Phenomena Occurring in Nanostructured Stainless Steel 316LVM during Annealing under High Hydrostatic Pressure

Autor(en)

Agnieszka Teresa Krawczynska, Stanislaw Gierlotka, Przemyslaw Suchecki, Daria Setman, Boguslawa Adamczyk-Cieslak, Michal Gloc, Witold Chrominski, Malgorzata Lewandowska, Michael Zehetbauer

Abstrakt

The aim of the study is to demonstrate the impact of high hydrostatic pressure annealing on the grain boundary character, precipitation rate, and susceptibility to intergranular corrosion of nanostructured austenitic stainless steel 316LVM. To this end, samples of an austenitic stainless steel are deformed by high pressure torsion and subsequently annealed at 900 °C for 10 min under a pressure of 2, 6 GPa and, for comparison, under atmospheric pressure. The resulting microstructures are examined using electron beam scattering diffraction, and transmission and scanning electron microscopy. It is shown that the pressure applied during annealing leads to a higher percentage of high‐angle grain boundaries than does atmospheric pressure. Moreover, it promotes the coexistence of two orientations, <111> and <100>, whereas atmospheric supports mainly <111>. High pressure hinders the growth of carbides, but drastically increases their number compared with atmospheric pressure annealing. As a consequence, the highest number of Cr23C6 carbides are present in the sample annealed under 6 GPa, making this sample susceptible to intergranular corrosion.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Warsaw University of Technology, Polish Academy of Sciences (PAS)

Journal

Advanced Engineering Materials

Band

21

Anzahl der Seiten

9

ISSN

1438-1656

DOI

https://doi.org/10.1002/adem.201800101

Publikationsdatum

05-2018

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/ed93d3b9-98ae-49c2-98c0-2753ea84542f