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Effect of Addition Ce on Crystallisation Kinetics and Structure of Zn-Al-Cu Alloys

M. Krupiński
Archives of Metallurgy and Materials | 2018 | vol. 63 | No 3 | 1173-1178 | DOI: 10.24425/123790
Keywords casting alloys crystallisation kinetics Zn-Al alloys Ce modification
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Abstract

The main goal of the presented work was to determine the relationship between changes in the shape of the derivative curve and the microstructure of Zn-Al-Cu alloys before and after modification. To describe the phenomena that occur in the material during solidification as a result of the modification in the chemical composition, the thermal-derivative analysis method was applied. This method allows to describe and interpret the kinetics of crystallisation of the tested alloys. To describe the morphology and phase composition, light and electron microscopy (SEM, TEM) was also used. The modification of the hypereutectic Zn-Al-Cu alloys with the addition of Ce causes a reduction in the size α' + η eutectics and change in the morphology of the α' phase precipitates from dendritic to “tweed”.

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Authors and Affiliations

M. Krupiński

Thermal-Derivative Analysis and Precipitation Hardening of the Hypoeutectic Al-Si-Cu Alloys

P.E. Smolarczyk M. Krupiński
Archives of Foundry Engineering | 2019 | vol. 19 | No 1 | 41-46 | DOI: 10.24425/afe.2018.125189
Keywords Thrermal-derivative analysis Heat treatment hardness Metallographic analysis Al-Si-Cu alloys
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Abstract

The research focused on the influence of the solution temperature on the structure of precipitation hardening multi-component hypoeutectic aluminium alloys. The AlSi8Cu3 and AlSi6Cu4 alloys were used in the study and were subjected to a thermal-derivative analysis. The chemical composition and crystallization of phases and eutectics shift the characteristic points and the corresponding temperatures to other values, which affect to, for instance, the solution temperature. The alloys were supersaturated at 475°C (according to the determined temperature (TSol) and 505°C for 1.5 hours. Aging was performed at 180°C for 5 hours. The Rockwell hardness measurement, metallographic analysis of alloys by means of light microscopy as well as chemical and phase analysis using scanning electron microscopy and X-ray crystallography were carried out on alloys. The use of computer image analysis enabled the determination of the amount of the current Al2Cu phase in the alloys before and after heat treatment.

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Authors and Affiliations

P.E. Smolarczyk
M. Krupiński

Structure and Properties of Diamond-Like Carbon Films Deposited by PACVD Technique on Light Alloys

T. Tański M. Krupiński K. Labisz K. Lukaszkowicz Ł. Krzemiński
Archives of Metallurgy and Materials | 2016 | No 3 September | DOI: 10.1515/amm-2016-0218
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Authors and Affiliations

T. Tański
M. Krupiński
K. Labisz
K. Lukaszkowicz
Ł. Krzemiński

Influence of Mg Addition on Crystallisation Kinetics and Structure of the Zn-Al-Cu Alloy

M. Krupiński M. Król T. Tański K. Labisz B. Krupińska M. Polok-Rubiniec
Archives of Metallurgy and Materials | 2016 | No 2 June | DOI: 10.1515/amm-2016-0132
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Authors and Affiliations

M. Krupiński
M. Król
T. Tański
K. Labisz
B. Krupińska
M. Polok-Rubiniec

Copper Beam Electron Alloying with Ti Powder

P.E. Smolarczyk M. Krupiński M. Węglowski Wojciech Pakieła P. Śliwiński
Archives of Foundry Engineering | 2024 | vol. 24 | No 1 | 88-93 | DOI: 10.24425/afe.2024.149255
Keywords Copper Beam electron alloying Abrasion resistance Conductivity
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Abstract

The paper presents the effect of electron beam alloying on the surface of a copper flat bar (M1Ez4) with titanium powder. Due to the quality of the surface after alloying and the obtained properties, the parameters used were given which met the assumed conditions to the greatest extent. The microstructure and mechanical properties as well as the chemical composition of surface-modified electron-beam copper show improved mechanical properties, i.e. hardness and abrasion resistance. This article uses research techniques using scanning electron microscopy and analysis of chemical composition in micro-areas (EDS). In order to examine the properties of the material after electron beam modification, hardness measurements were performed at low loads (HV0.1), abrasion resistance was tested, and conductivity was also measured. As a result of modifying the chemical and phase composition of M1E copper using an electron beam, the hardness increased by 46%, while the conductivity decreased by 16% due to the formation of intermetallic phases during solidification.
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Bibliography

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Authors and Affiliations

P.E. Smolarczyk
1
ORCID: ORCID
M. Krupiński
1
ORCID: ORCID
M. Węglowski
2
ORCID: ORCID
Wojciech Pakieła
1
ORCID: ORCID
P. Śliwiński
2
ORCID: ORCID
  1. Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A, 44-100 Gliwice, Poland
  2. Łukasiewicz Research Network – Upper Silesian Institute of Technology, Bł. Czesława 16-18, 44-100 Gliwice, Poland

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