热处理对钢结硬质合金TLMW50覆层抗磨性的影响  

Effect of heat treatment on the wear resistance of steel-bonded carbide TLMW50 cladding

作　　者：赵一生[1,2] 高志国[2] 魏世忠[3] 

机构地区：[1]深圳职业技术学院,广东深圳518055 [2]中南大学材料科学与工程学院,长沙410083 [3]河南科技大学材料学院,河南洛阳471003

出　　处：《粉末冶金技术》2010年第4期273-278,共6页Powder Metallurgy Technology

摘　　要：为了提高烧结态钢结硬质合金TLMW 50覆层材料的抗磨性能,进行1050℃和1100℃淬火、150℃～250℃回火热处理。利用SEM和TEM对热处理后的试样覆层组织演变进行分析。通过磨粒磨损试验测试覆层试样的抗磨损性。结果表明:热处理后钢结硬质合金TLMW 50覆层中粘结相组织发生明显转变,由片状珠光体组织转变为针状马氏体。1050℃淬火150℃回火工艺处理后的SBCTC试样的磨损量最少,较其他5种工艺对提高SBCTC抗磨性更优越。The heat treated experiment including quenching at 1050℃ and 1100℃ followed by tempering at 150℃-250℃ was carried out for improving the wear resistance of steel-bonded carbide TLMW50 cladding.The microstructure evolution of the cladding was observed by SEM and TEM.The wear resistance of TLMW50 cladding was evaluated by grain-abrasion test.The results show that the microstructure evolution from the plate-shaped pearlite to needle martensite in TLMW50 cladding is attributed to heat treatment.The process of quenching at 1050℃ followed by tempering at 150℃ is considered as an optimized schedule for improving the wear resistance of steel-bonded carbide TLMW50 cladding.

关 键 词：热处理 钢结硬质合金TLMW50覆层 抗磨性 

分 类 号：TF125.32[冶金工程—粉末冶金]