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| 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 |
| Received:February 06, 2012 Revised:May 10, 2012 |
| 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) |
| Author Name | Affiliation | | WANG Yan-bin | 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 | | MEN Hai-bao | North General Dynamic Group Corporation, Datong 037036, China | | CHEN Qiang | 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 | | WU Qian | No.59 Research Institute Of China Ordnance Industry, Chongqing 400039, China | | LIN Jun | 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 | | ZHU Shi-feng | 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 |
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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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