摘要
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。
The thermal compression test has been conducted to CuNi10Fe1.6Mn alloy by use of Gleeble-1500 thermal simulation machine.The flow stress behavior during high temperature plastic deformation has been studied.The test temperature is 800~1000℃ while the strain rate is 0.01~10s-1 and the total deformation is 60%.The experimental results show that the flow stress of CuNi10Fe1.6Mn alloy increases with the decrease of strain temperature,but increases with the increase of strain rate.The stress does not change significantly after reaching the peak value,and the steady state rheological state occurs.The thermal deformation activation energy of CuNi10Fe1.6Mn alloy has been calculated by mathematical statistics method to be 306.082KJ/mol,and its constitutive equation has been obtained.
作者
马艳霞
苑伟
梁晨
周铁柱
MA Yanxia;YUAN Wei;LIANG Chen;ZHOU Tiezhu(Luoyang Ship Material Research Institute,Luoyang 471000,Henan China)
出处
《锻压装备与制造技术》
2018年第6期130-133,共4页
China Metalforming Equipment & Manufacturing Technology
关键词
铜镍合金
热压缩实验
流变应力
热变形激活能
Copper-nickel alloy
Hot compression test
Flow stress
Thermal deformation activation energy
