颗粒增强金属基复合材料强化机制的探讨

A Study of the Strengthening Mechanism of MMCp

通过对Ｓｉｃｐ／ＺＡ２２复合材料断裂过程的ＳＥＭ位观察及应力场的有限元法分析，作者认为，此种复合材料的强化效果是基体合金中的应变强化与应力强化的综合作用而造成的。

With the SEM in situ tensile examination and the FEM analysis of SiCp/ZA22 composite,a new composite strengthening model is proposed, This model can explain U.T.Sincrement of the com-posite and feature of the composite fractography.In this mode,the combination of the stress statestrengthening and strain hardening of the matrix is believed to be the important reason of the compeitestrengthening .