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Structure and corrosion resistance of Al–Cu–Fe alloys

Progress in Natural Science:Materials International 2020年第3期30卷 393-401页

作者： Rafa? Babilas Anna Bajorek Monika Spilka Adrian Radoń Wojciech ?oński Department of Engineering Materials and Biomaterials Silesian University of Technology Institute of Physics University of Silesia in Katowice ?ukasiewicz Research Network-Institute of Non-Ferrous Metals

The microstructure and electrochemical properties of Al–Cu–Fe alloys with the atomic compositions of Al65Cu20Fe15,Al78Cu7Fe15and Al80Cu5Fe14Si1have been *** alloys were produced by induction melting of pure elements with copper mold *** microstructure of the alloys was analyzed by X-ray diffraction and high-resolution transmission electron *** formation of quasicrystalline phases in the Al–Cu–Fe alloys was *** presence of intermetallic phases was observed in the alloys after crystallization in a form of ingots and *** electrochemical measurements were conducted in 3.5%NaCl *** electronic structure of the alloys was determined by X-ray photoelectron *** post corrosion surface of the samples was checked using a scanning electron microscope equipped with the energydispersive X-ray *** was observed that the Al65Cu20Fe15alloy had the highest corrosion *** improved corrosion resistance parameters were noted for the plate samples rather than those in the as-cast *** the hardness of the Al65Cu20Fe15alloy was significantly higher than the other alloy samples.

关键词： Al-Cu-Fe alloys copper mold casting X-ray diffraction High-resolution transmission electron microscopy X-ray photon spectroscopy Electrochemical impedance spectroscopy

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Influence of niobium and yttrium on plastic deformation energy and plasticity of Ti-based amorphous alloys

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China Foundry 2021年第1期18卷 60-67页

作者： Sheng-feng Shan Hao Wang Bing Zhang Yuan-zhi Jia Ming-zhen Ma Department of Physics Jining UniversityQufu273155China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo315201China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004China

Many amorphous alloys have been developed to date,but the low plasticity has limited their *** achieve an amorphous alloy with high plasticity,a series of(Ti_(40)Zr_(25)Cu_(9)Ni_(8) Be_(18))_(100-x)TM_(x)(x=0,1,2,3,4 at.%,TM=Nb,Y)alloys were designed to study the influence of Nb and Y addition on the *** amorphous samples were prepared using the vacuum melting and copper mold casting *** microstructures,glass forming ability and mechanical properties of the alloys were investigated by X-ray diffractometry(XRD),scanning electron microscopy(SEM),high-resolution transmission electron microscopy(HRTEM),depth-sensitive nanoindentation,and uniaxial compressive *** plasticity of different bulk amorphous alloys was investigated by measuring the plastic deformation energy(PDE)during *** relationship between the PDE value and plasticity in bulk amorphous alloys was *** show that Nb addition decreases the PDE value and promotes the generation of multiple shear bands,which significantly increases the fracture strength and plasticity,while the addition of Y element reduces the fracture strength and plastic strain of the alloy.

关键词： copper mold casting bulk amorphous alloy plastic deformation energy plasticity

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Cast bulk glassy alloys:fabrication,alloy development and properties

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China Foundry 2010年第3期7卷 278-286页

作者： Akihisa Inoue WPI Advanced Institute for Materials Research Tohoku University

Metallic glasses represent an interesting group of materials as they possess outstanding physical, chemical and mechanical properties compared to their crystalline ***, with well designed compositions it is possible to cast liquid alloys into the glassy state at low critical cooling rates from 100 K·s-1 to 1 K·s-1 and in large critical sample sizes up to several centimeters, which significantly enhances the promise for possible applications as advanced engineering *** paper reviews the development of (ZrCu)-based bulk metallic glasses with large sizes by copper mold casting and their unique ***, the ex-situ and in-situ second phases reinforced BMG composites with large plasticity are also presented.

关键词： bulk metallic glasses copper mold casting properties

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