Tensile properties and surface nanocrystallization analyses of H62 brass subjected to room-temperature and warm laser shock peening

被引：66
作者：
Lu, J. Z. [1 ]
Duan, H. F. [1 ]
Luo, K. Y. [1 ]
Wu, L. J. [1 ]
Deng, W. W. [1 ]
Cai, J. [1 ]
机构：
[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 698卷
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Laser shock peening; H62; brass; Tensile property; Nanocrystallization; Amorphization; TEM observation; MECHANICAL ATTRITION TREATMENT; MAGNESIUM ALLOY; RESIDUAL-STRESS; TITANIUM-ALLOY; HIGH-STRENGTH; DEFORMATION; DUCTILITY; MICROSTRUCTURE; AMORPHIZATION; EVOLUTION;
D O I：
10.1016/j.jallcom.2016.12.210
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of coverage layer and temperature on the tensile properties and surface microstructure of H62 brass subjected to laser shock peening (LSP) were systematically investigated. Ultimate tensile strength, elongation rate, and in-depth microstructural evolutions of three kinds of LSPed specimens, including LSPed specimens with one coverage layer and three coverage layers at room temperature, and one coverage layer at dynamic strain aging temperature, were subsequently measured and characterized. Special attentions were paid to surface nanocrystallization and amorphization of H62 brass subjected to room-temperature LSP and warm LSP technologies for the first time. The formation mechanisms of surface nanocrystallization and amorphization induced by room-temperature LSP and warm LSP were also discussed and completely revealed, and surface nanocrystallization contributed to the improvement of ultimate tensile strength and elongation rate of H62 brass subjected to LSP. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：633 / 642
页数：10
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