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Phase Decomposition in a High-Manganese Steel

100%
Witkowska M.
Acta Physica Polonica A
|
2016
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vol. 130
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issue 4
950-952
EN
The present work deals with the texture and microstructure development in high-manganese steel X85MnAl29-9. It was cold rolled to 50% reduction and then aged at 550°C for various times. The investigations included measurements of texture, X-ray phase analysis and microstructure observations. The results indicate that, when ageing takes place, precipitation of κ' carbide in an austenitic matrix and carbide κ at grain boundaries occur. The existence of satellites suggests that (Fe, Mn)₃AlC carbides were formed within the austenite matrix by spinodal decomposition.
2
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Effect of Silicon Addition on the Microstructure of Cast 24Cr-5Ni-2.5Mo-xSi Duplex Steel

51%
Kowalska J., Witkowska M., Kalandyk B., Zapała R.
Archives of Foundry Engineering
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2018
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issue 1
3
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Microstructural Changes in a High-Manganese Austenitic Fe-Mn-Al-C Steel

51%
Kowalska J., Witkowska M., Zielińska-Lipiec A., Ratuszek W.
Archives of Metallurgy and Materials
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2014
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issue 3
4
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Microstructure and Texture Evolution in the Welded Semi-Austenitic PH Steel after the Heat Treatment

51%
Ziewiec A., Witkowska M., Zielińska-Lipiec A.
Acta Physica Polonica A
|
2016
|
vol. 130
|
issue 4
956-959
EN
The aim of this study was to reveal the influence of the heat treatment after welding of 17-7PH (X7CrNiAl17-7) steel on the microstructure evolution and the texture of the welds. Microstructure investigation carried out by light microscopy and transmission electron microscopy showed that the austenite and δ ferrite coexist in as-welded condition. Annealing at the temperature range between 400°C and 620°C after welding causes small changes in the microstructure and the hardness of the welds increases. Heat treatment at 760°C for 1 h resulted in the partial destabilization of the austenite. Aging after destabilization leads to tempering of the martensite: first the hardness increases and then decreases. The maximum hardness is observed when the ageing temperature reaches 510°C. XRD studies confirmed the presence of the two phases: δ ferrite and austenite. Annealing at 400°C/1 h and 550°C/1 h results in changes of the intensities for individual peaks derived from austenite and ferrite. The calculated ratios of peak intensity were compared with the intensities of the reference sample. The differences in intensities suggested strong texture of the material.
5
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Microstructure and Properties of Welds of Semi-Austenitic Precipitation Hardening Stainlees Steel after Heat Treatment

51%
Witkowska M., Ziewiec A., Ziewiec K., Tasak E.
Archives of Metallurgy and Materials
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2013
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issue 2
6
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Influence of Die Forging Parameters on the Microstructure and Phase Composition of Inconel 718 Alloy / Wpływ Warunków Kucia Matrycowego Na Mikrostrukturę Oraz Skład Fazowy Stopu Inconel 718

51%
Bunsch A., Kowalska J., Witkowska M.
Archives of Metallurgy and Materials
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2012
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issue 4
7
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Microstructure And Texture Evolution During Cold-Rolling In The Fe-23Mn-3Si-3Al Alloy

45%
Kowalska J., Witkowska M., Zielińska-Lipiec A., Ratuszek W., Kowalski M.
Archives of Metallurgy and Materials
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2015
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issue 3
8
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Sintered Steels Coated with a Chromium Layer Doped with Diamond Nanoparticles

37%
Petkov V., Valov R., Witkowska M., Madej M., Cempura G., Sułowski M., Petkov V., Valov R., Witkowska M., Madej M., Cempura G., Sułowski M.
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issue 4
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