Lingwei(lingwei.yang@outlook.com) |
| 英文摘要 | A novel high-throughput methodology is proposed to investigate the influence of Zn alloying and temperature on the creep mechanisms of Mg through a combination of a Mg/Mg-Zn diffusion couple and advanced nanomechanical testing. Systematic nanoindentation creep tests were conducted at room temperature (RT) and elevated temperatures (100 degrees C, 200 degrees C and 300 degrees C) within individual grains in a Mg/Mg-Zn diffusion couple with Zn content ranging from 0 to 0.8 at%. Electron backscattered diffraction-assisted trace analysis was employed to characterize the activated deformation mechanisms, including twinning and dislocation slip. The activation volume and creep activation energy were analyzed to elucidate the fundamental creep mechanisms as functions of temperature and Zn content. At the low temperature regime (RT-100 degrees C), the creep activation energy was approximate to 80 kJ mol(-1), indicating that twinning dominated deformation mechanisms. At the high temperature regime (>200 degrees C), all alloys converge to a relatively high activation energy, of the order of 150 kJ mol(-1). This is in good agreement with the activation energy reported for cross-slip deformation mechanisms. The results indicate that the derived activation energy aligns with the transition in creep deformation mechanisms, shifting from twin boundary migration to cross-slip. Moreover, Zn alloying significantly enhances creep resistance, particularly within the temperature range of RT to 200 degrees C. |
| 分类号 | 二类 |
| WOS关键词 | STRAIN-RATE ; DEFORMATION MECHANISMS ; ELEVATED-TEMPERATURES ; HCP METALS ; BEHAVIOR ; TRANSITION ; ALUMINUM ; ROOM |
| 资助项目 | Youth Innovation Promotion Association of the Chinese Academy of Sciences https://doi.org/10.13039/501100004739[Y2022009] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2024NSFSC0433] ; Sichuan Science and Technology Program[12302109] ; Sichuan Science and Technology Program[61575209] ; National Natural Science Foundation of China[2020B0909010003] ; High-level Innovation Research Institute Program of Guangdong Province |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001465466800001 |
| 资助机构 | Youth Innovation Promotion Association of the Chinese Academy of Sciences https://doi.org/10.13039/501100004739 ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Sichuan Science and Technology Program ; National Natural Science Foundation of China ; High-level Innovation Research Institute Program of Guangdong Province |
| 其他责任者 | 李玉琼 ; Yang, Lingwei |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100828]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Li, Na,Li YQ,Yang, Lingwei,et al. High-throughput investigation of temperature-dependent creep mechanisms in Mg-Zn alloys using nanoindentation[J]. PHYSICA SCRIPTA,2025,100(5):12. |
| APA | Li, Na,李玉琼,Yang, Lingwei,&Wang, Chuanyun.(2025).High-throughput investigation of temperature-dependent creep mechanisms in Mg-Zn alloys using nanoindentation.PHYSICA SCRIPTA,100(5),12. |
| MLA | Li, Na,et al."High-throughput investigation of temperature-dependent creep mechanisms in Mg-Zn alloys using nanoindentation".PHYSICA SCRIPTA 100.5(2025):12. |
入库方式： OAI收割
来源：力学研究所
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