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Bi对AZ80镁合金凝固行为及显微组织的影响王亚霄1,付俊伟1,王晶2,罗天骄1,董旭光2,杨院生2(1.辽宁省沈阳市科学院金属研究所2.东北大学 冶金与材料学院,沈阳110006)摘 要:采用加热-激冷方法和OM,SEM,XRD,DSC等分析手段,研究了AZ80-Bi镁合金的凝固行为,分析了合金的凝固组织特征及其演变过程,阐明了合金的凝固序列.AZ80-2%Bi(质量分数)合金的铸态显微组织由α-Mg,β-Mg17Al12和Mg3Bi2相组成,其中Mg3Bi2相以片状和颗粒状两种形态存在.将2%Bi加入AZ8......
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激光快速熔凝Ni-Sn共晶合金的组织演变曹永青1,林鑫1,汪志太1,杨海欧1,黄卫东1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:采用Ni 28%Sn,Ni 30%Sn,Ni 33%Sn和Ni-35%Sn(质量分数)共4种成分的亚共晶和过共晶合金,考察了Ni Sn共晶合金在激光快速熔凝过程中的组织演化过程.当激光扫描速率较低时,Ni 28%Sn亚共晶合金和Ni-35%Sn过共晶合金的熔凝组织主要由细化的初生枝晶(亚共晶合金为α-Ni相,过共晶合金为Ni3Sn相)和枝晶间共晶(α-Ni+Ni3S......
by OM, XRD, SEM and EDS. The temperature of pressure infiltration was reduced by using Al-Si eutectic alloy instead of pure Al, which can effectively decrease non-diffusion reaction between liquid Al... that the prepared Ti-Al complex possesses a superior deformation capability.Key words:pressure infiltration; Ti-Al complex; Al-Si eutectic alloy; microstructure......
of metal-gas eutectic method (GASAR), porous Cu-Mn alloy with oriented pores was fabricated successfully. The variation of pore structure was studied by experiments. The results show that the pore... Influence of solidification mode on pore structure of directionally solidified porous Cu-Mn alloy JIANG Guang-rui, LI Yan-xiang, LIU Yuan Key Laboratory for Advanced Manufacturing by Materials......
: eutectic alloy; peritectic alloy; coupled growth; morphological stability 具有两固相α, β和一个液相L三相平衡的共晶合金和包晶合金对于传统的铸造, 焊接乃至先进的超导体晶体生长都具有重要的应用[1]. 理论上讲, 在平衡点以外共晶和包晶合金形成两固相的原位混合物在热力学上都是可能的. 这种原位的混合物是两固... W, Rios C T, et al. Eutectic alloy microstructure: atomic force microscopy analysis[J]. Applied Surface Science, 2003, 240: 414-423. [14]Bei H, George E P, Kenik E A, et al. Directional......
Stored energy analysis of Zn-5Al eutectic alloy in superplastic deformationSHI Zhiqiang, YE Yifu XI Xuekui and LI ShichurKey Laboratory of Liquid Structure and Heredity of Materials, Ministry... energy and the energy release during SPD (superplastic deformation) of a Zn-5 Al alloy were studied. The alloy after rolling process gains more stored energy, and the as-rolled specimen can obtain......
Phase-field simulation of lamellar growth for a binary eutectic alloy LI Xin-zhong(李新中)1, 2, LIU Dong-mei(刘冬梅)1, SUN Tao(孙 涛)2, SU Yan-qing(苏彦庆)1, GUO Jing-jie(郭景杰)1, FU Heng-zhi(傅恒志)1...; Abstract: Using general multi-phase-field model, detailed microstructures corresponding to different initial lamellar sets were simulated in a binary eutectic alloy......
, Northwestern Polytechnical University, Xian 710072, China) Abstract: The unidirectional solidification process of a binary eutectic model alloy at low Peclet number was simulated by multi-phase field... A, 2004, 35A: 1815-1828. [15]Karma A. Phase field model of eutectic growth[J]. Phys Rev E, 1994, 49(3): 2245-2250. [16]Wheeler A A, McFadden G B, Boettinger W J. Phase-field model of a eutectic alloy......
) were separately used in the electrodeposition of Zn-Ni alloy films from a deep eutectic solvent. The effects of these two additives on electrodeposition behavior, composition, morphology, and corrosion performance of the Zn-Ni alloys were investigated. The electrodeposition behaviors of Zn-Ni alloy revealed by the cyclic voltammetry show that the addition of EDTA to the Zn-Ni electrolyte enhances......