...
首页> 外文期刊>Materials Science and Engineering >Improvement of fatigue property in 7050-T7451 aluminum alloy by laser peening and shot peening
【24h】

Improvement of fatigue property in 7050-T7451 aluminum alloy by laser peening and shot peening

机译:激光喷丸和喷丸改善7050-T7451铝合金的疲劳性能

获取原文
获取原文并翻译 | 示例
           

摘要

The fatigue strength for 1 x 107 cycles of 7050-T7451 aluminum alloy was determined for machined, laser-peened, and shot-peened specimens. Moreover, fatigue lives were compared under the same load conditions. Results show that the laser peening induces a deeper compressive residual stress layer and better surface finish, therefore, it improves fatigue properties more effectively. Fractographic examination and analysis shows that the fatigue cracks initiate in the subsurface layer beneath the compressive residual stress field for laser- and shot-peened specimens, whereas the fatigue cracks form at surface for as-machined ones.
机译:确定了7050-T7451铝合金在1 x 107循环中的疲劳强度,用于机加工,激光喷丸和喷丸处理的样品。此外,比较了相同载荷条件下的疲劳寿命。结果表明,激光喷丸可产生更深的压缩残余应力层并具有更好的表面光洁度,因此可以更有效地改善疲劳性能。断口检查和分析表明,对于激光和喷丸处理的试样,疲劳裂纹始于压缩残余应力场下方的地下层,而对于经机加工的试样,疲劳裂纹在表面形成。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号