CuNi10Fe1.6Mn铜镍合金热压缩流变应力行为研究

China Metalforming Equipment & Manufacturing Technology(2018)

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Abstract
利用Gleeble-1500热模拟实验机,对CuNi10Fe1.6Mn合金进行热压缩实验,研究其在高温塑性变形过程中的流变应力行为.试验温度在800~1000℃,应变速率0.01~10s-1,总变形量为60%.实验结果表明:CuNi10Fe1.6Mn合金的流变应力随着应变温度的降低而增加,随着应变速率的增加而增加;应力在达到峰值之后不再发生明显变化,出现稳态流变状态.通过数理统计的方法计算得到CuNi10Fe1.6Mn合金的热变形激活能为306.082kJ/mol,并得到其本构方程.
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