3104铝合金高温塑性变形本构关系研究  

Research on Constitutive Relationship of 3104 Aluminum Alloy During Plastic Deformation in High Temperature

作　　者：黄光杰[1] 朱清洋[1] 黄本多[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]成都电子机械高等专科学校,成都610031

出　　处：《材料导报》2006年第F11期460-462,共3页Materials Reports

摘　　要：在Gleebe-1500热模拟机上,采用高温等温压缩试验研究了3104铝合金在高温压缩变形中的塑性变形本构关系。结果表明,应变速率和变形温度的变化强烈影响合金流变应力的大小,流变应力随变形温度升高而降低,随应变速率提高而增大;可用含Zener-Hollomon参数的本构方程σ=(1/α)×ln{(Z/A)1/n+[(Z/A)2/n+1]1/2}来描述3104铝合金高温压缩变形时的流变应力行为,解得A=202854595.1s-1、n=3.4046、α=0.03886MPa-1。The constitutive relationship of 3104 aluminum alloy during compression deformation in high temperature is studied by isothermal compression test at Gleeble-1500 thermal-mechanical simulator. The results show that the flow stress is controlled by both strain rate and deforming temperature, the flow stress decreases with the increase of deforming temperature , while iereases with the increase of strain rate. The flow stress of 3104 alloy during high temperature deformation can be represented by a constitutive equation（δ= （1/α）×In { （Z/A）^1/n ＋[ （Z/A）^2/n ＋1 ]^1/2 } ） that includes Zener-Hollomon parameter. The calculated results are： A = 202854595. 1s^-1, n=3. 4046, α = 0. 03886MPa^-1.

关 键 词：3104铝合金 塑性变形 本构关系 

分 类 号：TB333[一般工业技术—材料科学与工程]