| 冷却速度对42CrMo4钢组织转变及性能影响 |
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| 引用本文： | 杨伟光,刘年富,宋加兵.冷却速度对42CrMo4钢组织转变及性能影响[J].热处理技术与装备,2021(1). |
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| 作者姓名： | 杨伟光 刘年富 宋加兵 |
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| 作者单位： | 宝钢特钢韶关有限公司;安徽安簧机械股份有限公司 |
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| 摘 要： | 为满足客户对42CrMo4钢组织和硬度的要求,将42CrMo4钢在Gleeble 3800热模拟机进行试验,并结合金相法和硬度法,获得不同等温转变前冷却速度和不同等温温度条件下的组织和维氏硬度。等温转变前冷却速度为1℃/s且等温温度700~650℃,等温转变前冷却速度为3和6℃/s且等温温度700~670℃,获得铁素体+珠光体组织以及理想硬度值220~250 HV1。研究结果为42CrMo4钢为轧制后冷却速度和等温温度工艺制定提供了依据。
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| 关 键 词： | 42CrMo4钢 冷却速度 等温转变 组织 维氏硬度 |
Effect of Cooling Speed on Microstructure and Properties of 42CrMo4 Steel |
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| YANG Wei-guang,LIU Nian-fu,SONG Jia-bing.Effect of Cooling Speed on Microstructure and Properties of 42CrMo4 Steel[J].Heat Treatment Technology and Equipment,2021(1). |
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| Authors: | YANG Wei-guang LIU Nian-fu SONG Jia-bing |
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| Affiliation: | (Baosteel Special Steel Shaoguan Co.,Ltd.,Shaoguan Guangdong 512123,China;Anhui Anhuang Machinery Co.,Ltd.,Anqing Anhui 246005,China) |
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| Abstract: | In order to meet the customer's requirements on the microstructure and hardness of 42CrMo4 steel,the 42CrMo4 steel was tested on Gleeble 3800 thermal simulator,and the microstructure and Vick-ers hardness under different cooling speeds before isothermal transformation and different isothermal tem-perature were obtained by combining the metallographic method and hardness method.The cooling speed before isothermal transformation was 1℃/s and the isothermal temperature was 700℃to 650℃,the cooling speed was 3℃/s and 6℃/s before isothermal transformation and the isothermal temperature was 700℃to 670℃,the microstructure of ferrite+pearlite and ideal hardness value of 220 HV 1 to 250 HV 1 were obtained.The results provide a basis for formulating the cooling speed and isothermal temperatures of 42CrMo4 steel after rolling. |
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| Keywords: | 42CrMo4 steel cooling speed isothermal transformation microstructure vickers hardness |
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