Study on the influence of Si on the microstructure and mechanical properties of DZ125 recycled alloy
文献类型：期刊论文
| 作者 | Chen, Chu1; Ning, Likui1; Xie, Zhiwen2; Liu, Enze1; Tan, Zheng1; Li, Haiying1; Tong, Jian1; Liu, Weihua1; Zheng, Zhi1 |
| 刊名 | MATERIALS TODAY COMMUNICATIONS
 |
| 出版日期 | 2025 |
| 卷号 | 42页码:10 |
| 关键词 | DZ125 alloy Recycled material Si Mechanical behavior |
| DOI | 10.1016/j.mtcomm.2024.111352 |
| 通讯作者 | Ning, Likui(lkning@imr.ac.cn) |
| 英文摘要 | The microstructure of DZ125 alloy remelted material with varying Si contents was observed and analyzed using optical, scanning electron, and transmission electron microscopes. We investigated the correlation between Si and changes in mechanical properties, focusing on Silicon's impact on the alloy's microstructure and mechanical attributes. Results revealed that as Si content increases in the as-cast microstructure, the gamma' phase size becomes finer, with minimal effects on its volume fraction. Carbide content and size increased, showing a gradual concentration in size distribution, while gamma + gamma' eutectic content and dendrite arm spacing remained largely unaffected. Following standard heat treatment, carbides transformed into fine granular particles, the gamma' phase size refined further, and both gamma' phase and gamma + gamma' eutectic content decreased, with no significant dendrite arm spacing changes. The influence of Si on the heat-treated microstructure followed a similar pattern to that of the as-cast condition but was more pronounced. Room temperature tensile tests indicated that increasing Si content initially enhanced elongation at break and reduction of area at fracture, peaking at 0.08 % Si, before declining. Dimple count increased, while tensile strength remained mostly unaffected. Stress rupture tests at 760 degrees C/725 MPa and 980 degrees C/235 MPa showed that the addition of Si significantly enhanced the endurance performance, with an improvement of over 20 %. |
| 资助项目 | National Key Research and Develop-ment Program of China[2022YFB3705004] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001394331800001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Develop-ment Program of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ning, Likui |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol Liaoning, Sch Mech Engn & Automat, Anshan 114051, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Chu,Ning, Likui,Xie, Zhiwen,et al. Study on the influence of Si on the microstructure and mechanical properties of DZ125 recycled alloy[J]. MATERIALS TODAY COMMUNICATIONS,2025,42:10. |
| APA | Chen, Chu.,Ning, Likui.,Xie, Zhiwen.,Liu, Enze.,Tan, Zheng.,...&Zheng, Zhi.(2025).Study on the influence of Si on the microstructure and mechanical properties of DZ125 recycled alloy.MATERIALS TODAY COMMUNICATIONS,42,10. |
| MLA | Chen, Chu,et al."Study on the influence of Si on the microstructure and mechanical properties of DZ125 recycled alloy".MATERIALS TODAY COMMUNICATIONS 42(2025):10. |
入库方式： OAI收割
来源：金属研究所
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