回火温度对超级贝氏体组织和性能的影响  

Effect of Tempering Temperature on the Microstructure and Mechanical Properties of Bainitic Steel

作　　者：张月[1] 李青春[1] 王珺[1] 常国威[1] 

机构地区：[1]辽宁工业大学材料科学与工程学院,辽宁锦州121001

出　　处：《辽宁工业大学学报（自然科学版）》2017年第3期173-176,共4页Journal of Liaoning University of Technology(Natural Science Edition)

摘　　要：利用金相、扫描电子显微镜(SEM)等实验方法,研究了不同回火温度及不同的碳含量对超级贝氏体钢的显微组织和力学性能的影响。结果表明,在回火处理试验温度范围内,随回火温度的提高,试样的硬度呈现先增加后降低的规律。碳含量增加,超细贝氏体钢的回火稳定性降低。0.6%C、0.8%C、0.9%C贝氏体钢分别在回火温度为550、500℃和450℃时,硬度值开始下降。在相同温度回火处理相同时间,0.9%C贝氏体钢的耐磨性能最优。The effects of different tempering temperature and carbon content on the microstructure and mechanical properties of bainitic steel were investigated by optical microscopy（OM） and transmission electron microscopy（TEM）. The results show that hardness of super bainitic steel in the tempering treatment test temperature range increases first and then decreases with the increase of tempering temperature. Carbon content increasing, tempering stability ultrafine bainitic steel decreases. 0.6% C, 0.8%, 0.9% bainitic steel at tempering temperature of 550 ℃, 500 ℃ and at 450 ℃, the hardness begins to decline. At the same temperature and the same time of tempering, the wear resistance of 0.9% C bainitic steel is optimal.

关 键 词：贝氏体 回火稳定性 残余奥氏体 力学性能 

分 类 号：TG142.2[一般工业技术—材料科学与工程]