ECAPT工艺参数对SiC_P/Al复合材料致密度的影响  

The Effect of ECAPT Process Parameters on Compactness of SiC_P/Al Composites

作　　者：徐杰[1] 李萍[1] 杜勇[1] 董飞[1] 赵宾[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《稀有金属与硬质合金》2016年第1期74-78,共5页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金项目(51175138);教育部新世纪优秀人才支持计划项目(NCET-13-0765)

摘　　要：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。Experiments were carried out of equal channel angular pressing and torsion（ECAPT）of SiCP/Al composites with different process parameters.The effects were studied of deformation temperature,deformation passes and SiC mass fraction on composite compactness during deformation.The microstructure of the sample was observed by optical microscope.The results show that such defects as micropore and aggregation in the sample decreases by ECAPT treatment,SiC particles disperse in aluminum matrix and sample density significantly increases.The ratio of SiC particles affects material micropore amount as an important parameter of ECAPT process to affect material compactness.

关 键 词：SICP/AL复合材料 等径角挤扭(ECAPT) 致密度 工艺参数 变形温度 变形道次 SiC颗粒质量分数 

分 类 号：TB331[一般工业技术—材料科学与工程]