| MB15-RE镁合金铸坯在半固态温度下的应力-应变曲线测试与特征分析 |
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| 引用本文： | 王艳彬,门海豹,陈强,吴茜,林军,朱世凤. MB15-RE镁合金铸坯在半固态温度下的应力-应变曲线测试与特征分析[J]. 金属成形工艺, 2012, 0(3): 5-9 |
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| 作者姓名： | 王艳彬 门海豹 陈强 吴茜 林军 朱世凤 |
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| 作者单位： | [1]国防科技工业精密塑性成形研究应用中心,重庆400039 [2]中国兵器工业第五九研究所,重庆400039 [3]北方通用动力集团公司,山西大同037036 |
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| 基金项目： | 国家自然科学基金项目（51005217）; 中国博士后基金（201004806777）; 重庆博士后基金（渝RC2011013） |
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| 摘 要： | 研究了MB15-RE镁合金常规铸坯在半固态温度下应力-应变曲线变化的影响要素。通过热模拟实验,发现MB15-RE在560℃的半固态温度下应力-应变曲线均可分为3个阶段：应力上升阶段、应力下降阶段和应力稳定阶段;同时在相同应变速率下,合金温度越高,其应力峰值和稳态应力越低,表明曲线与在半固态温度下试样中固液态比例相关;在相同温度下,应变速率越大,峰值应力越大而稳态应力越小,表明了再结晶比例越高,稳态应力越低。
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| 关 键 词： | MB15-RE镁合金 铸坯 半固态 真应力-真应变曲线 |
Experimental Study and Analysis of Stress-strain Curves for the MB15-RE Magnesium Alloys Casting Billet under the Semisolid Conditions |
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| WANG Yan-bin,MEN Hai-bao,CHEN Qiang,WU Qian,LIN Jun,ZHU Shi-feng. Experimental Study and Analysis of Stress-strain Curves for the MB15-RE Magnesium Alloys Casting Billet under the Semisolid Conditions[J]. Metal Forming Technology, 2012, 0(3): 5-9 |
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| Authors: | WANG Yan-bin MEN Hai-bao CHEN Qiang WU Qian LIN Jun ZHU Shi-feng |
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| Affiliation: | 1.National Defence Research and Application Center of Precision Plastic Forming Technology,Chongqing 400039,China;2.No.59 Research Institute Of China Ordnance Industry,Chongqing 400039,China;3.North General Dynamic Group Corporation,Datong 037036,China) |
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| Abstract: | The influence factors on stress-strain curves of the MB15-RE magnesium alloys casting billet under the semi-solid conditions were studied.The results of thermal simulation experiment show,the all stress-strain curves in the semisolid temperature of 560 ℃ can be divided into rise,decline and stabilization stages.And under the constant strain rate,the higher temperature can reduce both the peak and steady-state stresses of MB15-RE,which shows the curves are affected by the ratio of phase of samples.In addition,under the same temperature the higher strain-rate can lead to the greater peak and lower steady-state stresses,which shows the greater ratio of recrystallization can lead to lower stabilization stress. |
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| Keywords: | MB15-RE magnesium alloy casting billet semisolid the true stress-strain curve |
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