Effect of surface mechanical attrition treatment on high cycle and very high cycle fatigue of a 7075-T6 aluminium alloy

被引:43
作者
Gao, Tao [1 ]
Sun, Zhidan [2 ]
Xue, Hongqian [1 ]
Retraint, Delphine [2 ]
机构
[1] Northwestern Polytech Univ, Sch Mech Engn, Xian 710072, Peoples R China
[2] Univ Technol Troyes, CNRS, ICD, LASMIS,P2MN,FRE2019, Troyes, France
关键词
SMAT; Aluminium alloy; Fatigue strength; Very high cycle fatigue; Crack initiation; CRACK INITIATION; RESIDUAL-STRESS; BEHAVIOR; STEEL; LIFE; MICROSTRUCTURE; PROPAGATION; PERFORMANCE; IMPROVEMENT; INCLUSIONS;
D O I
10.1016/j.ijfatigue.2020.105798
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Effects of surface mechanical attrition treatment (SMAT) on fatigue performance of a 7075-T6 aluminium alloy were studied in high cycle fatigue (HCF) and very high cycle fatigue (VHCF) regimes. Fatigue test results showed that SMAT can improve fatigue strength in HCF regime, but decrease it in VHCF regime. Fracture surface observations indicated that the low SMAT intensity is quite optimal, which can protect the surface from crack initiation. However, increasing SMAT intensity could lead to over-peening by inducing deep impact dimples, micro-cracks at the surface and high tensile residual stresses in the subsurface, which deteriorated fatigue performance in VHCF regime.
引用
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页数:14
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共 55 条
[1]   Statistical analysis of high cycle fatigue life and inclusion size distribution in shot peened 300M steel [J].
Bag, Amrita ;
Delbergue, Dorian ;
Bocher, Philippe ;
Levesque, Martin ;
Brochu, Myriam .
INTERNATIONAL JOURNAL OF FATIGUE, 2019, 118 :126-138
[2]   High- and very high-cycle plain fatigue resistance of shot peened high-strength aluminum alloys: The role of surface morphology [J].
Benedetti, M. ;
Fontanari, V. ;
Bandini, M. ;
Savio, E. .
INTERNATIONAL JOURNAL OF FATIGUE, 2015, 70 :451-462
[3]   Probabilistic analysis of the effect of shot peening on the high and low cycle fatigue behaviors of AA 7050-T7451 [J].
Bianchetti, C. ;
Levesque, M. ;
Brochu, M. .
INTERNATIONAL JOURNAL OF FATIGUE, 2018, 111 :289-298
[4]   Effect of surface mechanical attrition treatment on corrosion fatigue behavior of AZ31B magnesium alloy [J].
Chen, Gang ;
Fu, Yuanjie ;
Cui, Yun ;
Gao, Jianwen ;
Guo, Xiang ;
Gao, Hong ;
Wu, Suzhou ;
Lu, Jian ;
Lin, Qiang ;
Shi, Shouwen .
INTERNATIONAL JOURNAL OF FATIGUE, 2019, 127 :461-469
[5]   Effect of shot peening on fatigue performance of Ti2AlNb intermetallic alloy [J].
Chen, Y. X. ;
Wang, J. C. ;
Gao, Y. K. ;
Feng, A. H. .
INTERNATIONAL JOURNAL OF FATIGUE, 2019, 127 :53-57
[6]   FATIGUE-CRACK INITIATION AND PROPAGATION ON SHOT-PEENED SURFACES IN A316 STAINLESS-STEEL [J].
DELOSRIOS, ER ;
WALLEY, A ;
MILAN, MT ;
HAMMERSLEY, G .
INTERNATIONAL JOURNAL OF FATIGUE, 1995, 17 (07) :493-499
[7]   Incredible improvement in fatigue resistance of friction stir welded 7075-T651 aluminum alloy via surface mechanical rolling treatment [J].
Dong, Peng ;
Liu, Zepeng ;
Zhai, Xin ;
Yan, Zhifeng ;
Wang, Wenxian ;
Liaw, Peter K. .
INTERNATIONAL JOURNAL OF FATIGUE, 2019, 124 :15-25
[8]   Effect of bead characteristics on the fatigue life of shot peened Al 7475-T7351 specimens [J].
Ferreira, N. ;
Jesus, J. S. ;
Ferreira, J. A. M. ;
Capela, C. ;
Costa, J. M. ;
Batista, A. C. .
INTERNATIONAL JOURNAL OF FATIGUE, 2020, 134 (134)
[9]   Fatigue crack growth behaviour in the LCF regime in a shot peened steam turbine blade material [J].
He, B. Y. ;
Soady, K. A. ;
Mellor, B. G. ;
Harrison, Gary ;
Reed, P. A. S. .
INTERNATIONAL JOURNAL OF FATIGUE, 2016, 82 :280-291
[10]   Fatigue crack initiation behaviors throughout friction stir welded joints in AA7075-T6 in ultrasonic fatigue [J].
He, Chao ;
Liu, Yongjie ;
Dong, Jiangfeng ;
Wang, Qingyuan ;
Wagner, Daniele ;
Bathias, Claude .
INTERNATIONAL JOURNAL OF FATIGUE, 2015, 81 :171-178