| AZ80镁合金板材快速气压胀形工艺研究 |
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| 引用本文： | 崔令江,王刚,王宏伟,张晓蕾. AZ80镁合金板材快速气压胀形工艺研究[J]. 材料科学与工艺, 2015, 23(3): 81-84. DOI: 10.11951/j.issn.1005-0299.20150316 |
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| 作者姓名： | 崔令江 王刚 王宏伟 张晓蕾 |
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| 作者单位： | 1. 哈尔滨工业大学 威海 材料科学与工程学院,山东 威海,264209;2. 东风日产乘用车公司,广州,510800 |
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| 摘 要： | 快速气压胀形是一种源自超塑性气压胀形的新成形技术,为获得AZ80镁合金板材的快速气压胀形成形性能,以挤压-冷轧加工的AZ80镁合金板材为研究对象,采用半球件自由胀形实验研究了1.0 mm厚板材在250~400℃和0.4~1.6 MPa下的快速气压胀形能力,分析了半球件和盒形件的壁厚分布规律,并对快速气压胀形过程的断裂模式进行了研究.研究结果表明,AZ80镁合金板材在350℃下具有良好的快速气压胀形能力,在350℃、0.8 MPa下的胀形高度可达38 mm,高径比达到0.95,并得到胀破高度、胀形高度与胀形时间之间的关系.在此基础上,进行了1.2 mm厚板材的盒形件快速气压胀形实验,得到高20 mm的轮廓清晰、表面质量良好的胀形件.
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| 关 键 词： | AZ80 快速气压胀形 厚度分布 断裂模式 成形性 |
| 收稿时间： | 2014-10-30 |
Research on quick gas blow forming technology for AZ80 magnesium alloy sheet |
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| CUI Lingjiang,WANG Gang,WANG Hongwei and ZHANG Xiaolei. Research on quick gas blow forming technology for AZ80 magnesium alloy sheet[J]. Materials Science and Technology, 2015, 23(3): 81-84. DOI: 10.11951/j.issn.1005-0299.20150316 |
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| Authors: | CUI Lingjiang WANG Gang WANG Hongwei ZHANG Xiaolei |
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| Affiliation: | School of Materials Science & Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 China,School of Materials Science & Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 China,Dongfeng Nissan Passenger Vehicle Company, Guangzhou 510800 ,China and School of Materials Science & Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 China |
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| Abstract: | Quick gas blow forming ( QGBF) is a new forming technology derived from super plastic gas blow forming. This paper is to investigate the QGBF formability of 1. 0 mm thick extrude?rolled AZ80 magnesium alloy sheet. The AZ80 magnesium alloy sheet was formed at 250~400 ℃ under 0.4~1.6 MPa to achieve a semi?sphere shape. The experimental results showed that the bulge height of semi?sphere part exceeded 38 mm at 350 ℃ under 0.8 MPa and the ratio of (height/diameter) is up to 0.95, which indicated an excellent QGBF formability. The empirical relationship between bulge height, bulging time and bulge height upon rupture was also obtained on the basis of the experimental data. Finally, a perfect 20 mm high rectangular part with good surface and edge quality was successfully fabricated through a 1. 2 mm thin sheet material by applying the empirical function. |
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| Keywords: | AZ80 quick gas blow forming thickness distribution rupture mode formability |
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