Journal of Clinical & Experimental OncologyISSN: 2324-9110

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Mechanisms of recrystallization and grain growth in a nanostructured austenitic stainless steel annealed under high hydrostatic pressure


Suchecki P, Setman D, Lewandowska M, Zehetbauer M and Krawczynska AT

Warsaw University of Technology, Poland
University of Vienna, Austria

: J Clin Exp Oncol

Abstract


The aim of this study was to investigate the mechanisms of recrystallization and grain growth in a nanostructured austenitic stainless steel 316LVM annealed under high hydrostatic pressure. The nanostructures were obtained by profile rolling (PR) to a total strain of 3.4, and by high-pressure torsion (HPT) to a total strain of 79. These processes resulted in microstructures consisting of nanotwins and nanograins, respectively [1, 2]. The deformed samples were annealed at 900°C for 10 min under atmospheric or hydrostatic pressure of 6 GPa (Fig.1). After 10 min of annealing, the HPTprocessed samples showed smaller grain size than the PRprocessed samples. This was attributed to the more uniform microstructure of a HPT samples and their higher content of non-equilibrium grain boundaries, which have the tendency to a rapid recovery during heating drastically reducing the driving force for grain growth. Annealing under high hydrostatic pressures of 6 GPa retarded the processes of recrystallization and grain growth in samples processed by both methods; however, the retardation is much more pronounced for a PRprocessed samples. Moreover, samples annealed under high pressure showed different textures in comparison to samples annealed under the atmospheric pressure. In the case of PR-processed sample annealed under the high hydrostatic pressure appeared local maxima on <111> fiber close to {111}<-1-12>. In the case of HPT-processed sample, high pressure annealing promoted the appearance of <100> fiber.

Biography


Przemyslaw Suchecki is a researcher at Warsaw University of Technology, Faculty of Materials Science and Engineering. He has published 4 papers in reputable journals. He is working with nanostructured austenitic stainless steel. During his PhD studies he was working with geopolymers.

E-mail: [email protected]

Track Your Manuscript

Media Partners

GET THE APP