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首页> 外文期刊>Materials & design >Design of wear resistant boron-modified supermartensitic stainless steel by spray forming process
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Design of wear resistant boron-modified supermartensitic stainless steel by spray forming process

机译：喷射成形工艺制备耐磨硼改性超马氏体不锈钢

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摘要

In this paper the chemical composition of the supermartensitic stainless (SM) was modified with the addition of small boron contents (0.3,0.5 and 0.7 wt.%) and processed by spray forming aiming the development of functionalized stainless steel with higher wear resistance. The addition of boron to the SM leads to the formation of continuous network of M_2B type borides uniformly distributed in the refined microstructure promoted by the spray forming process. The wear resistance was evaluated by two different methodologies: (1) the standardized dry sand/rubber wheel test (ASTM G65); and (2) a plate-on-cylinder (POC) wear test which was designed to simulate in laboratorial scale the tribosystems found in wear of risers and casings. It was shown that the wear mechanisms that take place in both tests are quite different, but in all cases increasing the boron content is always accompanied by an increase in the wear resistance. Electrochemical analyses were performed to evaluate the corrosion resistance of the designed alloys. It could be seen that corrosion properties similar to the commercial SM can be achieved in the SM modified with 0.7 wt.% of boron if an over content of chromium is added to the chemical composition.
机译：在本文中，通过添加少量的硼（0.3、0.5和0.7 wt。％）来改性超马氏体不锈钢（SM）的化学成分，并通过喷射成型进行处理，旨在开发具有更高耐磨性的功能化不锈钢。硼向SM中的添加导致形成M_2B型硼化物的连续网络，该网络均匀分布在通过喷雾成型工艺促进的细化微结构中。通过两种不同的方法评估了耐磨性：（1）标准化的干砂/橡胶轮试验（ASTM G65）； （2）缸套（POC）磨损试验，该试验设计用于在实验室规模模拟冒口和套管磨损中发现的摩擦系统。结果表明，两种测试中发生的磨损机理都大不相同，但是在所有情况下，硼含量的增加总是伴随着耐磨性的增加。进行了电化学分析以评估设计合金的耐腐蚀性。可以看出，如果将过量的铬添加到化学组合物中，则在用0.7wt。％的硼改性的SM中可以获得与商业SM相似的腐蚀性能。

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  • 来源
    《Materials & design》 |2015年第15期|214-223|共10页
  • 作者

    G. Zepon; A.R.C. Nascimento; A.H. Kasama; R.P. Nogueira; C.S. Kiminami; W.J. Botta; C. Bolfarini;

  • 作者单位

    Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais, Universidade Federal de Sao Carlos, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP, Brazil;

    Programa de Pos-Graduacao em Ciencia e Engenharia de Materiais, Universidade Federal de Sao Carlos, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP, Brazil;

    Centro de Pesquisa & Desenvolvimento Leopoldo Americo Miguez de Mello (Cenpes), Avenida Horacio Macedo, 950, 21941-915 Rio de Janeiro, RJ, Brazil;

    Univ. Grenoble Alpes, LEPMI, F-38000 Grenoble, France,CNRS, LEPMI, F-38000 Grenoble, France;

    Departamento de Engenharia de Materiais, Universidade Federal de Sao Carlos, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP, Brazil;

    Departamento de Engenharia de Materiais, Universidade Federal de Sao Carlos, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP, Brazil;

    Departamento de Engenharia de Materiais, Universidade Federal de Sao Carlos, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP, Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Spray forming; Supermartensitic stainless steel; Borides; Wear resistance; Corrosion resistance;

    机译：喷涂成型;超马氏体不锈钢;硼化物;耐磨性;耐腐蚀性能;

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