摘要
在传统22MnB5成分基础上添加Cr、Mo等化学元素,开发出热冲压专用新钢种22MnMoB材料,并通过金相显微镜、显微硬度计、电子拉伸试验机等设备对22MnMoB材料进行材料性能、材料连续冷却转变曲线(CCT)、热处理工艺性能测试,通过中试线、热冲压模具等设备测试材料的工艺参数、试制热冲压零件并测试零件性能。试制结果显示,新开发的22MnMoB材料具有良好的抗短时高温氧化性能、成形淬火后材料组织细小、强度级别与原有22MnB5相当,但总延伸率大大提高。
Based on the 22MnB5’s composition,new boron steel applied on hot stamping was developed by adding some special chemical elements,such as adding Cr,Mo. Materials properties , materials continuous cooling transformation curves（CCT） and heat-treatment properties of new boron steel were tested by metallographic microscope、micro-hardness and electronic tensile testing machines. Process parameters testing ,parts production and part properties analysis were also finished by the middle production line and some other testing equipments. Tests result show that the new boron steel owned great oxidation resistance properties and fine microstructure,the new boron steel and 22MnB5 materials have the same strength levels,but new boron steel have better elongation than 22MnB5.
出处
《中国工程科学》
北大核心
2014年第1期71-75,共5页
Strategic Study of CAE
基金
国家科技支撑计划(2011BAG03B02)
关键词
热冲压
硼钢
成分
抗氧化
hot stamping
boron steel
composition
oxidation resistance
