王艳彬,门海豹,陈强,等.MB15-RE 镁合金铸坯在半固态温度下的应力灢应变曲线测试与特征分析[J].精密成形工程,2012,4(3):5-9.
WANG Yan-bin,MEN Hai-bao,CHEN Qiang,et al.Experimental Study and Analysis of Stress-strain Curves for the MB15-RE Magnesium Alloys Casting Billet under the Semisolid Conditions[J].Journal of Netshape Forming Engineering,2012,4(3):5-9. |
| MB15-RE 镁合金铸坯在半固态温度下的应力灢应变曲线测试与特征分析 |
| Experimental Study and Analysis of Stress-strain Curves for the MB15-RE Magnesium Alloys Casting Billet under the Semisolid Conditions |
| 投稿时间：2012-02-06 修订日期：2012-05-10 |
| DOI： |
| 中文关键词: MB15-RE 镁合金 铸坯 半固态 真应力灢真应变曲线 |
| 英文关键词: MB15-RE magnesiu malloy casting billet semisolid the true stress-strain curve |
| 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) |
| 作者 | 单位 | | 王艳彬 | 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 | | 门海豹 | 北方通用动力集团公司,山西 大同 037036 | | 陈强 | 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 | | 吴茜 | 中国兵器工业第五九研究所, 重庆 400039 | | 林军 | 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 | | 朱世凤 | 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 |
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| 中文摘要: |
| 研究了 MB15-RE 镁合金常规铸坯在半固态温度下应力灢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灢应变曲线均可分为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。 |
| 英文摘要: |
| The influence factors on stress-strain curves of the MB15-RE magnesium alloys casting billet under the semi-sol-id 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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