摘要
以应用广泛的高碳铬轴承钢GCr15为研究对象,探讨深冷处理工艺对高碳铬轴承钢GCr15组织及性能的影响。结果表明:与未经深冷处理的试样相比,经深冷后工件的组织中部分马氏体发生了细化,并且深冷20h的试样与深冷10h的试样相比,马氏体组织进一步细化,白色细小的碳化物颗粒也相应增加。深冷处理可以大幅降低淬火GCr15钢工件中的残余奥氏体含量,显著提高材料硬度以及耐磨性;与常规的热处理工艺相比,深冷处理进一步提高了轴承工件的综合性能。
With wide application of high carbon chromium bearing steel GCr15 as the research object,exploring the effect on the organization performance with cryogenic treatment process of GCr15 steel.Results show that：compared to without cryogenic treated samples by cryogenic workpiece organization martensite refinement,and cryogenic 20 h specimen cryogenic sample 10 h martensite further refinement,corresponding the white fine carbide particles increase.Cryogenic treatment can significantly reduce the residual austenite content of the quenching GCr15 steel workpiece,significantly increase the hardness and wear resistance; compared with the conventional heat treatment process,cryogenic treatment improve the overall performance of the bearing workpiece further.
关键词
GCR15
深冷处理
残余奥氏体
硬度
耐磨性
GCr15
cryogenic treatment
residual austenite
hardness
wear resistance
