湖南大学学报（自然科学版）2016，Vol.43Issue(6)：16-21,6.
2A66铝锂合金时效行为的研究
The Aging Behavior of Aluminum-Lithium Alloy 2A66
摘要
Abstract
The evolution of microstructures and the properties of 2A66 Al‐Li alloy during artificial ag‐ing was studied with differential scanning calorimetry (DSC) ,hardness measurement ,tensile testing , scanning electron microscope (SEM ) and transmission electron microscope (TEM ) .The results indicate that the strength can reach the peak value with the increase of aging time ,and the higher the aging temper‐ature ,the shorter the time for peak value .The best aging process for peak value of 2A66 Al‐Li alloy ages at 165 ℃ for 64 h and the alloy gets a good combination of strength and plasticity .Its hardness ,σb ,σ0 .2 andδare 146HB ,526 .5 MPa ,448 .9 MPa ,10 .1% .Theδ',θ'and T1 phases are the major precipitates of 2A66 alloy ageing at 165 ℃ .At the early stage of aging ,the main source of strengthening for the alloy is the GP zone ,δ'phase andθ'phase .At the peak of aging ,theθ'phase and T1 phase are the main strengthe‐ning phases .关键词
时效/显微组织/力学性能/2A66铝锂合金Key words
aging/microstructure/mechanical property/2A66 Al-Li alloy分类
矿业与冶金引用本文复制引用
高文理,曹亚雷,陆政,张显峰,冯朝辉..2A66铝锂合金时效行为的研究[J].湖南大学学报（自然科学版）,2016,43(6):16-21,6.基金项目
国家自然科学基金资助项目（51271076，51474101），National Natural Science Foundation of China （）
