...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Influence of the characteristic of recrystallization grain boundary on the formation of creep cracks in a directionally solidified Ni-base superalloy
【24h】

Influence of the characteristic of recrystallization grain boundary on the formation of creep cracks in a directionally solidified Ni-base superalloy

机译：定向凝固镍基高温合金中再结晶晶界特征对蠕变裂纹形成的影响

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

Creep tests of a directionally solidified (DS) Ni-base superalloy specimens containing local recrystallization (RX) were carried out at 980 ℃/235 MPa and the influence of the characteristic of RX grain boundary on the formation of creep cracks was investigated. The RX grain boundary morphology, misorientation and dislocation pattern at high, low angle and twin boundaries during creep were examined. It was shown that only a few high angle grain boundaries (GBs), but not all of them cracked during creep and even after ruptured. This is associated with the dislocation mobility at GBs or the morphology of GBs. The possibility of crack formation was discussed based on the transmission behavior of dislocations at different GBs.
机译：在980℃/ 235 MPa下对定向凝固的（DS）Ni基高温合金试样进行了蠕变试验，研究了RX晶界特征对蠕变裂纹形成的影响。研究了蠕变过程中高，低角度和孪晶边界处的RX晶界形态，取向和位错模式。结果表明，只有几个大角度晶界（GB），但并不是所有在蠕变过程中甚至破裂后都破裂。这与GBs上的位错迁移率或GBs的形态有关。根据不同GBs位错的传输行为，讨论了裂纹形成的可能性。

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