摘要
通过金相组织观察、扫描电镜分析以及高温压缩蠕变试验,研究了往复挤压对Al2O3f/AZ91D复合材料组织和高温蠕变性能的影响。结果表明,Al2O3f/AZ91D复合材料经过两道次的往复挤压后,基体组织显著细化,挤压消除了纤维的偏聚,改善了纤维的分布,但高温蠕变性能显著降低。
The optical microscope,SEM and high temperature compression creep tests were employed to analyze the effect of reciprocating extrusion on microstructure and high temperature creep resistance of Al2O3f /AZ91D composite. The results show that the matrix microstructure of Al2O3f/AZ91D composite was refined,the segregation of fiber was eliminated and the homogeneity of fiber distribution was improved after two passes of reciprocating extrusion,but the creep resistance decreased significantly.
出处
《铸造》
CAS
CSCD
北大核心
2010年第7期670-673,共4页
Foundry
基金
国家自然科学基金重点项目(50834003)
陕西省教育厅科学研究项目(08JK369)
