Hot Stamping Forming Processes and Experiments of 22MnB5 Ultra-high Strength Steels

被引：0
|
作者：
Xue K. [1 ]
Sun D. [1 ]
Li P. [1 ]
Gong Z. [1 ]
机构：
[1] School of Materials Science and Engineering, Hefei University of Technology, Hefei
来源：
| 1600年 / Chinese Mechanical Engineering Society卷 / 28期
关键词：
22MnB5 ultra-high strength steel; Martensite transformation; Numerical simulation; Springback;
D O I：
10.3969/j.issn.1004-132X.2017.12.017
中图分类号：
学科分类号：
摘要：
Considering the thermal physical property parameters and mechanics performance as the functions of temperature, a thermo-mechanics coupling FEA model of hot stamping processes with 22MnB5 ultra-high strength steel was established using ABAQUS software, and the stress and strain distributions of the blanks during hot stamping forming processes were obtained by the numerical analyses with the appropriate hot stamping processing parameters. The effects of different initial temperatures on the thickness distributions, springbacks and cooling rates of the parts were studied. The hot stamping experiments of 22MnB5 ultra-high strength steel were carried out with initial temperature of 900℃, thickness distributions and springbacks of hot stamping parts show better fitness with the numerical simulation, and the quenched microstructure of each regions is typical acicular martensite. Besides, due to the cooling rate at the bottom of the part is much larger, the martensite microstructure is more uniform and fine. © 2017, China Mechanical Engineering Magazine Office. All right reserved.
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页码：1498 / 1503and1511
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