Molecular dynamics simulation study on microscopic plastic deformation behavior of FCC AlCuMg alloy under laser shock peening

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-09-11 DOI:10.1016/j.vacuum.2025.114737

H.T. Yang , W.N. Lu , J. Li

引用次数: 0

Abstract

The dynamic evolution of microstructures in face-centered cubic AlCuMg alloy undergoing laser shock peening (LSP) was examined using molecular dynamics simulation. The influence of piston velocity on microstructural evolution behavior, phase transition and amorphization degree was analyzed, while the distribution of stress and particle velocity was quantified. Furthermore, the mechanism through which LSP promoted the accumulation of micro-defects, resulting in grain refinement and amorphous structures formation, was elucidated.

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FCC AlCuMg合金激光冲击强化微观塑性变形行为的分子动力学模拟研究

采用分子动力学模拟方法研究了面心立方AlCuMg合金在激光冲击强化（LSP）过程中组织的动态演变。分析了活塞速度对微观组织演化行为、相变和非晶化程度的影响，量化了应力和颗粒速度的分布。进一步阐明了LSP促进微缺陷积累，导致晶粒细化和非晶结构形成的机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.