Synergy effect of Si addition and pre-straining on microstructure and properties of Al-Cu-Mg alloys with a medium Cu/Mg ratio

被引：23
作者：
Li, Jiyu [1 ,3 ]
Chen, Songyi [1 ,2 ,3 ]
Li, Fushan [1 ,3 ]
Chen, Kanghua [1 ,3 ]
Huang, Lanping [3 ]
机构：
[1] Cent S Univ, Light Alloy Res Inst, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, State Key Lab High Performance Complex Mfg, Changsha 410083, Hunan, Peoples R China
[3] Cent S Univ, Collaborat Innovat Ctr Adv Nonferrous Struct Mat, Changsha 410083, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 767卷
关键词：
Al-Cu-Mg alloys; Si; Pre-straining; Microstructure; Properties; MECHANICAL-PROPERTIES; AGING BEHAVIOR; STRENGTHENING MECHANISMS; PRECIPITATION PROCESSES; PLASTIC-DEFORMATION; COLD DEFORMATION; AG; AL-CU-MG-(AG);
D O I：
10.1016/j.msea.2019.138429
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The synergy effect of Si addition and pre-straining prior to artificial aging heat treatment on microstructure and mechanical properties of Al-Cu-Mg alloys with a medium Cu/Mg ratio have been investigated by Vickers hardness, room temperature tensile test combined with X-ray diffraction and transmission electron microscopy characterization. It is indicated that the strength was greatly enhanced via adding Si and introducing prestraining due to the formation finer theta' precipitates. The pre-straining was more effective for Si-free alloys on improving strength compared with Si-containing alloys. The combined mechanism of Si addition and prestraining has been discussed in detail.
引用
收藏
页数：7
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