刘莹,王炳德,王忠堂

• 1:东北大学机械工程与自动化学院
• 2:沈阳理工大学材料科学与工程学院

摘要(Abstract)：

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。

关键词(KeyWords)： 镁合金;管材;挤压;组织性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(50834008)

作者(Author): 刘莹,王炳德,王忠堂

DOI: 10.13289/j.issn.1009-6264.2011.05.011

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