1005 雰囲気温度下における AZ31 マグネシウム合金の圧縮特性に及ぼすひずみ速度の影響

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A commercial AZ31 cast magnesium alloy was tested in compression in the temperature range from 296 K to 723 K and at strain rates of (10)^<-3>S^<-1>, (10)^<-2>S^<-1>, (10)^<-1>S^<-1> and (10)^<-3>S^<-1>. Based on the data obtained at the strain rate range from (10)^<-3>S^<-1> to 10^<-1>S^<-1>, the influence of the elevated temperature and the strain rates on the flow stress at a plastic strain of 0.1 was analyzed using the Zener-Hollomon parameter Z. The measured value of the strain rate sensitivity m varied from 0.11 at 523 K to 0.20 at 723 K. The measured value of the apparent activation energy was 144 kJ/mol.
社団法人日本機械学会の論文