• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Microstructural evolution during isothermal aging and strain-induced transformation followed by isothermal aging in Co-Cr-Mo-C alloy: A comparative study
【24h】

Microstructural evolution during isothermal aging and strain-induced transformation followed by isothermal aging in Co-Cr-Mo-C alloy: A comparative study

机译：Co-Cr-Mo-C合金在等温时效和应变诱导相变后等温时效过程中的组织演变：对比研究

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 present study was undertaken to investigate the effects of isothermal aging (at 850 ℃ for 4, 8,16 and 24 h) and strain-induced transformation (engineering strains of 10% and 20%) followed by isothermal aging (at 850 ℃ for 4, 8 and 16h) on the microstructural evolution of a Co-28Cr-5Mo-0.3C alloy. The obtained results showed that isothermal aging at 850 ℃ resulted in the formation of lamellar-type carbides at the grain boundaries. Moreover, X-ray diffraction analysis indicated that isothermal aging of solution treated specimens at 850 ℃ for 24 h did not lead to complete fcc phase transformation to hcp one. In contrast with the isothermally aged specimens, applying plastic deformation to the solutionized samples accelerated the completion and saturation of fcc(metastable)→ hcp transformation after 8 h aging at 850 ℃. In addition, the X-ray diffraction results indicated that implementing isothermal aging of the strain-induced specimens at the higher aging time (16 h) caused the formation of (111)_(fcc) and (200)_(fcc) diffraction peaks again. Also, the strain-induced specimens followed by isothermal aging showed higher amount of microhardness as compared with the other specimens aged solely.
机译：本研究旨在研究等温老化（在850℃下4,8,16和24 h）和应变诱导转变（工程应变为10％和20％）继之以等温老化（在850℃下的温度）的影响。 4、8和16h）对Co-28Cr-5Mo-0.3C合金的组织演变进行了研究。结果表明，在850℃等温时效后，晶界形成了层状碳化物。 X射线衍射分析表明，固溶处理后的试样在850℃下等温老化24 h不会导致fcc完全转变成hcp。与等温老化试样相反，在850℃老化8 h后，对固溶试样施加塑性变形可加速fcc（易变）→hcp转变的完成和饱和。另外，X射线衍射结果表明，在较高的时效时间（16 h）下对应变诱导的样品进行等温时效会导致形成（111）_（fcc）和（200）_（fcc）衍射峰。再次。而且，与仅单独老化的其他样本相比，应变诱导的样本随后进行等温老化显示出更高的显微硬度。

著录项

  • 来源
    《Materials Science and Engineering》 |2010年第17期|P.4082-4091|共10页
  • 作者

    H.R. Lashgari; Sh. Zangeneh; F. Hasanabadi; M. Saghafi;

  • 作者单位

    Center of Excellence for High Performance Materials, School of Metallurgy and Materials, University of Tehran, Tehran, Iran;

    rnCenter of Excellence for High Performance Materials, School of Metallurgy and Materials, University of Tehran, Tehran, Iran;

    rnCenter of Excellence for High Performance Materials, School of Metallurgy and Materials, University of Tehran, Tehran, Iran;

    rnCenter of Excellence for High Performance Materials, School of Metallurgy and Materials, University of Tehran, Tehran, Iran;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Co-28Cr-5Mo-0.3C alloy; isothermal aging; strain-induced transformation;

    机译：Co-28Cr-5Mo-0.3C合金;等温老化应变诱导转化;

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