|
| 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 |
| Received:April 15, 2019 Revised:May 10, 2019 |
| 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） |
| Author Name | Affiliation | | SHAO Tian-wei | 1. Technical Center, ACEE Shenyang Liming Aero-engine Co., Ltd., Shenyang 110136, China | | LANG Li-hui | 2. Beihang University, Beijing 100191, China | | ZHAO Xiang-ni | 2. Beihang University, Beijing 100191, China | | SHENG Si-jia | 2. Beihang University, Beijing 100191, China | | ZHANG Yu | 3. Shenyang Aerospace University, Shenyang 110136, China |
|
| Hits: 3728 |
| Download times: 3020 |
| 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. |
|
View Full Text
View/Add Comment Download reader |
| Close |
渝公网安备 50010702501719号