...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Science >Influence of thermal and mechanical surface modifications induced by laser shock processing on the initiation of corrosion pits in 316L stainless steel
【24h】

Influence of thermal and mechanical surface modifications induced by laser shock processing on the initiation of corrosion pits in 316L stainless steel

机译：激光冲击加工引起的热和机械表面改性对316L不锈钢腐蚀坑的产生的影响

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

Pure mechanical and thermo-mechanical laser shock processing treatments have been carried out on an AISI 316L stainless steel. Surface properties, mostly mechanical and metallurgical modifications, were analysed at different scales: a local scale using the nano-indentation technique and AFM analysis, and a more macroscopic scale, using microhardness, optical microscopy and residual stress determinations. After a pure mechanical laser-peening treatment, a significant improvement in the pitting corrosion resistance (+0.1 V) was observed in 0.05 M NaCl. This improvement was attributed to the combined effects of compressive residual stresses and work-hardening, and, in turn, to a mechano-electrochemical phenomenon by which a modification of cathodic reactions occurs during electrochemical tests. For the surface treated by thermo-mechanical laser peening (combination of a surface ablation and shock waves), a tendency for decreasing resistance against pitting corrosion was shown, and attributed to the processing-specific surface texture (ablation craters), which made the material susceptible for the creation of occluded cells.
机译：对AISI 316L不锈钢进行了纯机械和热机械激光冲击处理。表面性能，主要是机械和冶金改性，在不同尺度上进行了分析：使用纳米压痕技术和AFM分析的局部尺度，以及使用显微硬度，光学显微镜和残余应力测定的更宏观尺度。在纯机械激光喷丸处理之后，在0.05 M NaCl中观察到耐点蚀性（+0.1 V）有了显着提高。这种改善归因于压缩残余应力和加工硬化的综合作用，进而归因于机械电化学现象，在电化学测试过程中通过这种现象发生了阴极反应的改变。对于通过热机械激光喷丸处理的表面（表面烧蚀和冲击波的结合），显示出降低的耐点蚀性的趋势，这归因于特定于加工的表面纹理（烧蚀坑），这使材料成为可能容易产生闭塞细胞。

著录项

  • 来源
    《Journal of Materials Science》 |2007年第16期|6866-6877|共12页
  • 作者

    Patrice Peyre; C. Carboni; P. Forget; G. Beranger; C. Lemaitre; D. Stuart;

  • 作者单位

    GERAILP-LALP UPR 1578 CNRS 16bis Avenue Prieur de la Côte d’Or 94114 Arcueil France;

    GERAILP-LALP UPR 1578 CNRS 16bis Avenue Prieur de la Côte d’Or 94114 Arcueil France;

    Cea-Saclay 91191 Gif Sur Yvette France;

    Laboratoire ROBERVAL UTC 60205 Compiegne Cedex France;

    Laboratoire ROBERVAL UTC 60205 Compiegne Cedex France;

    GERAILP-LALP UPR 1578 CNRS 16bis Avenue Prieur de la Côte d’Or 94114 Arcueil France;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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