High strength and high ductility behavior of 6061-T6 alloy after laser shock processing

被引：27
|
作者：
Irizalp, Simge Gencalp [1 ]
Saklakoglu, Nursen [1 ]
机构：
[1] Celal Bayar Univ, Dept Mech Engn, TR-45140 Muradiye, Manisa, Turkey
来源：
OPTICS AND LASERS IN ENGINEERING | 2016年 / 77卷
关键词：
Laser shock processing; Microstructure; Mechanical properties; STACKING-FAULT ENERGY; SEVERE PLASTIC-DEFORMATION; HIGH-TENSILE DUCTILITY; MECHANICAL-PROPERTIES; NANOCRYSTALLINE STRUCTURE; NANOSTRUCTURED METALS; STEELS; MICROSTRUCTURE; IMPACTS; SURFACE;
D O I：
10.1016/j.optlaseng.2015.08.004
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The plastic deformation behavior of 6061-T6 alloy which was subjected to severe plastic deformation (SPD) at high strain rates during laser shock processing (LSP) was researched. In LSP-treated materials, the near surface microstructural change was examined by TEM and fracture surfaces after tensile testing were examined by SEM. An increase in strength of metallic materials brings about the decrease in ductility. In this study, the results showed that LSP-treated 6061-T6 alloy exhibited both high strength and high ductility. TEM observation showed that stacking fault (SF) ribbon enlarged, deformation twins formed and twin boundary increased in ISP-treated 6061-T6 alloy. This observation was an indication of stacking fault energy (SFE) decrease. Work hardening capability was recovered after LSP impacts. (c) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：183 / 190
页数：8
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