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形为拉伸预变形,通过拉伸试验机,采用引伸计进行预变形量的控制. 表1 2195铝锂合金化学成分 Table 1 Chemical composition of 2195 Al-Li alloy (mass fraction, %) 重固溶-T8再时效2195铝锂合金的室温拉伸性能采用MTS 810材料试验机进行测试,拉伸速度为2 mm/min.拉伸测试样品平行段宽度... of 2195 Al-Li alloy as function of T8 re-aging time at different temperatures 2.2 显微组织 图2所示分别为原始2195-T8铝锂合金及重固溶处理后纵截面的金相照片,二者纵截面均表现为明显拉长的带状晶粒组织,且重固溶处理后晶粒长大程度很小.由于2195铝锂合金时效温度(152 ℃)远低于其固溶温度(505~510......
elements and the co-clustering sequence. Key words: Al-Li alloy; alloying; microstructure; aging hardening; precipitation 新型铝锂合金由于具有密度低,弹性模量高,比强度高和比刚度高,疲劳裂纹扩展速率低和高,低温性能较好等特点,在航空航天领域得到广泛应用.目前,尽管面临复合材料的竞...] Fig.1 Microstructure modelling of the third generation Al-Li alloy[8] 图2 第3代铝锂合金(2099)中几种主要强化相的TEM形貌[9] Fig.2 Main strengthening precipitates in 2099 Al-Li alloy[9]: (a) dark......
Effect of Rare Earth Elements on Anisotropy and Microstructure of Al-Li Alloy 2195 Sheets Liu Yufeng1,Geng Jiping1,Xu Yue1 (1.School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China) Abstract:For the purpose of decreasing the applied limitation resulting from the anisotropic mechanical property of Al-Li alloy 2195, this study......
Effect of two-stage aging on superplasticity of Al-Li alloy LUO Zhi-hui(罗智辉), ZHANG Xin-ming(张新明), DU Yu-xuan(杜予晅), YE Ling-ying(叶凌英) School of Materials Science and Engineering, Central South University, Changsha 410083, China Received 28 July 2006; accepted 15 September 2006 Abstract: The effect of two-stage aging on the microstructures and superplasticity of 01420 Al-Li alloy......
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properties of friction stir welding dissimilar 2198 and C24S Al-Li alloys XING Li1, SONG Xiao2, KE Li-ming1, 2 (1. National Defense Key Disciplines Laboratory of Light Alloy Processing Science..., and the recrystallized grain size of the 2198 Al-Li alloy is larger than that of the C24S Al-Li alloy. With the welding speed increasing from 60 to 120 mm/min, the tensile strength of the joints is higher when......
applications[J]. Metallurgical and Materials Transactions A, 2012, 43(9): 3325-3337. [4] ALEXOPOULOUS N D, MIGKLIS E, STYLIANOS A, MYRIOUNIS D P. Fatigue behavior of the aeronautical Al-Li (2198) aluminum alloy... Ping-an. Study on hardenability of 2099 Al-Li alloy[J]. Hot Working Technology, 2013, 42(22): 156-158. [17] 李劲风, 刘丹阳, 郑子樵. 一种测试金属材料淬透性的方法: 中国, ZL201710225016.6[P]. 2018-06-15. LI Jin-feng, LIU Dan......
Reaction mechanism between oxide film on surface of Al-Li alloy and CsF-AlF3 flux XUE Song-bai(薛松柏), ZHANG Ling(张 玲), HAN Zong-jie(韩宗杰), HUANG Xiang(黄 翔) College of Materials Science...; Abstract: The composition of the oxide film on the surface of Al-Li alloy was measured......
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