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Microstructural study in a Fe-Ni-base superalloy during creep-rupture at intermediate temperature

机译：Fe-Ni基高温合金蠕变断裂过程中的显微组织研究

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摘要

Creep-rupture behavior of a Fe-Ni-base alloy crept under various conditions has been studied using Electron Backscatter Diffraction (EBSD) and Transmission electron microscopy (TEM). The results indicate that grain orientation did not change after the alloy crept at 700 ℃/300 MPa and changed greatly crept at 700 ℃/200 MPa. The recrystallization texture near rupture-fracture surface was observed after the alloy crept at 750 ℃/150 MPa. A better creep performance was found in the samples with the occurrence of grain rotation dependence of the microstructure and the grain store energy.
机译：使用电子背散射衍射（EBSD）和透射电子显微镜（TEM）研究了在各种条件下蠕变的Fe-Ni基合金的蠕变断裂行为。结果表明，合金在700℃/ 300 MPa蠕变后，晶粒取向没有变化，而在700℃/ 200 MPa蠕变时，晶粒取向变化很大。合金在750℃/ 150 MPa蠕变后，在断裂-断裂表面附近观察到了再结晶织构。在样品中发现了更好的蠕变性能，并且出现了微观结构和晶粒储能的晶粒旋转依赖性。

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  • 来源
    《Materials Science and Engineering》 |2015年第15期|15-20|共6页
  • 作者

    Jingbo Yan; Yuefeng Gu; Fei Sun; Yuyama Michinari; Zhihong Zhong; Yong Yuan; Jintao Lu;

  • 作者单位

    High Temperature Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan,Xi'an Thermal Power Research Institute, Xingqing Road 136, Xi'an, Shaanxi 710032, China;

    High Temperature Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    High Temperature Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    High Temperature Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan;

    Departmant of Materials Science and Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;

    Xi'an Thermal Power Research Institute, Xingqing Road 136, Xi'an, Shaanxi 710032, China;

    Xi'an Thermal Power Research Institute, Xingqing Road 136, Xi'an, Shaanxi 710032, China;

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

    Superalloy; Creep; Texture; Grain boundary; Recrystallization;

    机译：高温合金蠕变;质地;晶界;重结晶;

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