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首页> 外文期刊>Materials Science and Engineering >Twinning activities in high-Mn austenitic steels under high-velocity compressive loading
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Twinning activities in high-Mn austenitic steels under high-velocity compressive loading

机译：高速压缩载荷下高锰奥氏体钢的孪生活性

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摘要

High-velocity compression tests were carried out on three different types of high-manganese (Mn) austenitic steels, namely Hadfield, TWIP and XIP steels, with the purpose of favoring twinning over slip. The experiments were conducted at three temperatures: -170 ℃, room temperature and 200 ℃, in order to cover both ductile and brittle deformation ranges. Various mechanisms such as slip, formation of more than one twin variant, nano-twins inside primary twins and voids were activated in Hadfield steel, while the deformation was twin-dominated in TWIP steel at all temperatures, which stems from the increase in stacking fault energy (SFE) due to the higher Mn content. The XIP steel with the highest SFE, on the other hand, deformed mostly by slip at elevated temperatures, even though extensive twin and nano-twin formation was prevalent in the microstructure as the temperature decreased to room temperature, and then to -170 ℃, respectively. The current set of results lay out the roles of temperature, deformation velocity and alloy content on the microstructure evolution of high-Mn steels, which altogether can be tailored to improve the work hardening capacity of this class of materials.
机译：对三种不同类型的高锰（Mn）奥氏体钢（即Hadfield，TWIP和XIP钢）进行了高速压缩试验，目的是促进孪晶而不是滑移。为了涵盖延性和脆性变形范围，在三个温度下进行了实验：-170℃，室温和200℃。哈德菲尔德钢激活了滑移，形成多个孪生变体，一次孪生内部的纳米孪晶和空隙等各种机制，而在所有温度下，TWIP钢的变形均以孪晶为主，这是由于堆垛层错增加所致。由于较高的Mn含量而产生的能量（SFE）。另一方面，具有最高SFE的XIP钢在高温下大多会因滑移而变形，尽管随着温度降低至室温，然后降至-170℃，在组织中普遍存在大量的孪晶和纳米孪晶形成，分别。当前的结果集阐明了温度，变形速度和合金含量对高锰钢组织演变的作用，可以对它们进行定制以提高此类材料的加工硬化能力。

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  • 来源
    《Materials Science and Engineering》 |2015年第11期|104-112|共9页
  • 作者

    B. Gumus; B. Bal; G. Gerstein; D. Canadinc; H.J. Maier; F. Guner; M. Elmadagli;

  • 作者单位

    Koc University, Advanced Materials Group (AMG), Department of Mechanical Engineering, Sariyer, 34450 Istanbul, Turkey;

    Koc University, Advanced Materials Group (AMG), Department of Mechanical Engineering, Sariyer, 34450 Istanbul, Turkey;

    Leibniz Universitaet Hannover, Institut fuer Werkstoffkunde (Materials Science), An der Universitaet 2, 30823 Garbsen, Germany;

    Koc University, Advanced Materials Group (AMG), Department of Mechanical Engineering, Sariyer, 34450 Istanbul, Turkey;

    Leibniz Universitaet Hannover, Institut fuer Werkstoffkunde (Materials Science), An der Universitaet 2, 30823 Garbsen, Germany;

    Roketsan Missiles Industries Inc., Materials & Ballistic Protection Technologies Division, Elmadag, 06780 Ankara, Turkey;

    Roketsan Missiles Industries Inc., Materials & Ballistic Protection Technologies Division, Elmadag, 06780 Ankara, Turkey;

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

    High-manganese austenitic steel; TWIP steel; Slip; Twinning; Microstructure;

    机译：高锰奥氏体钢;TWIP钢;滑;孪生;微观结构;

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