...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Structure-mechanical property relationship in a high strength microalloyed steel with low yield ratio: The effect of tempering temperature
【24h】

Structure-mechanical property relationship in a high strength microalloyed steel with low yield ratio: The effect of tempering temperature

机译：低屈服比高强度微合金钢的结构力学性能关系：回火温度的影响

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

We elucidate here the significance of microstructure, in particular, martensite-austenite constituent, in influencing impact toughness and yield-to-tensile strength ratio in a low carbon low-alloyed steel processed via combination of thermo-mechanical controlled processing and tempering. The objective of the study described here is to explore the impact of tempering temperature on the stability of bainite in the attempt to obtain high strength steel with yield strength greater than 600 MPa and yield ratio less than 0.85, together with superior impact toughness. An accompanying objective is to study the striking variation in toughness with tempering temperature, while the strength exhibited insignificant change. The microstructure of the studied steel primarily comprised of fine lath and granular bainite, small fraction of ferrite, together with some martensite-austenite constituent. The morphology of martensite-austenite constituent was granular and stringer-type, and was located between laths or at the bainite/ ferrite boundary. With the increase in tempering temperature, the microstructure became coarse and martensite-austenite constituent was decomposed, leading to decrease in tensile strength and impact toughness, while the yield strength continued to remain stable. High strength, good toughness, and low yield ratio was obtained at lower tempering temperature and is attributed to the fine lath-type microstructure and stable martensite-austenite constituent.
机译：在这里，我们阐明了微结构，特别是马氏体-奥氏体成分，在影响通过热机械控制工艺和回火相结合而加工的低碳低合金钢中的冲击韧性和屈服强度比方面的重要性。本文所述研究的目的是探索回火温度对贝氏体稳定性的影响，以期获得屈服强度大于600 MPa，屈服比小于0.85的高强度钢，并具有优异的冲击韧性。随之而来的目的是研究回火温度下韧性的显着变化，而强度却显示出微不足道的变化。所研究钢的显微组织主要由细板条和贝氏体贝氏体，少量铁素体以及一些马氏体-奥氏体组成。马氏体-奥氏体成分的形态为颗粒状和纵长型，位于板条之间或贝氏体/铁素体边界。随着回火温度的升高，显微组织变粗，马氏体-奥氏体成分分解，导致抗拉强度和冲击韧性降低，而屈服强度继续保持稳定。在较低的回火温度下可获得高强度，良好的韧性和较低的屈服比，这归因于细的板条型组织和稳定的马氏体-奥氏体组成。

著录项

  • 来源
    《Materials Science and Engineering》 |2014年第15期|209-216|共8页
  • 作者

    M.W. Tong; P.K.C. Venkatsurya; W.H. Zhou; R.D.K. Misra; B. Guo; K.G. Zhang; W. Fan;

  • 作者单位

    Laboratory for Excellence in Advanced Steel Research, Center for Structural and Functional Materials, University of Louisiana at Lafayette, LA 70503, USA,Research and Development Center of Wuhan Iron and Steel (Croup) Corporation, Wuhan, Hubei Province 430080, China;

    Laboratory for Excellence in Advanced Steel Research, Center for Structural and Functional Materials, University of Louisiana at Lafayette, LA 70503, USA;

    Laboratory for Excellence in Advanced Steel Research, Center for Structural and Functional Materials, University of Louisiana at Lafayette, LA 70503, USA;

    Laboratory for Excellence in Advanced Steel Research, Center for Structural and Functional Materials, University of Louisiana at Lafayette, LA 70503, USA;

    Research and Development Center of Wuhan Iron and Steel (Croup) Corporation, Wuhan, Hubei Province 430080, China;

    Research and Development Center of Wuhan Iron and Steel (Croup) Corporation, Wuhan, Hubei Province 430080, China;

    Research and Development Center of Wuhan Iron and Steel (Croup) Corporation, Wuhan, Hubei Province 430080, China;

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

    High strength; Low yield ratio; Impact toughness; Microstructure; TMCP; Tempering;

    机译：高强度;良率低;冲击韧性;微观结构TMCP;回火;

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