• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Eighth International Fatigue Congress Vol.3, Jun 3-7, 2002, Stockholm, Sweden >INFLUENCE OF THE CRYSTALLINE TEXTURE ON THE FATIGUE DAMAGE
【24h】

INFLUENCE OF THE CRYSTALLINE TEXTURE ON THE FATIGUE DAMAGE

机译：晶体纹理对疲劳损伤的影响

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

Crack initiation in austenitic steel (316L) specimens fatigued at lower deformation amplitudes is dominated by twin boundaries (TBs). For medium plastic strain amplitudes, it is shown here that the propagation of short cracks starting at TBs can be explained when both the surface tractions caused by elastic anisotropy as well as the related slip processes are considered. This conclusion has been obtained from grain orientation measurements along damaged TBs using the EBSD technique in the SEM. The frequency of the damaged TBs strongly depends on the meso-texture given by the distribution of 60° <111> rotation axes of the twins in the pole figure. Specimens which were machined transverse to the rolling direction of the plate show more damaged TBs than those machined parallel. Consequently, the risk of TB cracks can be reduced by favourable alignment of the specimens with respect to the rolling direction.
机译：在较低变形幅度下疲劳的奥氏体钢（316L）试样的裂纹萌生主要由孪晶界（TBs）决定。对于中等塑性应变幅度，此处表明，当考虑到由弹性各向异性引起的表面牵引力以及相关的滑动过程时，就可以解释从TBs开始的短裂纹的传播。该结论是通过使用SEM中的EBSD技术从沿受损TB的晶粒取向测量中获得的。损坏的TB的频率在很大程度上取决于由极坐标图中双胞胎的60°<111>旋转轴的分布给出的细观纹理。横向于板的轧制方向加工的试样比平行加工的试样显示出更多的损坏TB。因此，通过使试样相对于轧制方向良好地对位，能够降低TB裂纹的风险。

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