C颗粒对Cp/AZ91D复合材料铸态显微组织的影响  

Effect of C particles on the as-cast microstructure of Cp/AZ91D composites

作　　者：宋文婷 张素卿 刘科高[1] SONG Wen-ting;ZHANG Su-qing;LIU Ke-gao(School of Materials Science and Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Provincial Key Laboratory of High Strength Lightweight Metallic Materials,Institute of Advanced Materials, Qilu University of Technology (Shandong Academy of Sciences),Jinan 250014,China)

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101 [2]齐鲁工业大学(山东省科学院)山东省科学院新材料研究所,山东省轻质高强金属材料重点实验室,山东济南250014

出　　处：《山东科学》2020年第5期57-66,共10页Shandong Science

基　　金：国家自然科学基金青年基金(51804190);山东省自然科学基金(ZR2017LEM001);山东省科学院青年基金(2019QN0022)。

摘　　要：通过复合铸造工艺制备了Cp/AZ91D复合材料,研究了C颗粒含量和保温时间等参数对该复合材料显微组织和力学性能的影响。结果表明,与保温时间相比,Cp的晶粒细化作用更为显著。当添加Cp质量分数为1.5%,保温时间15 min时,Cp/AZ91D复合材料铸锭平均晶粒尺寸由176μm降低至32μm,组织整体细化均匀,增强相C颗粒在复合材料基体中均匀分布,并且硬度值最高,达到89.07 HV。In this study,Cp/AZ91D composites are prepared through the composite casting process,and the influence of the C particle content and holding time on the microstructure and mechanical properties of the composites are studied.Results show that compared with the holding time,the grain refinement effect of Cp is more significant.When the mass fraction of addition Cp is 1.5%and the holding time is 15 min,the average grain size of the ingot cast in Cp/AZ91D composite material decreases from 176 to 32μm,the overall fine and uniform structure enhances the uniform distribution of phase C particles in the composite matrix,and the highest hardness value reaches 89.07 HV.

关 键 词：AZ91D 铸造 复合材料 C颗粒 显微组织 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG249.2[金属学及工艺—金属材料]