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在不同工艺参数下进行了SiCP/Al复合材料的等径角挤扭(ECAPT)实验,研究变形温度、变形道次和SiC颗粒质量分数对材料变形过程中致密度的影响。通过光学显微镜观察试样金相组织,结果表明:经ECAPT工艺处理后试样的微观孔洞和团聚等缺陷得到改善,SiC颗粒在铝基体中弥散分布,试样致密度显著提高;不同SiC颗粒配比可影响材料的微观孔洞数量,故为ECAPT工艺影响材料致密度的重要参数。
The isopotential angular squeezing (ECAPT) experiments of SiCP / Al composites under different technological parameters were carried out to study the influence of deformation temperature, deformation pass and SiC particle mass fraction on the densification of the material. The microstructure of the sample was observed by light microscopy. The results showed that the defects such as microscopic pores and agglomeration of the sample after ECAPT treatment were improved. The SiC particles were dispersed in the aluminum matrix and the density of the samples was significantly increased. Than the material can affect the number of micro-holes, so the material density of ECAPT process important parameters.