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首页> 外文学位 >Effects of the laser beam powder welding process on the hardenability of superalloy IN-738LC deposition welds.
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Effects of the laser beam powder welding process on the hardenability of superalloy IN-738LC deposition welds.

机译：激光粉末焊接工艺对高温合金IN-738LC堆焊焊缝淬透性的影响。

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摘要

The repair-welding of superalloy gas turbine parts is presently limited to low stress bearing areas, because their complex metallurgy makes them susceptible to formation of discontinuities and to disruption in the element and phase distribution. To extend repairs to highly stressed areas and increase the recoverability of serviced parts, it would be necessary to ensure that the weld deposit attains the same metallurgical characteristics as the original superalloy component.;This research studied the metallurgical response of the cast nickel-based superalloy IN-738LC to the laser beam powder welding process, by quantifying the discontinuities and analyzing the element distribution and microstructure of the weld deposit and substrate, before and after the hardening heat treatments. It was found that the alloy attains proper size, shape and distribution of the strengthening precipitate phase (
机译：目前，高温合金燃气轮机零件的维修焊接仅限于低应力承受区域，因为它们的复杂冶金学使其易于形成不连续性，并易于破坏元素和相分布。为了将维修范围扩展到高应力区域并提高维修零件的可恢复性，有必要确保焊缝具有与原始高温合金部件相同的冶金特性。;本研究研究了铸造镍基高温合金的冶金响应。 IN-738LC用于激光束粉末焊接工艺，方法是量化淬火热处理前后的不连续性并分析焊缝沉积物和基底的元素分布和微观结构。发现该合金达到了适当的尺寸，形状和分布的强化沉淀相（

著录项

  • 作者

    Garcia Buitrago, Jose Humberto.;

  • 作者单位

    Michigan State University.;

  • 授予单位 Michigan State University.;
  • 学科 Engineering Materials science.;Materials science.
  • 学位 M.S.
  • 年度 1995
  • 页码 126 p.
  • 总页数 126
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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