GRAIN BOUNDARY CHARACTER DISTRIBUTION, TEXTURE AND SUPERPLASTIC DEFORMATION BEHAVIOR OF AN Al-Li ALLOY

来源期刊：中国有色金属学报(英文版)1999年第1期

论文作者：Zhang Baojin Zeng Meiguang Niu Xuejun Ge Shaoping

文章页码：82 - 85

Key words：aluminum-lithium alloy;　grain boundary character distribution;　recrystallization texture;　 Superplasticity

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.