铝合金小孔件单双面激光冲击强化效果研究

蒋尧; 姜银方; 李振; 余江; 刘秋阁; 钱俊康

doi:10.7510/jgjs.issn.1001-3806.2016.01.020

铝合金小孔件单双面激光冲击强化效果研究

1.
江苏大学机械工程学院, 镇江 212013

作者简介: 蒋尧(1989-),男,硕士研究生,现主要从事激光加工技术的研究。.

通讯作者: 姜银方, yfjiang@mail.ujs.edu.cn ;

基金项目:
国家自然科学基金资助项目(51075193)
中图分类号: TG156.99

Investigation of effect of one-side and two-side laser shock processing on aluminum alloy small-hole specimens

1.
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China

Corresponding author: JIANG Yinfang, yfjiang@mail.ujs.edu.cn ;

CLC number: TG156.99

摘要: 为了研究单双面激光冲击对7050-T7451铝合金小孔件的影响,采用ABAQUS有限元软件分析了单双面强化的残余应力分布,并对比分析了残余应力曲线和单双面强化断口间的对应关系。结果表明,双面强化的残余压应力比单面强化大120MPa,且正反面应力分布更合理;单面强化后疲劳源群位置距强化面达2.54mm,偏离了尺寸中心,而双面强化的疲劳源群大致位于尺寸中心;经单双面激光冲击强化后,试样的疲劳增益分别提高了53.3%和156.2%。该研究对单双面激光冲击强化的参量选择具有一定的指导意义。
- 激光技术 /
- 单双面激光冲击强化 /
- 残余应力 /
- 疲劳裂纹源 /
- 小孔件
Abstract: In order to investigate the effect of one-side and two-side laser shock processing (LSP) on 7050-T7451 aluminum alloy small-hole specimens, the residual compressive stress distribution was analyzed with finite element analysis software ABAQUS and the residual stress curves and fracture morphology were compared. The results show that the residual compressive stress introduced by two-side LSP is 120MPa, larger than that induced by one-side LSP and the front and reserve side stress distribution of two-side LSP is more reasonable. The distance from fatigue source group to treatment side after one-side LSP is 2.54mm and deviates from the dimension centre. Fatigue source group locates in the middle of the thickness after two-side LSP. Fatigue lives increase 53.3% and 156.2% after one-side and two-side LSP respectively. The research shows the guidance to parameter selection of one-side and two-side LSP.
- laser technique /
- one-side and two-side laser shock processing /
- residual stress /
- fatigue crack initiation /
- small-hole specimen

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铝合金小孔件单双面激光冲击强化效果研究

作者简介: 蒋尧(1989-),男,硕士研究生,现主要从事激光加工技术的研究。.

通讯作者: 姜银方, yfjiang@mail.ujs.edu.cn ;

Investigation of effect of one-side and two-side laser shock processing on aluminum alloy small-hole specimens

Corresponding author: JIANG Yinfang, yfjiang@mail.ujs.edu.cn ;

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铝合金小孔件单双面激光冲击强化效果研究

通讯作者: 姜银方, yfjiang@mail.ujs.edu.cn;

作者简介: 蒋尧(1989-),男,硕士研究生,现主要从事激光加工技术的研究。

English Abstract

Investigation of effect of one-side and two-side laser shock processing on aluminum alloy small-hole specimens

Corresponding author: JIANG Yinfang, yfjiang@mail.ujs.edu.cn

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铝合金小孔件单双面激光冲击强化效果研究

作者简介: 蒋尧(1989-),男,硕士研究生,现主要从事激光加工技术的研究。.

通讯作者: 姜银方, yfjiang@mail.ujs.edu.cn ;

Investigation of effect of one-side and two-side laser shock processing on aluminum alloy small-hole specimens

Corresponding author: JIANG Yinfang, yfjiang@mail.ujs.edu.cn ;

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铝合金小孔件单双面激光冲击强化效果研究

通讯作者: 姜银方, yfjiang@mail.ujs.edu.cn;

作者简介: 蒋尧(1989-),男,硕士研究生,现主要从事激光加工技术的研究。

English Abstract

Investigation of effect of one-side and two-side laser shock processing on aluminum alloy small-hole specimens

Corresponding author: JIANG Yinfang, yfjiang@mail.ujs.edu.cn

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目录