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首页> 外文期刊>Materials Science and Engineering >Extraordinary strength and ductility obtained in transformation-induced plasticity steel by slightly modifying its chemical composition
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Extraordinary strength and ductility obtained in transformation-induced plasticity steel by slightly modifying its chemical composition

机译：通过稍微改变其化学成分，在相变诱发塑性钢中获得非凡的强度和延展性

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摘要

Extraordinary mechanical properties were obtained in a low-carbon transformation-induced plasticity (TRIP) steel by modifying its chemical composition and employing thermo-mechanical processing. It was found that Cu addition to the conventional CMnSiAl TRIP steel could improve the thermal stability of high temperature aus-tenite by decreasing the A_(c3) temperature and retarding the bainitic transformation, which led to the formation of retained austenite with higher volume fraction but lower carbon content. The combined effects of high strain hardening due to the TRIP effect, uniform strain distribution, higher volume fraction of thermal martensite, and nano-scale precipitation of ε-Cu particles in the Cu-TRIP steel led to a high strength of 1 GPa and total elongation of approximately 50%. Moreover, a detailed scanning electron microscopy analysis showed that the copper had a noticeable effect on the morphology of the martensite phase created within the microstructure.%TRIP steel; DP steel; Chemical composition; Mechanical properties
机译：在低碳转变诱导塑性（TRIP）钢中，通过改变其化学成分并采用热机械加工，可获得非凡的机械性能。发现在常规CMnSiAl TRIP钢中添加Cu可以通过降低A_（c3）温度并延缓贝氏体转变来提高高温奥氏体的热稳定性，从而导致形成了体积分数更高的残留奥氏体，但较低的碳含量。由于TRIP效应，应变均匀分布，热马氏体的体积分数更高以及Cu-TRIP钢中ε-Cu颗粒的纳米级析出，高应变硬化的综合作用导致了1 GPa和总强度的高强度。伸长率约为50％。此外，详细的扫描电子显微镜分析表明，铜对在显微组织中产生的马氏体相的形态有显着影响。 DP钢化学成分;机械性能

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  • 来源
    《Materials Science and Engineering》 |2017年第15期|225-231|共7页
  • 作者

    N. Saeidi; M. Raeissi; H.R. Vaghei; M.M. Abdar;

  • 作者单位

    Department of Materials Engineering. Isfahan University of Technology, Isfahan 84156-83111, Iran;

    Department of Materials Engineering, Faculty of Engineering, Shahrekord University, Shahrekord 88186-34141, Iran;

    Department of Materials Engineering, Faculty of Engineering, Shahrekord University, Shahrekord 88186-34141, Iran;

    Department of Materials Engineering. Isfahan University of Technology, Isfahan 84156-83111, Iran;

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

    TRIP steel; DP steel; Chemical composition; Mechanical properties;

    机译：TRIP钢;DP钢化学成分;机械性能;

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