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Production method of the heatproof magnesium alloy and its heatproof magnesium alloy which are superior in fatigue at elevated temperature strength quality and heatproof part null mass
Production method of the heatproof magnesium alloy and its heatproof magnesium alloy which are superior in fatigue at elevated temperature strength quality and heatproof part null mass
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机译：高温疲劳强度优异且耐热零件零质量的耐热镁合金及其耐热镁合金的制造方法
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摘要
PROBLEM TO BE SOLVED: To provide a heat-resistant magnesium alloy excellent in high temperature fatigue strength characteristics, a method of manufacturing the heat-resistant magnesium alloy and heat-resistant parts for an engine manufactured by using the heat-resistant magnesium alloy.;SOLUTION: The magnesium alloy includes, in mass%, Y of 1.8 to 8% and Sm and/or Nd of 1.4 to 8% in total amounts with the remainder consisting of Mg and inevitable impurities. The mean crystal grain size of the crystal grains of a magnesium alloy structure falls within the range of 10 to 50 μm, and 10 or more pieces of plate-like precipitates each having a major axis of 5 μm or more and an aspect ratio of 10 or more are precipitated in the crystal grains. Further, preferably, Ho of 0.5 to 2% is contained.;COPYRIGHT: (C)2012,JPO&INPIT
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