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首页> 外文期刊>High temperature materials and processes >Effect of Reheat Treatment on Microstructural Refurbishment and Hardness of the As-cast Inconel 738
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Effect of Reheat Treatment on Microstructural Refurbishment and Hardness of the As-cast Inconel 738

机译：再热处理对Inconel 738铸态组织和硬度的影响

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摘要

This work investigates the effect of rejuvenation heat treatment conditions for refurbishment of the long-term serviced gas turbine blades, which were made of as-cast nickel base superalloy grade, Inconel 738. The reheat treatment conditions consist of solutionizing treatments at temperatures of 1,438, 1,458 and 1,478 K for 14.4 ks and aging treatments at temperatures of 1,133,1,148 and 1,163 K for 43.2, 86.4, 129.6 and 172.8 ks. The results show that increase in aging times results in continuous increase of size and area fraction of gamma prime (γ') particles. The higher solutionizing temperature leads to the lower area fraction and smaller size of gamma prime particles. Regarding the microstructure characteristics, the most proper reheat treatment condition should be solutionizing at temperature of 1,438 K for 14.4 ks and aging at temperature of 1,133 K for 172.8 ks, which provides the highest area fraction of gamma prime particles in proper size.
机译：这项工作研究了翻新热处理条件对翻新的长期维修的燃气轮机叶片的影响，这些叶片由铸态镍基高温合金Inconel 738制成。再热处理条件包括在1,438℃的温度下进行固溶处理， 14.4 ks时为1,458和1,478 K，在43.2、86.4、129.6和172.8 ks时为1,133,1,148和1,163 K时效。结果表明，随着时间的增长，γ′（γ′）粒子的尺寸和面积分数会不断增加。较高的固溶温度导致较低的面积分数和较小的γ′粒子尺寸。关于微观结构特征，最合适的再热处理条件应为：在1438 K的温度下固溶14.4 ks，在1133 K的温度下固溶172.8 ks，这将以适当的尺寸提供最大的gamma初生颗粒面积分数。

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  • 来源
    《High temperature materials and processes》 |2014年第5期|453-461|共9页
  • 作者

    PiyanutWongbunyakul; Patama Visuttipitukkul; Panyawat Wangyao; Gobboon Lothongkum; Prasonk Sricharoenchai;

  • 作者单位

    Innovative Metal Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;

    Innovative Metal Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;

    Innovative Metal Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;

    Innovative Metal Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;

    Innovative Metal Research Unit, Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;

  • 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);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    reheat treatment; microstructure; hardness; refurbishment; Inconel 738;

    机译：再热处理;微观结构硬度;翻新;铬镍铁合金738;

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