等温淬火对H13钢组织与性能的影响
摘要
通过OM、TEM、XRD和电子拉力试验机,研究等温淬火对H13钢的显微组织与弯曲性能的影响。结果表明:H13钢经淬火后可以获得合金主要由贝氏体、贝氏体/马氏体、少量的马氏体和残留奥氏体组成的混合组织。在淬火过程中,合金组织中优先析出(Cr,Fe)_(23)C_6和(Cr,Fe)_3C两种类型的碳化物,影响奥氏体的稳定性,转变为贝氏体、贝氏体/马氏体、少量的马氏体。随着淬火时间的延长,合金的弯曲强度和塑性均有所提高,抗弯强度在淬火时间为60min时达到本试验的最大值3286MPa。合金断口由沿晶断裂转变为穿晶解理断裂。
引文
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[3]胡莉巾,詹梅,黄亮,等.采用韧性断裂准则分形旋压径向开裂[J].塑性工程学报,2009,16(3):69-73.
[4]刘宗昌,李雪峰,计云萍,等.珠光体、贝氏体、马氏体等概念的形成和发展[J].金属热处理,2013,38(2):15-20.
[5]陈智娟,苗国民,孙明学.H13合金钢电机转轴断裂失效分析[J].金属热处理,2010,35(6):103-105.
[6]Fei Feng,Shangyu Huang,Zhenghua Meng,et al.Experimental study on tensile property of AZ31B magnesium alloy at different high strain rates and temperatures[J].Materials and Design,2014,57:10-20.
[7]M.EI Mehtedi,F.Musharavati,S.Spigarelli.Modeling of the flow behavior of wrought aluminium alloys at elevated temperatures by a new constitutive equation[J].Materials and Design,2014,54:869-873.
[8]Lehua Qi,Jian Liu,Juntao Guan,et al.Tensile properties and damage behaviors of Csf/Mg composite at elevated temperature and containing a small fraction of liquid[J].Composites Science and Technology,2012,72:1774-1780.
[9]Fei Feng,Shangyu Huang,Zhenghua Meng,et al.Experimental study on tensile property of AZ31B magnesium alloy at different high strain rates and temperatures[J].Materials and Design,2014,57:10-20.
[10]李莉,谢里阳,何雪浤,等.H13钢强度退化规律的试验研究[J].中国机械工程,2009,23:2890-2892.
[11]曾刚,李惠,谢春生.H13钢强韧化工艺研究[J].金属热处理,2010,5(1):58-61.
[12]陶新刚,徐春国.楔横轧韧性损伤模型中Zener-Hollomon参数的确定[J].塑性工程学报,2011,18(1):76-80.