Enhancement of Material Formability in Electrically-assisted Double Sided Incremental Forming (E-DSIF)
Incremental sheet forming (ISF) is a new sheet metal forming process which achieves higher formability,better process flexibility and reduced forming force compared to conventional sheet forming operations due to its characteristic of localized deformation.However,it encounters great challenges in fabricating hard-to-form alloys,such as magnesium and titanium alloys.In this paper,a variant of ISF named electricity-assisted double sided incremental forming (E-DSIF) is introduced to study its capabilities in improving formability of hard-to-form alloys under both cold and warm conditions.Electric heating is utilized to locally heat up blank sheets into desired temperature range.AZ31B magnesium alloy sheets with thickness of 1.4 mm are formed into a funnel shape to describe the material formability under room temperature.In addition,a truncated cone shape with 45°wall angle is utilized to investigate the capabilities of the proposed E-DSIF process.The results demonstrate that E-DSIF is capable to significantly enhance the formability of AZ31B magnesium alloys,but the issue of poor surface finish of the formed components needs to be solved.
double sided incremental forming electric heating magnesium alloy
XU Dongkai CHEN Jun
Research Institute of Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China;State Key Laboratory of Department of Plasticity Technology, Shanghai Jiao Tong University, Shanghai 200030, China
国际会议
成都
英文
565-568
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）