Uniaxial Ratcheting Behaviors of Metals with Different Crystal Structures or Values of Fault Energy: Macroscopic Experiments

材料科学技术（英文）, 2011, 27(5): 453-459.

^1, , ^2, , ^3, , ^4,

1.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

2.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

3.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

4.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

基金项目: Financial support of the National Natural Science Foundation of China(10772153)

Uniaxial Ratcheting Behaviors of Metals with Different Crystal Structures or Values of Fault Energy: Macroscopic Experiments

Guozheng Kang ^1, , Yujie Liu ^2, , Yawei Dong ^3, , Qing Gao ^4,

1.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

2.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

3.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

4.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China

Keywords： Ratcheting

The uniaxial ratcheting behaviors of several metals with different crystal structures or values of fault energy were observed by the stress-controlled cyclic tests at room temperature. The prescribed metals included 316L stainless steel, pure copper, pure aluminum, and ordinary 20# carbon steel. The effects of applied mean stress,stress amplitude and stress ratio on the uniaxial ratcheting were also investigated. The observations show that different crystal structures or values of fault energy result in more or less different ratcheting behaviors for the prescribed metals. The different ratcheting behaviors are partially caused by the variation of dislocation mobility.

参考文献

[1]	G. Cailletaud;K. Sai .A poly crystalline model for the description of ratchetting: Effect of intergranular and intragranular hardening[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):24-39.
[2]	C. B. Lim;K. S. Kim;J. B. Seong .Ratcheting and fatigue behavior of a copper alloy under uniaxial cyclic loading with mean stress[J].International Journal of Fatigue,2009(3):501-507.
[3]	C. Gaudin;X. Feaugas .Cyclic creep process in AISI 316L stainless steel in terms of dislocation patterns and internal stresses[J].Acta materialia,2004(10):3097-3110.

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Uniaxial Ratcheting Behaviors of Metals with Different Crystal Structures or Values of Fault Energy: Macroscopic Experiments

参考文献