Investigation of nanoscale strain fields induced by the L12-Al3Zr phase in Al-Zn-Mg-Cu alloys

被引：0
|
作者：
Hou, Xiaohu [1 ]
Sun, Shuli [1 ]
Bai, Pucun [1 ]
Zhao, Xueping [1 ]
Lang, Fengchao [2 ]
Li, Bo [3 ]
机构：
[1] Inner Mongolia Univ Technol, Coll Mat Sci & Engn, Hohhot, Peoples R China
[2] Inner Mongolia Univ Technol, Coll Sci, Hohhot, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 359卷
基金：
中国国家自然科学基金;
关键词：
Electron microscopy; Aluminum alloys; Microstructure; L12-Al3Zr phase; Strain field; DISPLACEMENT; BEHAVIOR;
D O I：
10.1016/j.matlet.2024.135933
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Al-Zn-Mg-Cu alloys are widely used in aerospace as an advanced lightweight structural material. The precipitation of the nanoscale L12-Al3Zr phase enhances the mechanical properties of the alloy. This study employs scanning transmission electron microscopy and geometric phase analysis techniques to investigate the strain fields induced by the nanoscale L12-Al3Zr phase. The findings demonstrate that after the precipitation of the L12-Al3Zr phase, the strain within the L12-Al3Zr phase is negligible, and a coherent strain field is developed near the L12-Al3Zr/Al interface. Characterizing the coherent strain fields of the nanoscale L12-Al3Zr phase provides a valuable reference for optimizing the mechanical properties of Al alloys.
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页数：4
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