Effects of Laser Shock Peening on the Mechanical Behaviors and Microstructure of Friction Stir Processed 2A14 Aluminum Alloy
Effects of Laser Shock Peening on the Mechanical Behaviors and Microstructure of Friction Stir Processed 2A14 Aluminum Alloy
复制标题
激光冲击强化对搅拌摩擦加工2A14铝合金力学行为和显微组织的影响
DOI：
10.1007/s11665-020-05298-4
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发表时间：
2020-11
影响因子：
2.3
通讯作者：
Xingcheng Li
中科院分区：
文献类型：
--
作者：
Jian Wang;Dongshuai Zhou;Yalin Lu;Li Xie;Zhihao Bai;Jiangtao Wang;Xingcheng Li
研究了激光冲击强化（LSP）对搅拌摩擦加工（FSPed）2A14铝合金显微组织和力学行为的影响。进行显微硬度和拉伸测量以及磨损测试来分析机械特性的变化。还进行了振动疲劳实验，比较了不同处理的试件的振动疲劳寿命，并通过扫描电镜观察了断口形貌。用电子背散射衍射和透射电子显微镜观察LSP前后的微观结构。分析结果表明LSP显着提高了FSPed试样的力学性能。同时，LSP增加了位错密度，促进了FSPed 2A14铝合金表层第二相的析出，两者的相互作用提高了位错结构的稳定性，有助于力学行为的改善。
The influence of laser shock peening (LSP) on the microstructures and mechanical behaviors of the friction stir processed (FSPed) 2A14 aluminum alloy was investigated. Microhardness and tensile measurements, as well as wear test, were taken to analyze the changes in mechanical characteristics. The vibration fatigue experiments were also conducted, while the vibration fatigue life of the specimens with different treatments was compared and the fracture morphologies were observed by scanning electron microscopy. The microstructures before and after LSP were observed with electron backscattered diffraction and transmission electron microscopy. The analysis results evidenced that LSP significantly improved the mechanical properties of the FSPed specimens. Meanwhile, LSP increased the dislocation density and promoted the precipitation of the second phases on the surface layer of the FSPed 2A14 aluminum alloy, while their interactions improved the stability of the dislocation structures, which contributed to the improvement of the mechanical behaviors.
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DOI：
10.1016/j.msea.2016.12.087
发表时间：
2017-01
影响因子：
6.4
作者：
S. Sinhmar;D. K. Dwivedi
通讯作者：
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影响因子：
8.4
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影响因子：
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通讯作者：
Yuxun Zhang;You-ping Yi;Shi-quan Huang;D. Fei
影响因子：
6.2
作者：
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影响因子：
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作者：
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