| 挤压变形对镁合金组织与力学性能的影响 |
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| 引用本文： | 刘莹,王炳德,王忠堂.挤压变形对镁合金组织与力学性能的影响[J].材料热处理学报,2011,32(5). |
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| 作者姓名： | 刘莹 王炳德 王忠堂 |
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| 作者单位： | 1. 东北大学机械工程与自动化学院,辽宁,沈阳,110004
2. 沈阳理工大学材料科学与工程学院,辽宁,沈阳,110159 |
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| 基金项目： | 国家自然科学基金重点项目(50834008) |
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| 摘 要： | 研究了镁合金管材挤压成形工艺参数,如坯料温度、模具温度、润滑、挤压比、挤压速度等对镁合金管材挤压后组织与力学性能的影响,以及镁合金管材挤压成形后高温性能、室温性能和超塑性性能。结果表明:镁合金挤压管材的室温力学性能为屈服极限190 MPa,拉伸强度280 MPa,伸长率17%;镁合金挤压管材在400℃高温时的力学性能为屈服极限、拉伸强度值接近25MPa,伸长率180%;随着变形程度的增大,力学性能指标随之增大,并分析了镁合金管材挤压后组织状态的变化。
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| 关 键 词： | 镁合金 管材 挤压 组织性能 |
Influence of extrusion deformation on microstructure and mechanical properties of magnesium alloy |
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| LIU Ying,WANG Bing-de,WANG Zhong-tang.Influence of extrusion deformation on microstructure and mechanical properties of magnesium alloy[J].Transactions of Materials and Heat Treatment,2011,32(5). |
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| Authors: | LIU Ying WANG Bing-de WANG Zhong-tang |
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| Affiliation: | LIU Ying1,WANG Bing-de1,WANG Zhong-tang2(1.School of Mechanical Engineering and Automation,Northeasten University,Shenyang 110004,China,2.School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China) |
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| Abstract: | Influence of extrusion process parameters,such as blank and die temperature,lubricant,extrusion ratio and extrusion speed on microstructure and mechanical properties of magnesium alloy was studied.Mechanical performance of extruded magnesium alloy tube at high temperature and room temperature and its superplasticity were analyzed.Experimental results show that yield strength,tensile strength and elongation of the magnesium alloy tube at room temperature are 190 MPa,280 MPa and 17%,respectively.At temperatur... |
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| Keywords: | Mg alloy tube extrusion microstructure and property |
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