In this study, the effect of cryogenic treatment on microstructural, mechanical, and tribological properties of AISI L2 steel was investigated. Heat treatment processes conducted were, as directly quenched (C), quenched tempered (CT), and quenched cryogenically treated (CC), and the last group (CCT) was additively tempered. The volume fraction of retained austenite, the percentage of carbide density, hardness, empiric fracture toughness, the coefficient of friction (COF), and adhesive/abrasive wear resistance were determined according to the relevant standards. The retained austenite ratio decreased for the CCT process which also reduced the distance between carbides, and it increased the carbide density. A drastic improvement was observed in the tribological behavior of CC and CCT samples. CCT process increased the operational service life of steel in mold making applications due to high adhesive wear resistance, while the CC process provided the best solution for cold cutting operations due to the highest abrasive wear resistance.

在这项研究中，研究了低温处理对AISI L2钢的组织，力学和摩擦学性能的影响。进行的热处理工艺为直接淬火（C），淬火回火（CT）和淬火的低温处理（CC），最后一组（CCT）被加性回火。根据相关标准确定残留奥氏体的体积分数，硬质合金密度，硬度，经验断裂韧性的百分比，摩擦系数（COF）以及胶粘剂/磨料的耐磨性。对于CCT工艺，残余奥氏体比率降低，这也减小了碳化物之间的距离，并且增加了碳化物密度。观察到CC和CCT样品的摩擦学性能有了显着改善。