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首页> 外文期刊>ISIJ international >Effect of Tempering Temperature on the Microstructure and Hardness of a Super-bainitic Steel Containing Co and Al
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Effect of Tempering Temperature on the Microstructure and Hardness of a Super-bainitic Steel Containing Co and Al

机译：回火温度对含Co和Al的超贝氏体钢组织和硬度的影响

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摘要

The effect of tempering temperature, within the range of 400 to 700℃, on the microstructure and hardness of two super-bainitic steels, one as the control parent sample and the other with added Co & Al was investigated. Post-tempering examinations of the super-bainitic samples showed that low temperature tempering cycles (400-500℃) resulted in carbides formation, and some increases in the hardness possibly due to precipitation strengthening in the Co & Al contained steel. Once the tempering temperature increased to 600℃, the hardness plummeted in both steels due to the concurrent coarsening of the bai-nitic ferrite plates and more precipitation of carbides. At the higher tempering temperature of 700℃, further reduction in the hardness occurred because of the accelerated recovery of ferrite and spheroidization of carbides. This work clearly showed that the super-bainitic steel containing Co & Al had a superior tempering resistance particularly at low tempering temperatures (＜500℃) due to reduced carbide precipitation in the presence of Co & Al.
机译：研究了400-700℃回火温度对两种超级贝氏体钢的显微组织和硬度的影响，一种是作为对照母体样品，另一种是添加了Co和Al。对超贝氏体样品进行回火检查后发现，低温回火循环（400-500℃）导致形成碳化物，并且可能由于含Co＆Al的钢中析出强化而使硬度有所提高。回火温度升至600℃后，由于白铁素体铁素体板的同时粗化和碳化物的析出，两种钢的硬度均下降。在700℃的较高回火温度下，由于铁素体的加速回收和碳化物的球化作用，硬度进一步降低。这项工作清楚地表明，含有Co＆Al的超贝氏体钢具有优异的回火抗性，特别是在低回火温度（＜500℃）下，由于Co＆Al的存在减少了碳化物的析出。

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  • 来源
    《ISIJ international》 |2014年第4期|926-931|共6页
  • 作者

    Feng HU; Kaiming WU; Tingping HOU; Amir Abbas SHIRZADI;

  • 作者单位

    Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, 430081 China;

    Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, 430081 China;

    Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, 430081 China;

    Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan, 430081 China,Department of Engineering and Innovation, The Open University, Milton Keynes, MK7 6AA UK,Department of Materials Science and Metallurgy, University of Cambridge,27 Charles Babbage Road, Cambridge, CB3 OFS UK;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tempering; carbide precipitation; retained austenite; bainitic steels;

    机译：回火碳化物沉淀残余奥氏体贝氏体钢;

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