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Al alloy; homogenization; T phase 由于经济性和安全性的原因,大型飞机需采用大尺寸的结构件以减少铆接和焊接带来的重量增加和强度损失[1].然而,作为最重要的航空结构材料,大型铝材的生产一直是目前制约国内大飞机发展的重要瓶颈.2E12铝合金是在美国2524合金基础上通过成分优化和工艺改进自主研发的一种新型国产航空铝合金[2].其具有优良的断裂韧性,卓越的抗疲劳损伤性能...; 文献标志码:A 文章编号:1672-7207(2017)02-0316-09 Microstructure evolutions of 2E12 Al alloy during......
,随着变形温度的升高而降低. 关键词:2E12铝合金;热变形;流变应力;本构方程 中图分类号:TG 146.2 文献标志码:A Flow stress behavior of 2E12 aluminum alloy during hot plastic deformation at high temperature HUANG Yu-jin... compressed 2E12 aluminum alloy was investigated by compression tests performed on Gleeble-1500 tester at strain rates ranging from 0.01 s-1 to 10 s-1 and temperatures ranging from 300 ℃ to 500......
(2014)05-1428-09 Effect of stress coupled with electric field on microstructure of 2524 aluminum alloy WANG Qi1, 2, 3, FU Shang1, 2, WANG Bin1, 2, YI Danqing1, 2, WANG Hongwei1, 2, ZHOU Mingzhe4 (1..., China) Abstract: The optical microscope (OM), transmission electron microscope (TEM) and positron annihilation spectroscopy were used to analyze the microstructures of 2524 aluminum alloy after stress......
; 文献标志码:A Effect of stress aging on mechanical properties and microstructures of 2E12 aluminum alloy WANG Hong-wei, YI Dan-qing, CAI Jin-ling, WANG Bin (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The influences of tensile stress aging on the mechanical properties and microstructure of 2E12 aluminum alloy were......
behaviors and microstructure evolutions of 2E12 aluminum alloy CHEN Yuqiang1, 2, SONG Wenwei1, PAN Suping3, LIU Wenhui1, 2, TANG Changping1, 2 (1. Key Lab of High Temperature Wear Resistant Materials... distributed T-phase particles promote the homogeneous deformation of alloy and also refine grain size. Key words: 2E12 aluminum alloy; hot deformation; eutectic 出于经济性和安全性的考虑,大型飞机必须采用大尺寸结构件进行组装以减少铆接带来的增重和焊接所造成的......
treatment (493 ℃/20 min and 503 ℃/20 min) on fatigue fracture and room mechanical properties of 2E12 aluminum alloy were investigated. Observation of microstructure and fatigue fracture was presented... of 2E12 aluminum alloy. The number of residual phases (Al2Cu, Al2CuMg) decreases during solid solution treatment. For 493 ℃/20 min and 503 ℃/20 min solution treated alloys, both alloys have the similar......
效;力学性能;微观结构 中图分类号:TG 146.2+1 文献标识码: A Effect of electric field aging on mechanical properties and microstructures of 2E12 aluminum alloy LI Zhi-yan, YI... properties and microstructures of 2E12 aluminum alloy was investigated by means of mechanical tests and transmission electron microscopy (TEM). The mechanism of the effect of an electric field was analyzed......
微米级第二相 中图分类号:TG146.2;TG113.2 文献标志码:A Effect of microstructures on fatigue crack propagation in 2E12 aluminum alloy YAN Liang1, 2, DU Feng-shan1, DAI Sheng-long2, YANG... between microstructure and fatigue crack propagation behaviors of 2E12 aluminum alloys was investigated at room temperature in air. The microstructures and fatigue fracture surfaces of the alloy were......
2E12和2524铝合金微观组织与疲劳裂纹扩展速率研究葛荣山,张永安,李志辉,王锋,朱宝宏,熊柏青北京有色金属研究总院有色金属材料制备与加工国家重点实验室摘 要:采用光学显微镜,扫描电镜,透射电镜以及疲劳性能测试等手段,研究了国产2E12-T3和进口2524-T3合金薄板微观组织和疲劳裂纹扩展性能.结果表明...铝合金,疲劳断口皆呈典型3个区域,裂纹萌生区,前者较平坦而后者相对粗糙,裂纹扩展区皆有明显的疲劳辉纹,辉纹间距分别为0.65和0.35μm,瞬断区,后者具有数量更多,尺寸更小的韧窝.着眼于材料的组织特征,导致2E12-T3和2524-T3铝合金力学性能差异的主要原因可能是由于两者的晶粒组织特征不同.关键词:2E12和2524合金;微观组织;疲劳裂纹扩展速率;......
in the Boeing 777 aircraft[1-4]. 2E12 aluminum alloy is the newest anti-fatigue damage aluminum alloy of China, which is developed based on 2524 aluminum alloy. Pre-strain is an important method to improve... Effect of pre-strain on fatigue crack growth of 2E12 aluminum alloy YI Dan-qing(易丹青)1, 2, YANG Sheng(杨胜)1, 2, DENG Bin(邓斌)1, ZHOU Ming-zhe(周明哲)1 1. School of Materials Science and Engineering......