TIME-DEPENDENT FATIGUE AND ITS MICROMECHANISM OF SUPERALLOY GH169 UNDER OXIDATION
HE Jinrui;LU Younian;WANG Qingsui;SU Hansheng;ZHANG Xueduo;WU Mingchang;ZHU Qiao Beijing Institute of Aeronautical Materials P. O. No. 81-23;Beiing 100095
Cite this article:
HE Jinrui;LU Younian;WANG Qingsui;SU Hansheng;ZHANG Xueduo;WU Mingchang;ZHU Qiao Beijing Institute of Aeronautical Materials P. O. No. 81-23;Beiing 100095. TIME-DEPENDENT FATIGUE AND ITS MICROMECHANISM OF SUPERALLOY GH169 UNDER OXIDATION. Acta Metall Sin, 1990, 26(2): 64-68.
Abstract The time-dependent fatigue and its micromechanism of superalloyGH169 at 650℃ have been studied. Under the same stress and duration, its cycliclife in Ar is shorter than that in air. The damage mechanism is mainly of the hightemperature oxidation and fatigue interaction. The fracture surface of GH169specimen oxidized at 650℃ in air is covered with a dense and even oxide film,but in Ar, with an uncontinuous oxide particles.
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XIE Wei;XU Zhichao;XIE Xishan;ZHANG Shouhua University of Science and Technology Beijing Shanghai Steel Works No.5 University of Science and Technology BeijingDONG Jianxin.P.O.Box 604;University of Science and Technology Beijing;Beijing 100083. EFFECT OF Mg AND δ-PHASE ON MECHANICAL PROPERTIES OF ALLOY GH169(INCONEL 718)[J]. 金属学报, 1993, 29(6): 22-27.
