双重复合硬质合金力学性能细观研究  

Study of Mechanical Properties of Double Cemented Tungsten Carbide

作　　者：王旭[1] 孙际辉[1] 余永宁[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料科学与工程学报》2004年第5期729-731,共3页Journal of Materials Science and Engineering

摘　　要：通过纳米压痕实验计算得到双重复合硬质合金的力性参数 ,在此基础上通过有限元法结合弹塑性断裂力学理论计算其断裂韧性和加载应力场分布 ,并加以实验验证。结果表明 :可通过纳米压痕实验与因次分析相结合获取材料细观力学性能参数 ,以此为基础预测其性能。The nanoindentation experiments were carried out to calculate parameters of mechanical property of Double Cemented Tungsten Carbide(DC). Then, combining finite element method with fracture mechanics, the fracture toughness and the stress distribution of DC under loading are calculated. The results were confirmed by experiments. The results show that nanoindentation experiments can be used to measure the parameters of mechanical properties of materials at small scale and then predict the mechanical properties.

关 键 词：硬质合金 因次分析 有限元法 

分 类 号：TF125.31[冶金工程—粉末冶金]