• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials at High Temperatures >Microstructure and mechanical properties of the T23 steel after long-term ageing at elevated temperature
【24h】

Microstructure and mechanical properties of the T23 steel after long-term ageing at elevated temperature

机译：T23钢在高温下长期老化后的组织和力学性能

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 paper presents the results of research on the microstructure and mechanical properties of T23 steel after long-term ageing up to 70000 h at the temperature of 550 and 600 degrees C. It has been shown that the main mechanisms of degradation of the T23 steel microstructure were: recovery of the matrix, disintegration of the bainitic microstructure, growth of carbide diameter and precipitation of M6C carbides. These processes were more advanced in the steel aged at higher temperature. The changes in the microstructure resulted in a 10-15% decrease in mechanical properties (YS, TS) and hardness HV10, and a 30-40% decrease in the impact energy kV. A greater fall of impact strength occurred in the steel aged at the lower temperature. This was ascribed to the segregation of phosphorus to grain boundaries, which has a well-known adverse effect on ductility of low-alloy steels.
机译：本文介绍了T23钢在550和600摄氏度的温度下长期老化70000h后的组织和力学性能的研究结果。已经证明了T23钢显微组织降解的主要机制。分别是：基体的回收，贝氏体微观结构的分解，碳化物直径的增长和M6C碳化物的沉淀。这些过程在高温时效钢中更为先进。微观结构的变化导致机械性能（YS，TS）和硬度HV10降低10-15％，冲击能量kV降低30-40％。在较低温度下时效的钢中，冲击强度下降幅度更大。这归因于磷向晶界的偏析，这对低合金钢的延展性具有众所周知的不利影响。

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