...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Mitigation of Stress Corrosion Cracking Susceptibility of Machined 304L Stainless Steel Through Laser Peening
【24h】

Mitigation of Stress Corrosion Cracking Susceptibility of Machined 304L Stainless Steel Through Laser Peening

机译：通过激光喷丸减轻加工的304L不锈钢的应力腐蚀开裂敏感性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The paper describes an experimental study aimed at suppressing stress corrosion cracking susceptibility of machined 304L stainless steel specimens through laser shock peening. The study also evaluates a new approach of oblique laser shock peening to suppress stress corrosion cracking susceptibility of internal surface of type 304L stainless steel tube. The results of the study, performed with an indigenously developed 2.5 J/7 ns Nd:YAG laser, demonstrated that laser shock peening effectively suppresses chloride stress corrosion cracking susceptibility of machined surface of type 304L stainless steel. In the investigated range of incident laser power density (3.2-6.4 GW/cm(2)), machined specimens peened with power density of 4.5 and 6.4 GW/cm(2) displayed lower stress corrosion cracking susceptibility considerably than those treated with 3.2 and 3.6 GW/cm(2) in boiling magnesium chloride test. Oblique laser shock peening, performed on machined internal surface of a type 304L stainless steel tube (OD = 111 mm; ID = 101 mm), was successful in introducing residual compressive surface stresses which brought about significant suppression of its stress corrosion cracking susceptibility. The technique of oblique laser shock peening, in spite of its inherent limitations on the length of peened region being limited by tube internal diameter and the need for access from both the sides, presents a simplified approach for peening internal surface of small tubular components.
机译：本文描述了一项旨在通过激光冲击喷丸抑制加工的304L不锈钢试样应力腐蚀开裂敏感性的实验研究。该研究还评估了一种倾斜激光冲击喷丸抑制304L型不锈钢管内表面应力腐蚀开裂敏感性的新方法。使用本地开发的2.5 J / 7 ns Nd：YAG激光器进行的研究结果表明，激光冲击喷丸可有效抑制304L不锈钢加工表面的氯化物应力腐蚀开裂敏感性。在研究的入射激光功率密度（3.2-6.4 GW / cm（2））范围内，喷丸处理的功率密度分别为4.5和6.4 GW / cm（2）的试样显示出的应力腐蚀裂纹敏感性比用3.2和6.4处理的试样低得多。在沸腾的氯化镁测试中为3.6 GW / cm（2）。在304L型不锈钢管（外径= 111毫米;内径= 101毫米）的机械加工内表面上进行的斜向激光冲击喷丸处理成功地引入了残余压缩表面应力，从而显着抑制了其应力腐蚀裂纹敏感性。尽管倾斜的激光冲击喷丸技术固有的局限性在于，喷丸区域的长度受到管子内径的限制，并且需要从两侧进入，但该技术还是一种用于喷丸小管状部件内表面的简化方法。

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