...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >Effects of deep cryogenic treatment on microstructure, impact toughness and wear resistance of an AISI D6 tool steel
【24h】

Effects of deep cryogenic treatment on microstructure, impact toughness and wear resistance of an AISI D6 tool steel

机译：深层低温处理对AISI D6工具钢微观结构，冲击韧性和耐磨性的影响

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

Several studies have shown that cryogenic treatments improve many properties of tool steels. Basically the cryogenic treatment reduces the amount of retained austenite and promotes ultrathin carbides precipitation. In this study, samples of AISI D6 were submitted to several heat treatment cycles, aiming to analyze the influence of cryogenic treatment on microstructure, impact toughness and wear resistance. These cycles were quenching and tempering, quenching and tempering followed by deep cryogenic treatment (2 and 24 h) and, finally, quenching and tempering followed by deep cryogenic treatment plus double tempering. By the comparison with other studies and by the application of techniques such as Electron Microscopy, Image Analysis and X-ray Diffraction, it was observed that the hardening step (austenitization time and temperature) plays a fundamental role in the retained austenite level and in the cryogenic treatment results. The thermal cycles act both on the martensite formed directly from the quenching (primary martensite) and on the martensite formed from the retained austenite. It was concluded that cryogenic treatment followed by double tempering produced a reduction in the amount of retained austenite and consequently leads to secondary carbides precipitation. This fact has a marked role on the mechanical properties, keeping the wear values unchanged for the studied conditions.
机译：几项研究表明，低温处理改善了工具钢的许多性能。基本上，低温处理减少了保留的奥氏体的量并促进超薄碳化物沉淀。在该研究中，AISI D6的样品提交到几个热处理循环，旨在分析低温处理对微观结构，冲击韧性和耐磨性的影响。这些循环淬火，淬火和回火，淬火和回火，然后深冷冻处理（2和24小时），最后，淬火和回火，然后深冷处理加上两次回火。通过与其他研究的比较和应用诸如电子显微镜，图像分析和X射线衍射的技术，观察到硬化步骤（奥氏体化时间和温度）在保留的奥氏体水平中起着基本作用和低温治疗结果。热循环在直接由淬火（原发性马氏体）和由保留的奥氏体形成的马氏体上的马氏体上起作用。得出结论，低温处理，然后进行双回火，产生保留奥氏体量的减少，因此导致二次碳化物沉淀。这一事实在机械性能上具有明显的作用，使磨损值保持不变的研究。

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