Study of Diffusion-Homogenization on SiCp/Al Composites Prepared by Elemental Powder

Yun Xia Liu; Yue Liu; Bao Yong Wang; Hui Xie; Si Da Liu

doi:10.4028/www.scientific.net/AMR.415-417.410

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 415-417Study of Diffusion-Homogenization on SiCp/Al...

Study of Diffusion-Homogenization on SiCp/Al Composites Prepared by Elemental Powder

Abstract:

SiCp/Al composites were prepared by vacuum hot pressing and sintering method. Optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) is applied to study the diffusion-homogenization process of various elements of powder, and the effect of the diffusion-homogenization temperature and holding time on the SiCp/Al Composites’ microstructure in state of vacuum hot pressing. The results show that the Enrichment of Cu-phase is existed in the composites organization which is in the state of vacuum hot pressing; Al₂CuMg fully dissolve into the Al matrix, Cu fully diffused and the diffusion of various elements becomes homogeneous with the temperature increased and time extend. The best processing parameters for the diffusion-homogenization is at 500°Cfor 3h.