摘要
通过对铸态的金属模挤压铸造SiCP/Al金属基复合材料的物理及机械性能的测试,对基体合金ZL109,ZL109+10%SiCP和ZL109+20%SiCP的研究表明,加入SiCP可使复合材料的热膨胀系数下降,抗拉强度和弹性模量提高;SiCP/ZL109复合材料的耐磨性提高4倍左右.通过对断口与组织的分析表明,SiCP在基体中分布的微观不均匀性及颗粒尺寸太大是造成冲击韧性下降的原因.
Both physical and mechanical tests were carried out to study the deformation behavior of particulate SiC-reinforced AI （ZL109） matrix composites produced by extrusion casting using molten metal stirring method. Extrusion casting ZL109 ＋10%SiCp and ZL109＋20%SiCp composite billets were compared with the conventional ZL109 alloy. The results show that the strength, wear properties and elastic modulus of composites increased by the introduction of reinforcement while the heat expand coefficient decreased. It was found that the distribution and size of the SiCp particulate could markedly affect the tensile strength and impact toughness of the composites.
出处
《广东有色金属学报》
2006年第1期22-26,共5页
Journal of Guangdong Non-Ferrous Metals
