• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Deformation-Induced Nanocrystal Formation in Shear Bands of Amorphous Alloys
【24h】

Deformation-Induced Nanocrystal Formation in Shear Bands of Amorphous Alloys

机译：非晶合金剪切带中变形诱导纳米晶的形成

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

AMORPHOUS alloys formed by rapid solidification of a metallic melt are ofconsiderable technological interest as high-strength materials. As they are not in thermodynamic equilibrium, these materials tend to crystallize on heating. A high degree of crystallization leads to embrittlement, but if it can he arrested when the crystallites are of only nanometer dimensions, the resulting amorphous-nanocrystalline composite actually has greater strength than the original amorphous material. There is consequently much interest in understanding the mechanisms of crystallization. Previous studies have suggested that mechanical deformation can induce crystallization . Here we report the direct observation of crystallization within the shear bands of aluminum-based amorphous alloys induced by bending. The crystals are face-centred cubic aluminum, 7-10 am in diameter, and seem to form as a consequence of local atomic rearrangements in regions of high plastic strain. We suggest that mechanical deformation might therefore be used to form high-strength amorphous-nanocrystalline composites.

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