Uniaxial Ratcheting Behavior of 7075 Aluminum Alloy

ZHAO Luyuan; HUANG Jun; CHEN Tao; DA Ling; WU Yucheng

doi:10.11973/jxgccl201809005

Materials and Mechanical Engineering > 2018 > 42(9): 21-25. > DOI: 10.11973/jxgccl201809005

ZHAO Luyuan, HUANG Jun, CHEN Tao, DA Ling, WU Yucheng. Uniaxial Ratcheting Behavior of 7075 Aluminum Alloy[J]. Materials and Mechanical Engineering, 2018, 42(9): 21-25. DOI: 10.11973/jxgccl201809005

Citation:

PDF (12621 KB)

Uniaxial Ratcheting Behavior of 7075 Aluminum Alloy

1. Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China;
2. Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui Province, Hefei University of Technology, Hefei 230009, China

More Information

Received Date: April 03, 2017
Revised Date: April 13, 2018

Graphical Abstract

Abstract

Abstract

The ratcheting behavior of 7075 aluminum alloy in the T651 heat treatment state was studied by uniaxial tension-compression cyclic tests under different mean stresses and stress amplitudes. The microstructure of the aluminum alloy before and after tests was observed and analyzed. The results show that the 7075 aluminum alloy presented apparent ratcheting strain accumulation characteristics under different cyclic loads. At the beginning of the cycle, the plastic deformation was obvious and the ratcheting strain rate was high, due to the increase of dislocation density, strengthening of dislocation elastic stress field and appearance of a large amount of dislocation tangle in the aluminum alloy. With the increase of the number of cycles, the plastic deformation accumulation decreased obviously and the ratcheting strain rate increased slowly in a near linear trend. The ratcheting strain accumulation increased with the increase of stress amplitude or mean stress.
- 7075 aluminum alloy,
- ratcheting behavior,
- strain rate,
- dislocation

FullText(HTML)

References (12)

References

[1]	COLAKO U. Kinematic hardening rules for modeling uniaxial and multiaxial ratcheting[J]. Materials & Design, 2008, 29(8):1575-1581.
[2]	康国政, 阚前华. 工程材料的棘轮行为和棘轮-疲劳交互作用[M]. 成都:西南交通大学出版社, 2014.
[3]	LIU W, GAO Z, YUE Z. Steady ratcheting strains accumulation in varying temperature fatigue tests of PMMA[J]. Materials Science & Engineering:A, 2008, 492:102-109.
[4]	KANG G Z, LI Y G, ZHANG J, et al. Uniaxial ratcheting and failure behaviors of two steels[J]. Theoretical & Applied Fracture Mechanics, 2005, 43(2):199-209.
[5]	HASSAN T, KYRIAKIDES S. Ratcheting in cyclic plasticity, part I:Uniaxial behavior[J]. International Journal of Plasticity, 1992, 8(1):91-116.
[6]	PENG J, ZHOU C Y, DAI Q, et al. Fatigue and ratcheting behaviors of CP-Ti at room temperature[J]. Materials Science & Engineering:A, 2014, 590:329-337.
[7]	DUTT A K, RAY K K. Ratcheting phenomenon and post-ratcheting tensile behavior of an aluminum alloy[J]. Materials Science & Engineering:A, 2012, 540:30-37.
[8]	彭金波. 铝合金的棘轮及低周疲劳行为研究[D]. 成都:西南交通大学, 2014.
[9]	KANG G, DONG Y, WANG H, et al. Dislocation evolution in 316L stainless steel subjected to uniaxial ratchetting deformation[J]. Materials Science & Engineering:A, 2010, 527:5952-5961.
[10]	KANG G, LIU Y. Uniaxial ratchetting and low-cycle fatigue failure of the steel with cyclic stabilizing or softening feature[J]. Materials Science & Engineering:A, 2008, 472:258-268.
[11]	陈小敏. AZ91镁合金单轴棘轮效应及低周疲劳行为研究[D]. 长沙:中南大学, 2012.
[12]	YAGUCHI H, MITANI H, NAGANO K, et al. Fatigue-damage evaluation in aluminum heat-transfer tubes by measuring dislocation cell-wall thickness[J]. Materials Science & Engineering:A, 2001, 315:189-194.

Cited By

Get Citation

PDF

XML

Article views (7) PDF downloads (0)

Turn off MathJax

Article Contents

Abstract

References

Uniaxial Ratcheting Behavior of 7075 Aluminum Alloy

Abstract

References

Catalog

Export File

Citation

Format

Content