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and determined. The results show that the deposited aluminum-magnesium alloy coating is smooth, uniform and compact. The component of magnesium exists in the coating with Al-Mg solid solution and forms in the structure of (200) orientation. With increasing current density, the magnesium content, lattice parameter and thickness of coatings rise linearly. Al-Mg alloy coatings have a good adherent......
via a combination of warm-deforming-annealing-cold-deforming process, which can meet the microstructural request for high temperature superplastic deformation. Key words: Al-Mg alloy...-zheng. The influence of Sc and Zr to the grain refinement of casting Al-Mg alloy[J]. The Chinese Journal of Nonferrous Metals, 1997, 7(4): 75-80. [7] Ocenasek V, Slamova M. Resistance......
Al-Mg合金中层错和孪晶形变能的第一性原理研究董明慧1,2,韩培德1,张彩丽2,杨艳青2,张莉莉2,李洪飞2(1.山西省太原市太原理工大学材料科学与工程学院2.山西省太原市太原理工大学新材料界面科学与工程教育部重点实验室)摘 要:通过基于密度泛函理论(DFT)的第一性原理计算了纯金属Al和Al Mg合金在(111)[112]滑移系的层错能和孪晶形变能,分析了Mg含量,占位对层错能和孪晶形变能的影响.计算选用了局域密度近似(LDA)和广义梯度近似(GGA PW91)2种近似方法,发现GGA PW91所获得的层错能与实验结果符合较好,研究结果表明,纯Al的层错能高于孪晶形变能,随着孪晶层厚度的增加孪晶形变能略有提高,6层呈完全镜面对称孪晶有的孪晶形变能最低:Mg含量增加使Al-Mg合金的层错能,变形孪晶形变......
by dynamic recrystallization of Al-Mg alloy Abstract: In the superplastic deformation of Al Mg alloys, an abnormal type of cavity evolution is found. Cavity growth manifests.... [ Keyword: Al Mg alloy; superplasticity; dynamic recrystallization; cavity evolution model; Received: 1999-12-21 空洞是超塑变形中的一种特殊组织, 在超塑性的理论研究上, 它作为影响超......
; 文献标志码:A Effects of Er and Yb elements on dislocation distributions in binary Al-Mg alloy SONG Min, HE Yue-hui (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The effects of Er and Yb elements on the dislocation distributions of a binary Al-Mg alloy were studied using a transmission electron microscope (TEM). It is shown......
算放电后的电热应力强度因子.结果表明:放电电压对止裂效果存在最优值；在适当的强脉冲电流作用下,裂纹尖端在小范围内被瞬间强化加热,随后在极大的热压应力作用下快速冷却,组织发生明显变化,晶粒得到细化,并围绕裂纹尖端形成等值压缩热应力,对裂纹尖端有"夹紧"作用,进而阻止裂纹扩展.关键词:Al-Mg合金；单边裂纹；微观组织；止裂；电磁热效应Crack arrest of Al-Mg alloy... around the crack tip, which has "clamping" role to the crack tip, and then prevents the crack expansion.Key words:Al-Mg alloy; unilateral crack; microstructure; crack arrest; electromagnetic heating......
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in the alloy. On the basis of τa evaluated from the calculated GPFE of Al-Mg alloys, we conclude that deformation twinning is difficult for Al-Mg alloys even with a high content of Mg. Besides...] SAUVAGE X, ENIKEEV N, VALIEV R, NASEDKINA Y, MURASHKIN M. Atomic-scale analysis of the segregation and precipitation mechanisms in a severely deformed Al-Mg alloy [J]. Acta Mater, 2014, 72: 125-136. [4......
Trans. Nonferrous Met. Soc. China 22(2012) 1810-1816 Deformation defects and electron irradiation effect in nanostructured Al-Mg alloy processed by severe plastic deformation LIU Man-ping1,2, SUN... that the planar defects observed in the HPT alloys mainly result from the significant plastic deformation and are not due to the radiation effect during HRTEM observation. Key words: Al-Mg alloy; severe......
