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HEAT-RESISTANT MAGNESIUM ALLOY EXCELLENT IN HIGH TEMPERATURE FATIGUE STRENGTH CHARACTERISTIC, METHOD FOR MANUFACTURING THE HEAT-RESISTANT MAGNESIUM ALLOY, AND HEAT-RESISTANT PARTS FOR ENGINE
HEAT-RESISTANT MAGNESIUM ALLOY EXCELLENT IN HIGH TEMPERATURE FATIGUE STRENGTH CHARACTERISTIC, METHOD FOR MANUFACTURING THE HEAT-RESISTANT MAGNESIUM ALLOY, AND HEAT-RESISTANT PARTS FOR ENGINE
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机译：高温疲劳强度特性中的耐热镁合金，制造耐热镁合金的方法以及发动机的耐热零件
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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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