...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Recovery Processes in the Ferrite Phase in C-Mn Steel
【24h】

Recovery Processes in the Ferrite Phase in C-Mn Steel

机译：碳锰钢中铁素体相的回收过程

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

The static recovery kinetics in ferrite were investigated by means of the stress relaxation technique. Samples were deformed in compression for a variety of temperatures, strains and strain rates. The internal stress was found to decrease as recovery proceeded. In addition for a given relaxation time, the internal stress was found to decrease with increasing temperature. The results were analysed using a model previously proposed in the literature, the main parameters being activation energy and activation volume. At temperatures between 150 and 300 deg C the activation energy for recovery was close to that for dislocation core diffusion, whilst between 450 and 600 deg C it was close to the value for lattice diffusion of alpha-Fe. The activation energy was found not to depend on strain and strain rate. The activation volume for the lower temperature regime was approximately constant whilst for the higher temperature regime it decreased with increasing temperature. The activation volume was found not to depend on strain or strain rate. Analysis of the activation energies and activation volumes suggests that above 450 deg C, the rate controlling recovery mechanism is due to thermally activated glide of jogged screw dislocations, which are decorated with carbon solute atoms.
机译：利用应力松弛技术研究了铁素体中的静态恢复动力学。样品在多种温度，应变和应变速率下压缩变形。发现内部应力随着恢复的进行而降低。另外，对于给定的松弛时间，发现内部应力随温度升高而降低。使用先前在文献中提出的模型来分析结果，主要参数是活化能和活化体积。在150至300摄氏度之间的温度下，用于恢复的活化能接近位错核扩散的活化能，而在450至600摄氏度之间，其活化能接近α-Fe的晶格扩散值。发现活化能不取决于应变和应变速率。较低温度范围的活化体积大致恒定，而较高温度范围的活化体积随温度升高而降低。发现活化体积不取决于应变或应变速率。对活化能和活化量的分析表明，在450摄氏度以上，速率控制回收机制是由于慢速螺杆位错的热活化滑移，其由碳溶质原子修饰。

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