Search results

1

Structural Characterization of Rapidly Solidified Al71Ni24Fe5 Alloy

100%

Młynarek K., Czeppe T., Babilas R., Młynarek K., Czeppe T., Babilas R.

Archives of Foundry Engineering

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2021

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issue 3

2

Tem Study of Recrystallization in Ultra-Fine Grain AA3104 Alloy Processed by High-Pressure Torsion

95%

Paul H., Morawiec A., Baudin T., Czeppe T.

Archives of Metallurgy and Materials

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2015

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issue 1

3

Microstructure of the Nialv Alloys Subjected to the Hpt Deformation

83%

Czeppe T., Lityńska-Dobrzyńska L., Świątek Z., Korznikova G. F., Korznikov A. W.

Archives of Metallurgy and Materials

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2013

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issue 2

4

Structure And Martensitic Transformation in Ni44Mn43.5Sn12.5-xAlx Heusler Alloys

72%

Maziarz W., Lityńska-Dobrzyńska L., Major Ł., Czaja P., Dutkiewicz J., Góral A., Czeppe T.

Archives of Metallurgy and Materials

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2013

|

issue 2

5

Structures of Cu-Based Glass Forming System Doped with Iron

72%

Kozieł T., Latuch J., Czeppe T., Ratuszek W., Cios G., Zielińska-Lipiec A., Bała P.

Acta Physica Polonica A

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2016

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vol. 130

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issue 4

913-915

EN

The effects of iron additions on the structure of (Cu_{0.47}Ti_{0.34}Zr_{0.11}Ni_{0.08})_{100-x}Fe_{x} (x=0, 1.5, 3, 6) glass forming system are presented. The alloys were synthesized by arc melting of high purity elements and melt spun to form: rapidly quenched ribbons. X-ray diffraction studies showed the amorphous structure of the base and Fe-containing alloys, confirmed by the presence of exothermic peaks on differential scanning calorimetry curves. Bulk samples in the form of rods (Φ3×55 mm) were cast using a suction casting unit attached to the arc melter. Structural investigations revealed partial crystallization of the base Cu₄₇Ti₃₄Zr₁₁Ni₈ alloy. Iron additions significantly decreased the glass forming ability of the alloy, leading to primary crystallization of dendrites.

6

Composition and Microstructure of the Al-Multilayer Graphene Composites Achieved by the Intensive Deformation

61%

Czeppe T., Korznikova E., Ozga P., Wrobel M., Litynska-Dobrzynska L., Korznikova G., Korznikov A., Czaja P., Socha R.

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vol. 126

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issue 4

921-927

EN

The paper presents results of the studies concerning aluminum-graphene composites produced with use of step technique; first mechanical alloying of Al and graphene powders and later intensive deformation by the high pressure torsion. As a result small, thin and round samples of composites, about 10 mm in diameter were achieved. For comparison similar samples not containing graphene were investigated. The X-ray diffraction, transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy were applied to study composites structures and analyze graphene content and atomic bonds. The Raman spectroscopy method suggested multilayer graphene, which could also be identified as the defected nano-graphite as a component of the composite structure as well as some small content of the aluminum carbides. The highly dispersed microstructures of aluminum matrices were identified with the transmission electron microscopy, showing difference between the samples produced with the increased number of rotations, leading to the increased deformation realized. This method revealed carbon and aluminum oxides in large amounts which is interpreted as a surface effect. This method suggested also formation of the carbon-metal and carbon-metal- oxygen atomic bonds, which might partially result from formation of the carbides.

Refine search results

Structural Characterization of Rapidly Solidified Al71Ni24Fe5 Alloy

Tem Study of Recrystallization in Ultra-Fine Grain AA3104 Alloy Processed by High-Pressure Torsion

Microstructure of the Nialv Alloys Subjected to the Hpt Deformation

Structure And Martensitic Transformation in Ni44Mn43.5Sn12.5-xAlx Heusler Alloys

Structures of Cu-Based Glass Forming System Doped with Iron

Composition and Microstructure of the Al-Multilayer Graphene Composites Achieved by the Intensive Deformation