A simple mechanical model to predict fracture and yield strengths of particulate two-phase materials

作者：Li, ZH^*; Schmauder, S; Dong, M

来源：Computational Materials Science, 1999, 15(1): 11-21.

DOI：10.1016/S0927-0256(99)00014-2

• two-phase material
• fracture and yield strengths
• mixture law
• lower and upper bounds

A simple mechanical model is developed and the following basic characteristics of fracture and yield strengths of particulate two-phase materials are predicted based on this model: (1) The rule of mixture can be approximately used in the particulate two-phase materials with fine particles; (2) For a material of a soft (hard) matrix with hard (soft) particles, the mixture law is upper (lower) bound, the lower (upper) bound is dependent on the ratio of strength and volume fraction of the constituent phases; (3) Fine (coarse) size of particle phase increases the strength of the material of a soft (hard) matrix with hard (soft) particles; (4) For mixed microstructure, the real transition of strength during change between soft and hard matrix should vary in a range of the upper bound for the material of a hard matrix with soft particles and the lower bound for that of a soft matrix with hard particles.

• 出版日期1999-5
• 单位上海交通大学