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1
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Estimation Of Cooling Rates In Suction Casting And Copper-Mould Casting Processes

100%
Kozieł T.
Archives of Metallurgy and Materials
|
2015
|
issue 2
2
Publication available in full text mode
Content available

Effect of Zr Purity and Oxygen Content on the Structure and Mechanical Properties of Melt-Spun and Suction-Cast Cu46Zr42Al7Y5 Alloy

51%
Kozieł T., Latuch J., Cios G., Bała P.
Archives of Metallurgy and Materials
|
2016
|
issue 2
3
Publication available in full text mode
Content available

Structure of the Amorphous-Crystalline Fe66Cu6B19Si5Nb4 Alloy Obtained by the Melt-Spinning Process

51%
Kozieł T., Zielińska-Lipiec A., Latuch J.
Archives of Metallurgy and Materials
|
2013
|
issue 2
4
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Necessary Thermodynamics Factors to Obtain Simple Solid Solutions in High-Entropy Alloys from the Al-Ti-Co-Ni-Fe System

51%
Górecki K., Bała P., Kozieł T., Cios G.
Archives of Metallurgy and Materials
|
2017
|
vol. 62
|
issue 4
5
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The Characterization Of Cast Fe-Cr-C Alloy

45%
Wieczerzak K., Bała P., Stępień M., Cios G., Kozieł T.
Archives of Metallurgy and Materials
|
2015
|
issue 2
6
Content available remote

Structures of Cu-Based Glass Forming System Doped with Iron

39%
Kozieł T., Latuch J., Czeppe T., Ratuszek W., Cios G., Zielińska-Lipiec A., Bała P.
Acta Physica Polonica A
|
2016
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vol. 130
|
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.
7
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Microstructural Characteristic of Hypereutectoid Iron Alloys Melted in ArcMelter Furnace

39%
Frocisz Ł., Krawczyk J., Kozieł T., Goły M., Tokarski T., Wieczerzak K.
Acta Physica Polonica A
|
2016
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vol. 130
|
issue 4
939-941
EN
ArcMelter furnace is commonly used as a method for synthesis of amorphous and nanocrystalline materials. Due to easy and precise chemical composition control, also short time of whole process, this method was used to synthesis of new model hypereutectoid iron alloys. Material for the investigation was 90CrV6 steel. The chemical composition of this steel was modified to obtain the increase of carbides volume fraction with preserving the same chemical composition and mechanical properties of the matrix. The melt was conducted at sub atmospheric pressure of argon. The obtained materials were chemically analyzed by the use of optical emission spectrometer. The metallographic analysis was performed by the use of microscope. Phase composition in cast state was analyzed by X-ray diffraction. Chemical composition of the ingots differed from the previously established compositions in the range of 0.08 mass percentage. The high cooling rate resulted in dendritic character of the obtained microstructures. The microstructure of modified tool materials was plate martensite with large amount of retained austenite. The stress induced martensitic transformation in the crack area was observed. Retained austenite destabilization was initiated by the stress relaxation related with material cracking.
8
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X-ray Diffraction and EBSD Study of Al-Ti-Co-Ni-Fe High-Entropy Alloy

39%
Górecki K., Bała P., Cios G., Stępień M., Kozieł T., Wieczerzak K., Tokarski T.
Acta Physica Polonica A
|
2016
|
vol. 130
|
issue 4
991-992
EN
Al₁₅Ti₂₀Co₂₀Ni₂₅Fe₂₀ alloy, synthesized in an arc furnace, was characterized by microscopic investigations, X-ray diffraction and electron backscatter diffraction techniques. Theoretical assumptions indicate a dual-phase crystal structure fcc+bcc. It was shown that dendrites and eutectic are bcc phase, and the interdendritic region is fcc phase.
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