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首页> 外文期刊>Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology >Mechanical properties and microstructural response of 2A14 aluminum alloy subjected to multiple laser shock peening impacts
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Mechanical properties and microstructural response of 2A14 aluminum alloy subjected to multiple laser shock peening impacts

机译：多次激光震动撞击撞击2A14铝合金的机械性能和微观结构响应

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摘要

Detailed analysis on mechanical properties and microstructural evolution of 2A14 aluminum alloy subjected to multiple Laser Shock Peening (LSP) impacts has been conducted. The tensile test and in-depth microhardness measurement were utilized in analyzing the mechanical properties, while Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) examinations were also conducted to characterize the micro-structural response. Experimental results demonstrated that the strength and micro-hardness of 2A14 aluminum alloy were improved with increasing the numbers of LSP impacts. After 3 LSP impacts, the tensile strength, and surface micro-hardness reached 525 MPa and 262 HV respectively, which received an increase of 20.69% and 72.37% compared with the untreated sample. And high-density of dislocation structures were also found in surface layer of the specimen subjected to 3 LSP impacts. With regards to the microstructural characteristics of 2A14 aluminum alloy, the enhancement of its mechanical properties was mainly contributed to the beneficial microstructure evolution induced by multiple LSP impacts.
机译：已经进行了多次激光冲击喷枪（LSP）冲击的2A14铝合金的机械性能和微观结构演化的详细分析。利用拉伸试验和深度微硬度测量来分析机械性能，同时还进行扫描电子显微镜（SEM）和透射电子显微镜（TEM）检查以表征微结构响应。实验结果表明，随着LSP撞击的数量增加，改善了2A14铝合金的强度和微硬度。 3 LSP撞击后，拉伸强度和表面微硬度分别达到525MPa和262HV，与未处理的样品相比，增加了20.69％和72.37％。在经过3 LSP撞击的样本的表面层中也发现了脱位结构的高密度。关于2A14铝合金的微观结构特征，其机械性能的增强主要导致多种LSP撞击诱导的有益微观结构演变。

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