Unlocking ultrahigh strength in dilute Al alloys: The synergy of stable grain boundary networks and solute clusters
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-22 更新2026-01-10 收录
下载链接：
https://ggjsfwdata.licp.cn/dataDetails/fcee86d3827d4755b82c209117d932e5
下载链接
链接失效反馈官方服务：
资源简介：
The strength of Al alloys can be significantly enhanced through grain refinement and aging hardening. However, improving strength through aging hardening in nanograins is challenging due to the poor structural stability, which leads to grain growth and precipitation coarsening. Herein, a nanostructured AA6061 alloy with grain size of 26 nm and a high proportion of relaxed grain boundaries (GB) was fabricated using cryogenic high-pressure
torsion (HPT). During aging treatment, Mg-Si-Cu co-segregated at GBs and high density of Mg-Si solute clusters (approximately 5.6 × 1023 m-3) rather than intermetallic precipitates formed within the nanograins, resulting in
a record strength as high as 805 MPa.
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-22
