| HMn62-3-3合金的热变形行为及热加工图 |
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| 引用本文： | 胡勇,陈威,李晓诚,彭和思,丁雨田.HMn62-3-3合金的热变形行为及热加工图[J].材料导报,2017,31(16):144-149. |
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| 作者姓名： | 胡勇 陈威 李晓诚 彭和思 丁雨田 |
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| 作者单位： | 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州,730050 |
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| 基金项目： | 甘肃省重大科技专项项目(145RTSA004) |
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| 摘 要： | 通过Gleeble-1500热模拟机在500~600℃、应变速率0.01~10s~(-1)条件下的近等温热模拟压缩试验,建立合金本构方程和热加工图。结果表明:HMn62-3-3合金在热变形过程中发生动态再结晶行为,其峰值应力随变形温度的升高或应变速率的降低而降低;采用Arrhenius方程能够较好地拟合HMn62-3-3合金的流变行为,其热变形激活能为201.525kJ·mol~(-1);根据DMM模型,计算并建立了HMn62-3-3材料的热加工图,由此确定热变形过程中的最佳工艺参数为变形温度610~640℃,应变速率为2~10s~(-1)。
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| 关 键 词： | HMn62-3-3合金 热压缩模拟 本构方程 热加工图 |
Hot Deformation Behavior and Hot Processing Map for HMn62-3-3 Alloy |
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| HU Yong,CHEN Wei,LI Xiaocheng,PENG Hesi and DING Yutian.Hot Deformation Behavior and Hot Processing Map for HMn62-3-3 Alloy[J].Materials Review,2017,31(16):144-149. |
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| Authors: | HU Yong CHEN Wei LI Xiaocheng PENG Hesi and DING Yutian |
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| Affiliation: | State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050 and State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050 |
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| Abstract: | Isothermal compression tests of HMn62-3-3 alloy at temperatures ranging from 560 to 600 ℃ and strain rates from 0.01-10 s-1 were performed on the Gleeble-1500 thermo-simulation machine,the constitutive equation of HMn62-3-3 alloy and hot processing maps during the hot deformation process were established.The results showed that flow stress of HMn62-3-3 alloy decreased with the increase of deformation temperature and the decrease of strain rate.Under the experimental conditions,HMn62-3-3 alloy had the feature of dynamic recrystallization.Arrhenius hyperbolic sine function can well describe the constitutive equation of HMn62-3-3 alloy and the activation energy is about 201.525 kJ·mol-1.Processing maps were established based on the dynamic material model(DMM),the optimum ranges of deformation temperatures and rates are 610-640 ℃ and 2-10 s-1,respectively. |
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| Keywords: | HMn62-3-3 alloy hot compression simulation constitutive equation processing map |
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