首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Transmission electron microscopy study of dislocation motion in icosahedral Al-Pd-Mn
【24h】

Transmission electron microscopy study of dislocation motion in icosahedral Al-Pd-Mn

机译:二十面体Al-Pd-Mn中位错运动的透射电镜研究

获取原文
获取原文并翻译 | 示例
           

摘要

Perfect and imperfect dislocations trailing phason faults in quasi-crystals are introduced using a simplified two-dimensional aperiodic structure. Then, on the basis of observations of deformed specimens as well as in situ experiments in a transmission electron microscope, the motion of dislocations in icosahedral Al-Pd-Mn is shown to take place exclusively by climb. Under such conditions, the very high brittleness of Al-Pd-Mn at low and medium temperatures is proposed to be a consequence of the difficulty of glide, which itself appears to be an intrinsic property of the quasi-crystalline structure.
机译:使用简化的二维非周期性结构,介绍了准晶体中的完美和不完美的位错拖尾等离子断层。然后,基于变形试样的观察以及在透射电子显微镜中的原位实验,表明二十面体Al-Pd-Mn中的位错运动仅通过爬升发生。在这样的条件下,Al-Pd-Mn在低温和中温下的极高脆性被认为是滑动困难的结果,其本身似乎是准晶体结构的固有性质。

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