Deformation behaviour of AZ31 magnesium alloy sheet hybrid actuating with Al driver sheet and temperature in magnetic pulse forming

被引：20

作者：

Xu, Junrui ^{[1
,2
,3
]}

Xie, Xueyun ^{[1
]}

Wen, Zhisheng ^{[1
]}

Cui, Junjia ^{[4
]}

Zhang, Xu ^{[5
]}

Zhu, Daibo ^{[1
]}

Liu, Yang ^{[1
]}

机构：

[1] Xiangtan Univ, Minist Educ, Engn Res Ctr Complex Tracks Proc Technol & Equipm, Xiangtan 41105, Peoples R China

[2] Xiangtan Univ, Key Lab Welding Robot & Applicat Technol Hunan Pr, Xiangtan 411105, Peoples R China

[3] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan, Hubei, Peoples R China

[4] Hunan Univ, Coll Mech & Vehicle Engn, State Key Lab Adv Design & Mfg Vehicle Body, Changsha, Hunan, Peoples R China

[5] Hunan Univ, Coll Automot & Mech Engn, Changsha Univ Sci & Technol, Changsha, Hunan, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2019年 / 37卷

基金：

中国国家自然科学基金;

关键词：

Magnetic pulse forming; AZ31; sheet; Driver sheet; Temperature; FORMABILITY; HYPERPLASTICITY; EVOLUTION; WARM;

D O I：

10.1016/j.jmapro.2018.12.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, formability of AZ31 sheet in magnetic pulse forming hybrid actuating with driver sheet and temperature were investigated. The effects of discharge parameters, driver sheet and temperature were investigated on bulging by the experimental analysis. Forming height, thickness of AA1060 driver sheet, forming limit curve (FLC), fracture morphology and microstructure were performed to analyze causes of deformation behaviour for driver sheet and temperature. Analysis of driver sheet and temperature effects reveals that the optimum thickness of the driver sheet and temperature are 1 mm and 200 degrees C, respectively. The FLC results show increased by increasing temperature from 25 degrees C to 200 degrees C, and then decreased by increasing the temperature such as 250 degrees C. Compared with quasi-static forming, the temperature effect for formability is unremarkable in magnetic pulse forming with driver sheet. Demonstrating similar drawability and strechability of AZ31 sheet appeared. Microstructure reveals that high strain rate effect, yield strength decreasing (because of temperature effect) and grain refinement are main reasons to affect the formability of AZ31 sheet in magnetic pulse forming with driver sheet and temperature. However, dynamic recrystallization (DRX) is not observed which is usually accompanied at temperatures higher than 150 degrees C in quasi-static forming.

引用

页码：402 / 412

页数：11

共 32 条

[1] HYPERPLASTICITY - ENHANCED FORMABILITY AT HIGH-RATES [J].