摘要
采用实型铸造法制备了Al_2O_3泡沫陶瓷增强45#钢基复合材料。利用SEM观察复合材料的显微组织和冲击断口形貌,研究了复合材料的硬度和耐磨性。结果表明,复合材料界面结合较好,是典型的机械结合。复合材料的冲击韧性值低于钢基体,而硬度为钢基体的2~3倍;复合材料的相对耐磨性明显高于钢基体,在冲击功为0.5 J和1.0 J时,复合材料的相对耐磨性分别提高了1.41倍和2.33倍。
Alumina foam ceramics reinforced 45# steel matrix composites were fabricated by full mold casting method. The microstructures and impact fracture morphology were analyzed by SEM; the hardness and wear resistance of composites were studied. The results show that the interface cohesion is close, a typical mechanical cohesion between the alumina foam ceramic and the steel matrix. The impact toughness of composites is less than that of steel base; the hardness of composites is about two or three times than that of steel base; the relative wear resistance of the composite was obviously higher than that of the steel base. With the impact energy of 0,5 J and 1.0 J, the relative wear resistance of the composite increased by 1.41 times and 2.33 times, respectively.
作者
李菊
LI Ju(Shandong Jining Technician College, Jining 272000, Shandong, Chin)
出处
《铸造》
CAS
CSCD
北大核心
2017年第2期142-144,149,共4页
Foundry
关键词
泡沫陶瓷
钢基复合材料
组织
性能
foam ceramics
steel matrix composites
microstructure
properties
