...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Incorporating dislocation variables into Mohamed's and Kawasaki-Langdon's deformation mechanism maps containing superplasticity mechanism regimes
【24h】

Incorporating dislocation variables into Mohamed's and Kawasaki-Langdon's deformation mechanism maps containing superplasticity mechanism regimes

机译：将位错变量纳入包含超塑性机理体系的穆罕默德和川崎朗登的变形机理图

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

Deformation mechanism map (DMM) is a useful tool to depict pictorially the deformation mechanisms and to elucidate the nature of material flow in creep and superplasticity. In this paper, the number of dislocations and the dislocation density inside the grain and at the grain boundary were incorporated into Mohamed's and Kawasaki-Langdon's DMMs in an attempt to give their distribution. It is found that in superplasticity or Region Ⅱ regime, whether or not the dislocations exist inside the grain depends on the Burgers vector compensated grain size and the shear modulus compensated stress. In the DMMs, the number of dislocations at the grain boundary is about one fifth as much as that inside the grain. The dislocation forecasts in Coble creep and dislocation creep regimes are consistent with the thoughts of Coble and Weertman mechanisms. A new DMM containing the dislocation density was proposed with Zn-22 wt% Al eutectoid alloy as the subject and its prediction is in good agreement with some of available experimental evidences.
机译：变形机制图（DMM）是一种有用的工具，可以以图形方式描绘变形机制并阐明蠕变和超塑性作用下材料流动的性质。在本文中，将晶内和晶界的位错数量和位错密度纳入了Mohamed和Kawasaki-Langdon的DMM中，试图给出它们的分布。研究发现，在超塑性或Ⅱ区状态下，晶粒内是否存在位错取决于Burgers矢量补偿的晶粒尺寸和剪切模量补偿应力。在数字万用表中，晶界处的位错数量大约是晶粒内位​​错的五分之一。 Coble蠕变和位错蠕变状态下的位错预测与Coble和Weertman机制的思想是一致的。提出了一种新的含有位错密度的数字万用表，其以Zn-22wt％的Al共析合金为研究对象，其预测值与一些现有的实验证据非常吻合。

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