6061铝合金低温快速流变行为的研究  

High-speed Flow Behavior of 6061 Aluminium Alloy at Low Temperature

作　　者：王孟君[1] 甘春雷[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《金属热处理》2003年第6期16-18,共3页Heat Treatment of Metals

基　　金：教育部华中科技大学塑性成形国家重点实验室访问学者基金

摘　　要：采用圆柱体试样 ,在Gleeble 1 5 0 0型动态热模拟试验机上进行低温快速压缩试验 ,研究了 6 0 6 1铝合金低温下快速变形的流变行为 ,并分析了其变形组织。结果表明 ,6 0 6 1铝合金的流变应力随变形温度升高而降低 ,随应变速率提高而增大 ;在高应变速率下 ,发生了不连续动态再结晶 ;温升强烈地受变形程度的影响 ;The flow behavior of 6061 aluminium alloy is studied by isothermal compression of cylindrical specimens on a Gleeble 1500 thermal mechanical simulator,and Its microstructure is also analyzed.The results show that the flow stress of 6061 alloy decreases with the temperature increasing,while it increases with the strain rate increasing;the discontinuous dynamic recrystallization occurs at high strain rate;the strain has a strong influence on temperature rising;the microstructure of fine grains is obtained during high speed deformation at low temperature.

关 键 词：6061铝合金 低温压缩 流变应力 高应变速率 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG319[金属学及工艺—金属材料]