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

被引：28

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

页码：183 / 190

页数：8

共 68 条

[1] Evaluation of microstructure and mechanical properties of Al/Al2O3/SiC hybrid composite fabricated by accumulative roll bonding process
Ahmadi, Azin
Toroghinejad, Mohammad Reza
Najafizadeh, Abbas
[J]. MATERIALS & DESIGN, 2014, 53 : 13 - 19
[2] ASM Handbook Committee, 1998, MET HDB FRACT
[3] Modelling of TWIP effect on work-hardening
Bouaziz, O
Guelton, N
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 319 : 246 - 249
[4] Nanostructured steel with high work-hardening by the exploitation of the thermal stability of mechanically induced twins
Bouaziz, O.
Scott, C. P.
Petitgand, G.
[J]. SCRIPTA MATERIALIA, 2009, 60 (08) : 714 - 716
[5] The influence of temperatures and strain rates on the mechanical behavior of dual phase steel in different conditions
Cao, Yu
Ahlstrom, Johan
Karlsson, Birger
[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2015, 4 (01): : 68 - 74
[6] Deformation twinning in nanocrystalline aluminum
Chen, MW
Ma, E
Hemker, KJ
Sheng, HW
Wang, YM
Cheng, XM
[J]. SCIENCE, 2003, 300 (5623) : 1275 - 1277
[7] Strength and tension/compression asymmetry in nanostructured and ultrafine-grain metals
Cheng, S
Spencer, JA
Milligan, WW
[J]. ACTA MATERIALIA, 2003, 51 (15) : 4505 - 4518
[8] DEFORMATION TWINNING
CHRISTIAN, JW
MAHAJAN, S
[J]. PROGRESS IN MATERIALS SCIENCE, 1995, 39 (1-2) : 1 - 157
[9] Ding K., 2006, LASER SHOCK PEENING
[10] Effect of stacking fault energy on plastic deformation of nanocrystalline face-centered cubic metals
Ebrahimi, F
Ahmed, Z
Li, H
[J]. APPLIED PHYSICS LETTERS, 2004, 85 (17) : 3749 - 3751

← 1 2 3 4 5 6 7 →