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Zhanwei Yuan,Huan Liu,Zhe Ma,Xinkai Ma,Kai Wang,Xuemin Zhang 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.5
In this paper, CoCrFeNiMo0.2particles reinforced titanium matrix composites were prepared by hot pressing sintering in thevacuum, and the volume fraction of CoCrFeNiMo0.2particles was 7%. The microstructure of the composites was analyzed byX-ray diffraction, scanning electron microscope and electron probe, and the micro-mechanical properties of the compositeswere studied by nano indentation technology. Based on the combination of experimental research and numerical simulation,the deformation process and damage behavior of the composites were studied. The tensile strength of the compositeswas 689 MPa, and the strain at break was 12.2%. The damage behavior and stress–strain curve of the composites in thein-situ tensile process were compared with the simulation process to verify the accuracy of the modeling results. Throughthe analysis of the simulation results, it is found that the particles bear a larger load than the matrix during the deformationprocess. When the composites reach the peak stress, the average stress on the particles is about 580 MPa, the average stresson the interface is about 620 MPa, and the average stress on the matrix is about 446 MPa.
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