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Enhanced mechanical properties in a new Ni-Co base superalloy by controlling microstructures

机译:通过控制微观结构来增强新型Ni-Co基高温合金的机械性能

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摘要

We report the enhanced tensile strength and creep resistance of a new Ni-Co-base superalloy (TMW-2) by increasing the solution temperature from 1100 ℃ to 1140 ℃ The yield strength could be improved by 60 MPa, and a temperature gain in creep resistance of about 15 ℃ could be achieved. The improvements in yield strength and creep resistance are mainly due to the coarsening of grain size, the increasing of the volume fraction of tertiary γ and of the length of annealing twin formed during the heat treatment.
机译:我们报告了通过将固溶温度从1100℃提高到1140℃可以提高新型Ni-Co基高温合金(TMW-2)的拉伸强度和抗蠕变性屈服强度可以提高60 MPa,并且蠕变温度增加可以达到约15℃的电阻。屈服强度和抗蠕变性的提高主要归因于晶粒的粗化,叔γ的体积分数的增加和热处理过程中形成的退火孪晶的长度的增加。

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  • 来源
    《Materials Science and Engineering》 |2011年第17期|p.5465-5469|共5页
  • 作者单位

    Superalloys division. Institute of Metal Research, Shenyang, 110016, China,High Temperature Materials Center, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, 34-0047, Japan;

    High Temperature Materials Center, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, 34-0047, Japan;

    High Temperature Materials Center, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, 34-0047, Japan;

    High Temperature Materials Center, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, 34-0047, Japan;

    High Temperature Materials Center, National Institute for Materials Science, Sengen 1-2-1, Tsukuba, 34-0047, Japan;

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

    ni-co base superalloy; yield strength; creep; tertiary γ; annealing twin;

    机译:镍钴合金;屈服强度;蠕变;三级γ;退火孪晶;

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