基于最大m值法的商用5083铝合金材料性能测试  

Material Performance Testing of Commercial 5083 Aluminum Alloy Based on Maximum m Value Method

作　　者：徐雪峰[1] 李娟[2] 张杰刚[3] 赵爽 王高潮[1] 

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063 [2]北京航空材料研究院,北京100095 [3]首都航天机械公司,北京100076 [4]中航工业洪都航空工业集团公司,江西南昌330024

出　　处：《热加工工艺》2013年第10期71-73,78,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51075196)

摘　　要：采用最大m值法在450、475、500℃下测试商用AA5083合金材料性能,并与恒速度、恒应变速率法拉伸试验结果进行了对比分析。结果表明:该商用AA5083铝合金塑性较差,在450、475、500℃下恒应变速率、恒速度拉伸,伸长率普遍小于100%,超塑性不明显。采用最大m值法测试材料性能,其在450、475、500℃下伸长率分别为105%、107%、154%,但超塑性依然不明显。随着变形程度增大与温度的升高,该商用铝合金原始的长条状组织不断开始断裂并趋于变短,最后变成等轴组织。The maximum m value method was used to test the performance of commercial AA5083 alloy material at 450 ℃, 475 ℃ and 500 ℃, and the above results were compared with constant speed, constant strain rate method tensile test results. The results show that： the commercial 5083 aluminum alloy shows poor plastic. The elongation obtained by constant strain rate and constant speed at 450 ℃, 475 ℃ and500 ℃ are generally less than 100% and the superplasticity is not obvious. The elongation obtained by the maximum m value method test at 450 ℃, 475 ℃ and 500 ℃ is individually 105%, 107% and 154%, which do not show superplastic obviously. With the increase of deformation and temperature, the original long strips structures of this commercial aluminum alloy continue to break and tend to shorten, and finally become equiaxed structure.

关 键 词：AA5083合金 最大m值法 超塑性 拉伸试验 

分 类 号：TG146.21[一般工业技术—材料科学与工程]