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Phase transformations in ball milled AISI 316L stainless steel powder and in the steel after sintering
|Agnieszka Szymanska 1, Dariusz Oleszak 1, Agnieszka Grabias 2, Krzysztof Sikorski 1, Jan Kazior 3|
1. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
The paper shows the influence of the ball milling process on the structure of 316L stainless steel powder and the influence of sintering process of the powder on the structure of obtained steel. X-ray diffractometry and differential thermal analyze (DTA) results showed that ball milling results in a partial transformation of austenite into martensite. The martensite fraction in the sample was estimated from the Mössbauer spectra. The changes of lattice parameter and crystallite size of austenite were calculated. The powders after milling were compacted and sintered simultaneously by impulse plasma method. The final structure of the sinters was characterized by optical microscopy equipped with computer image analyzer, SEM and X-ray diffractometry.
Presentation: poster at E-MRS Fall Meeting 2004, Symposium I, by Agnieszka Szymanska
See On-line Journal of E-MRS Fall Meeting 2004
Submitted: 2004-05-21 09:41 Revised: 2009-06-08 12:55