摘要
采用重力铸造工艺制备了原位自生硅相增强高铝锌基复合材料。应用光学金相显微镜、扫描电子显微镜、拉伸试验等手段研究了复合材料的显微组织、断口形貌特征和力学损伤机理。结果表明:硅相含量越大,抗拉强度越小,复合材料的力学损伤越明显;复合材料的断裂裂纹主要起源于缩孔和疏松处。
The silicon particles reinforced zinc-based composite materials by in situ crystallization technique were fabricated using gravity casting technique.The microstructure,fracture surface and mechanical damage mechanism of composite materials were studied by the metal- lurgical microscope, （SEM） and tensile test.The results show that the tensile strength of composite materials decrease with the increasing of silicon content, mechanical damage of composite materials increase with the increasing of silicon content, and fracture of composite materials mainly originated from shrinkage and loose.
出处
《机械管理开发》
2012年第4期62-63,共2页
Mechanical Management and Development
关键词
原位自生
锌基复合材料
力学损伤
断口形貌
in situ crystallization technique
zinc-based composite materials
mechanical damage
fracture surface
