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Development of a precipitation-strengthened Pt-base superalloy

机译:沉淀强化的Pt基高温合金的开发

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摘要

Preliminary work on precipitation-strengthened alloys revealed a Pt-Al-Cr alloy with good mechanical properties and excellent oxidation resistance up to very high temperatures as starting point for further alloy development. A variety of ternary additions to the Pt-Al base are investigated to secure L11 structure of the hardening Pt_3Al phase. Ni is in the course added for solid-solution strengthening. Minor additions of B further increase creep resistance and rupture time remarkably, owing to strengthening of the grain boundaries.
机译:沉淀强化合金的初步工作表明,Pt-Al-Cr合金具有良好的机械性能和优异的抗氧化性,甚至在非常高的温度下仍可作为进一步合金开发的起点。研究了对Pt-Al基的各种三元添加物,以确保硬化Pt_3Al相的L11结构。为了固溶强化而添加Ni。由于强化了晶界,少量添加B进一步提高了抗蠕变性和断裂时间。

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  • 来源
    《Materials Science and Engineering》 |2009年第2009期|328-331|共4页
  • 作者单位

    University Bayreuth, Metals and Alloys, Ludvrig-Thoma-Str. 36b, 95447 Bayreuth, Germany;

    University Bayreuth, Metals and Alloys, Ludvrig-Thoma-Str. 36b, 95447 Bayreuth, Germany;

    University Bayreuth, Metals and Alloys, Ludvrig-Thoma-Str. 36b, 95447 Bayreuth, Germany;

    University of Applied Sciences Jena, Jena, Germany;

    University of Applied Sciences Jena, Jena, Germany;

    National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, lbaraki 305-00047, Japan;

    National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, lbaraki 305-00047, Japan;

    University Bayreuth, Metals and Alloys, Ludvrig-Thoma-Str. 36b, 95447 Bayreuth, Germany;

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

    platinum; superalloy; creep; precipitation; intermetallic;

    机译:铂;高温合金蠕变;沉淀;金属间的;

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