Transactions of Materials and Heat Treatment

Title：Establishment of sheet forming limit diagram based on elliptical warm hydrobulging test

Authors： Cai Gaoshen Lu Jianjiang Zhou XiaoJun Lang Lihui

Unit： JIE Holding Group Co. Ltd. Zhejiang University Beihang University

KeyWords： warm hydrobulging test forming limit diagram warm/hot hydroforming forming formability

ClassificationCode：TG389

year,vol(issue):pagenumber：2016,41(5):29-32

Abstract：

For the elliptic bulging dies with the long axis diameter Φ100 mm and the short axis diameter of Φ100, Φ90, Φ80, Φ60 and Φ40 mm respectively, the warm/hot sheet hydrobulging tests for aluminum alloy sheets were carried out at the different temperatures 300, 210, 150 ℃, and RT (room temperature) as well as the different pressure rates 0.0045 and 0.045 MPa·s-1. Then bulging samples and basic experimental data were obtained. Furthermore, forming limit curves (FLCS) and forming limit diagrams (FLDS) in tensile stress deformation zone were plotted by applying the calculation formula of ultimate strain to calculate and dispose the above experimental data. Combined with the basic experimental data obtained by uniaxial tensile test under the equivalent condition, a complete sheet metal forming limit diagram (FLD) for aluminium alloy was established.

Funds：

国家重大基础研究项目（613152-06）

蔡高参（1985-），男，博士，工程师

Reference：

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