中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
Vol. 9 No. 1 March 1999 |
(College of Sciences, Northeastern University, Shenyang110006, P. R. China)
Abstract:The grain boundary character distribution and the texture of 2091 Al-Li alloy recrystallized at different temperatures were measured by TEM and X-ray techniques respectively. The occurrence frequency of low-energy boundaries decreases with increasing recrystallization temperature, while the frequency of highenergy boundaries increases. The strongest component of recrystallization texture in the test temperature range is {011}〈111〉. The relative intensity of the texture tends to decrease with increasing recrystallization temperature. The material which contains a high frequency of low-energy boundaries exhibits lower deforming stress and high elongation.
Key words: aluminum-lithium alloy grain boundary character distribution recrystallization texture Superplasticity