| AZ61镁合金热压缩流变应力及晶粒尺寸预测 |
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| 引用本文： | 彭 建,潘复生,丁培道,汤爱涛,于 翔.AZ61镁合金热压缩流变应力及晶粒尺寸预测[J].稀有金属材料与工程,2009,38(4):655-658. |
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| 作者姓名： | 彭 建 潘复生 丁培道 汤爱涛 于 翔 |
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| 作者单位： | 1. 重庆大学,重庆,400044;国家镁合金材料工程技术研究中心,重庆,400045
2. 重庆大学,重庆,400044 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家支撑计划，国家自然科学基金 |
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| 摘 要： | 通过在Gleeble-1500D热模拟试验机上对AZ61镁合金进行热模拟试验,获得等温恒速单轴方向热压缩变形过程的流变应力-应变关系曲线.经过分析和计算曲线的特征值,利用线性和非线性数值回归方法建立峰值应力、峰值应变、再结晶晶粒尺寸等特征值与Zener-Hollomon参数即带温度补偿的应变速率因子Z的定量关系.流变应力的预测计算值与实测值误差在10%以内,晶粒尺寸计算值与实测值误差在5%以内.
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| 关 键 词： | 镁合金 热压缩 流变应力 数值模拟 |
| 收稿时间： | 2008/6/25 0:00:00 |
| 修稿时间： | 3/2/2009 12:00:00 AM |
Forecast of Flow Stress and Grain Size of AZ61 Mg Alloy under Hot Compression |
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| Peng Jian,Pan Fusheng,Ding Peidao,Tang Aitao and Yu Xiang.Forecast of Flow Stress and Grain Size of AZ61 Mg Alloy under Hot Compression[J].Rare Metal Materials and Engineering,2009,38(4):655-658. |
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| Authors: | Peng Jian Pan Fusheng Ding Peidao Tang Aitao and Yu Xiang |
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| Affiliation: | 1.Chongqing University;Chongqing 400044;China;2.National Engineering Research Center for Magnesium Alloys;Chongqing 400045;China |
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| Abstract: | The uniaxial isothermal hot compression test of AZ61 magnesium alloy was carried out on Gleeble-1500D thermal-mechanical simulator,the flow stress-strain curves and other information of dynamic recrystallization were investigated by numerical analysis.The relations between Z and other characteristic values of dynamic recrystallization,including peak stress,peak strain and grain size,were developed by regression analysis.The numerical simulation model of flow stress was introduced,its predicted values were p... |
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| Keywords: | magnesium alloy hot compression flow stress numerical simulation |
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