The present work has been carried out to study the different heat-treatment processes to obtain carbide-free bainite in the high silicon spring steel. Silicon content helps to develop carbide-free bainite (compositions of steel is 0.551% C, 1.756% Si, 0.825% Mn, and 0.13% Cr) and also, to avoid carbide precipitation formation during austempering. The desired microstructure of treated samples has been achieved through heat treatment process at different austempering temperatures such as 300 °C, 350 °C, and 400 °C at holding time of 10, 20 and 30 min. Further, the wear rate of the base and treated samples has been analysed through the pin-on-disc testing machine. The retained austenite helps to resist the crack initiation and propagation through transformation during deformation, and it also improves wear resistant and hardness of the treated sample. The effect of fraction of retained austenite and its carbon content on the specific wear rate has been systematically studied. The phase fraction and retained austenite stability have been critically analysed with the help of X-ray diffraction, atomic force microscopy and scanning electron microscopy.

目前的工作已经进行了研究，以研究在高硅弹簧钢中获得无碳化物贝氏体的不同热处理工艺。硅含量有助于形成不含碳化物的贝氏体（钢的成分为0.551％C，1.756％Si，0.825％Mn和0.13％Cr），还可以避免在回火过程中形成碳化物沉淀。通过在不同的回火温度（例如300°C，350°C和400°C）下，在保持时间为10、20和30分钟的条件下进行热处理过程，可以实现所需的处理样品微观结构。此外，基础样品和处理过的样品的磨损率已通过针盘测试机进行了分析。残留的奥氏体有助于抵抗变形过程中通过相变引起的裂纹萌生和扩展，并且还可以提高处理后样品的耐磨性和硬度。已经系统地研究了残余奥氏体的分数及其碳含量对比磨损率的影响。已经借助X射线衍射，原子力显微镜和扫描电子显微镜对相分数和残余奥氏体稳定性进行了严格分析。