Experimental investigation of limit drawing ratio for AZ31B magnesium alloy sheet in warm stamping

被引：15
|
作者：
Wang, Wurong [1 ,2 ]
Chen, Shichao [1 ]
Tao, Kuangheng [1 ]
Gao, Kaixiang [1 ]
Wei, Xicheng [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Rm 607 Rixin Bldg 149 Yanchang Rd, Shanghai 200272, Peoples R China
[2] Shanghai Univ, State Key Lab Adv Special Steel, Rm 607 Rixin Bldg 149 Yanchang Rd, Shanghai 200272, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2017年 / 92卷 / 1-4期
基金：
中国国家自然科学基金;
关键词：
AZ31B magnesium alloy sheet; High-temperature lubricant; Boron nitride (BN); Limit drawing ratio (LDR); Sheet metal stamping; LUBRICATION; PERFORMANCE; FORMABILITY; ADDITIVES; STEEL; COLD; OIL;
D O I：
10.1007/s00170-017-0196-2
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
As a promising solution to lighter vehicles, warm stamping of magnesium alloy sheet has gained intense attention in automotive industry. Firstly, boron nitride (BN), graphitic (C), molybdenum disulfide (MoS2), and polytetrafluoroethylene (PTFE) were evaluated as high-temperature lubricants for magnesium sheet forming. BN demonstrated the best comprehensive performances for good lubrication effect, load-carrying capacity, and excellent low-cost water washing convenience. Limit drawing ratio (LDR) was then determined for 1.5-mm-thick AZ31B magnesium sheet with and without BN as lubricant, and LDRs of 2.5 and 2.1 were achieved for lubricated and unlubricated situations. It was demonstrated that lubricated LDR of AZ31B magnesium sheet under warm stamping is comparable to most known mild steel sheets. The discussion through lubrication status and sheet thinning investigated the effect of lubricant on the increase of LDR compared with unlubricated case.
引用
收藏
页码：723 / 731
页数：9
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