摘要
对经不同深冷处理后的Cr12MoV钢进行了力学性能检测和摩擦磨损试验。试验结果表明,深冷处理可以明显提高Cr12MoV钢的硬度,最高增量达到228 HV0.2。深冷处理可减少Cr12MoV钢的残留奥氏体并提高其耐磨性,经深冷处理3×1 h+180℃×1.5 h回火处理后,耐磨性提高最为显著,其磨损失重率下降37.1%;而残留奥氏体量则由未冷处理的34.36%降至2.58%,降幅达92.5%。
The mechanical properties and wear resistance of Cr12MoV steel with different deep cryogenic treatments（DCT）were investigated.The results show that the hardness of Cr12MoV steel is improved obviously by the deep cryogenic treatment,the highest increment of microhardness reaches 228 HV0.2,and the wear resistance is enhanced too.Tempered at 180 ℃ for 1.5 h after 3 times deep cryogenic treatment for 1 h,the Cr12MoV steel has the best wear resistance,and its rate of wear loss dropped 37.1%.Moreover,the retained austenite content decreases obviously to 2.58% due to the deep cryogenic treatment compared to that of 34.35% before deep cryogenic treatment.The percent reduction of retained austenite is 92.5%.
出处
《金属热处理》
CAS
CSCD
北大核心
2011年第8期38-41,共4页
Heat Treatment of Metals
基金
河南科技大学博士研究启动基金(09001199)
关键词
深冷处理(DCT)
硬度
耐磨性
残留奥氏体
deep cryogenic treatment（DCT）
hardness
wear resistance
retained austenite
