邵天巍,郎利辉,赵香妮,等.5A06铝镁合金温热环境变形机理的研究[J].精密成形工程,2019,11(3):104-110.
SHAO Tian-wei,LANG Li-hui,ZHAO Xiang-ni,et al.Deformation Mechanism of 5A06 Aluminum-magnesium Alloy Sheet in Warm Environment[J].Journal of Netshape Forming Engineering,2019,11(3):104-110. |
| 5A06铝镁合金温热环境变形机理的研究 |
| Deformation Mechanism of 5A06 Aluminum-magnesium Alloy Sheet in Warm Environment |
| 投稿时间：2019-04-15 修订日期：2019-05-10 |
| DOI：10.3969/j.issn.1674-6457.2019.03.011 |
| 中文关键词: 铝镁合金 温热成形 本构方程 屈服准则 |
| 英文关键词: Al-Mg alloy sheet warm forming constitutive equation yield criterion |
| 基金项目:国家自然科学基金（10577001） |
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| 摘要点击次数: 3969 |
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| 中文摘要: |
| 目的 获得5A06铝镁合金的本构方程及各向异性指数。方法 在一定温度范围和不同应变速率下进行单向拉伸试验，获得了5A06-O铝镁合金板材不同温度不同应变速率下的真实应力-真实应变曲线及不同方向的厚向异性指数等关键参数，并结合当前关于各向异性屈服准则的研究，通过分析与计算得到了适合于5A06铝镁合金温热成形的Barlat2000各向异性屈服准则。结果 获得了温度范围为150～300 ℃的5A06铝镁合金的本构方程，以及温度范围为20～300 ℃的5A06铝镁合金的各向异性系数α1—α8随温度的变化曲线。结论 获得的5A06铝镁合金的本构方程及各向异性指数较为符合实验结果，可用于该材料温热成形的有限元模拟。 |
| 英文摘要: |
| The paper aims to obtain the constitutive equation and anisotropy index of the 5A06 aluminum-magnesium alloy. The uniaxial tensile tests of aluminum-magnesium alloy sheet 5A06-O were performed at various temperatures and different strain rates respectively. True stress-true strain curves at different temperatures and strain rates and some key parameters such as thickness anisotropy index were obtained. Also, considering the current research on anisotropy yield criterion, Barlat-2000 which was suitable for warm forming of 5A06 aluminum-magnesium alloy was obtained by analysis and calculation. The constitutive equation of 5A06 aluminum-magnesium alloy at various temperatures and the curve of anisotropy coefficients α1—α8 changing with temperature were obtained. The constitutive equation and anisotropy coefficients of 5A06 aluminum-magnesium alloy meet the experimental result and can be used for finite element modeling of warm forming of the material. |
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