退火温度对硬质合金刀具材料耐磨性能的影响  

Effect of Annealing Temperature on Wear Resistance of Cemented Carbide Tool Materials

作　　者：李家伟[1] 

机构地区：[1]武昌工学院机械工程学院,湖北武汉430065

出　　处：《热加工工艺》2016年第22期172-174,178,共4页Hot Working Technology

基　　金：绿色风机制造湖北省协同创新中心课题(2012056);湖北省教育科学十二五规划重点课题(2014A047)

摘　　要：采用不同的温度对含In和Ce的新型硬质合金刀具材料进行了退火处理,并进行了显微组织和不同温度下的耐磨性能测试与分析。结果表明:退火处理有助于减少材料内部孔隙,细化晶粒,提高材料的耐磨性能。随退火温度的提高,材料的耐磨性能先升高后下降。与未退火的材料相比,850℃退火使平均晶粒尺寸减小64%,25、150、500℃磨损体积分别减小67%、70%、76%。含In和Ce的新型硬质合金刀具材料的退火温度优选为850℃。Annealing treatments of new carbide tool materials containing In and Ce were carried out using different annealing temperatures. And the microstructure and wear resistance at different temperatures were tested and analyzed. The results show that the annealing process is helpful to reduce the internal porosity, refine the grain size, and improve the wear resistance of the material. With the increase of annealing temperature, the wear resistance property of the material firstly increases and then decreases. Compared with the materials without annealing, annealing at 850 ℃ can make average grain size of the materials decrease by 64%, and make wear volume at 25, 150 and 500 ℃ decrease by 67%, 70% and 76%, respectively. The optimized annealing temperature of the new type materials is 850℃.

关 键 词：硬质合金 刀具材料 耐磨性能 退火温度 复合添加 

分 类 号：TG146[一般工业技术—材料科学与工程]