【摘要】 两相高碳WC－Co硬质合金的断裂韧性K1c（MPa·m1/2）、维氏硬度HV（kg／mm2）和比矫顽磁力Hsc（A·m2／kg）间存在关系：K1c-1=0．1222－69．97HV-1，Hsc=1．155＋［（1897／HV）－3．312］-1。用线弹性断裂力学对上述实验规律进行了验证。控制生产质量中，配合比饱和磁化强度4πσ（A·m2／kg）测定合金的碳含量，利用上述关系式可对WC－Co合金成品的K1c进行无损评估。更多还原

【Abstract】 There are the relationships between the fracture toughness K1c (MPa·m1/2), the Vickers hardness HV(kg/mm2) and the specific coercive force Hsc(A·m2/kg) of two-phase high-carbon WC-Co cemented carbides: K1c-1=0.1222-69. 97HV-1,Hsc =1.155 + [(1897/HV) - 3. 312]-1. Above mentioned experimental regularities have been examined by linear elastic fracture mechanics.In production quality control, the K1c of WC-Co cemented carbides products can be evaluated non-destructively by use of above mentioned relations after determining the carbon content in alloy by specific saturation magnetization 4πσ更多还原