| 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. |
| CUI Lingjiang,WANG Gang,WANG Hongwei,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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| 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. |
| 关键词: AZ80 快速气压胀形 厚度分布 断裂模式 成形性 |
| DOI：10.11951/j.issn.1005-0299.20150316 |
| 分类号:TG306 |
| 基金项目: |
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| Research on quick gas blow forming technology for AZ80 magnesium alloy sheet |
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CUI Lingjiang1,WANG Gang1,WANG Hongwei 2,ZHANG Xiaolei1
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(1.School of Materials Science & Engineering, Harbin Institute of Technology at Weihai, Weihai 264209 China; 2.Dongfeng Nissan Passenger Vehicle Company, Guangzhou 510800 ,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. |
| Key words: AZ80 quick gas blow forming thickness distribution rupture mode formability |
