An attempt of obtaining nanocrystalline austenitic steel by ball milling of powders.

• Autorzy: Oleszak D. , Grabias A. , Kulik T.
• Konferencja: International Conference on Fabrication and Properties of Metallic Nanomaterials, Warsaw, 17-19 June, 2004.
• Języki publikacji: EN

Abstrakty

EN

Many nanocrystalline metallic materials were developed, applying various processing methods, including ball milling. Also nanocrystalline ferritic steels have been fabricated by this technique, allowing for the improvement of their mechanical properties. In this work, an attempt was made to obtain austenitic steel in the nanocrystalline state by applying the ball milling method. X-ray diffractometry (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and Moessbauer spectrometry were appplied as structure characterisation techniques. The ball milling of 316L austenitic steel powders resulted in the formation of strain induced martensite and finally, after 100 h of processing, two-phase structure of austenite (50%) and martensite (50%) was observed. The main mean crystallite size of both phases was of the range of 10-20 mm. Heating the milled samples up to 720 degrees C led to the decrease of the martensite contribution down to 8%.

Słowa kluczowe

EN

austenitic steel; nanocrystalline material; powder; ball milling

PL

stal austenityczna; materiał nanokrystaliczny; proszek; frezowanie kuliste

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2004
• Tom: Vol. 25, nr 4
• Strony: 539--545

Twórcy

autor

Oleszak D.

• Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland

autor

Grabias A.

• Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland

autor

Kulik T.

• Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland

• Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland

Bibliografia

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• [3] G. K. Williamson, W. H. Hall, Acta Metallurgica, 1, 22 (1953).