喷射沉积5A06铝合金热压缩变形与致密化规律研究  

Research on Hot Compression and Densifying Law of Spray Deposition 5A06 Aluminum Alloy

作　　者：陈水先[1] 张辉[1] 曾新祥[2] 刘文华 王战锋[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]湘南学院物理系,湖南郴州423000 [3]郴州工业学校,湖南郴州423000

出　　处：《热加工工艺》2008年第8期18-21,共4页Hot Working Technology

基　　金：国家科技部创新基金资助项目(07C26214301749);湖南省自然科学基金资助项目(07JJ5067)

摘　　要：采用Gleeble-1500热模拟机,在变形温度为300～500℃和应变速率为5×10-4～5×10-1s-1的变形条件下,对喷射沉积5A06铝合金进行等温热压缩实验;建立了单轴压缩时相对密度与高向变形量之间的理论关系,并用有限元模拟了单轴热压缩过程。结果表明,随着压下量的增加,材料的相对密度也随之增加;多孔材料压缩变形过程中相对密度理论值、相对密度模拟值和实验结果三者相吻合,互相佐证。The hot compression tests of spray-deposition 5A06 aluninum alloy were performed on Gleeble-1500 machine at temperature of 300-500 ℃ with constant strain of 5×10^-4～5×10^-1s^-1; A theoretic relationship between relative density and high reduction was established in the single axial compress; And the single-axis hot-compression process was simulated using finite element method. The results show that the relative density of material increases with press down amounts increasing; The theory values and the FEM results give a good agreement with the measured values.

关 键 词：喷射沉积 5A06铝合金 热压缩变形 相对密度 有限元分析 

分 类 号：TG146[一般工业技术—材料科学与工程]