Enhanced fatigue performance of aluminum alloy through surface strengthening treatment

被引：13
|
作者：
Liu, Zepeng [1 ]
Zhang, Hongxia [1 ]
Yan, Zhifeng [1 ]
Dong, Peng [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
来源：
MATERIALS LETTERS | 2022年 / 306卷
基金：
中国国家自然科学基金;
关键词：
Surface treatment; Aluminum alloy; Fatigue; Deformation and fracture; 316L STAINLESS-STEEL; GRADIENT;
D O I：
10.1016/j.matlet.2021.130864
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Surface gradient distribution of the grain size was achieved on the 7075-T651 aluminum alloy by means of surface mechanical rolling treatment (SMRT). The tensile properties and fatigue resistance have been improved due to the action of SMRT. After SMRT, fatigue crack initiation mode exhibited the transition from surface to interior as the stress decreases. The mechanism of fatigue strengthening was discussed based on the gradient grain layer generated after SMRT combined with the cyclic deformation behavior and the transition of crack initiation mode.
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页数：4
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