Temperature dependent mechanical properties of zirconium processed by high-pressure torsion at 300 and 77 K

Autor(en)

A. V. Podolskiy, Elena D. Tabachnikova, Bartlomiej Bonarski, Daria Setman, Clemens Mangler, Erhard Schafler, Michael Zehetbauer

Abstrakt

Several structural states of nanostructured zirconium (average grain size of 80–200 nm) were achieved by high pressure torsion (HPT) at temperatures 300 and 77 K, at pressures of 2 and 4 GPa with and without subsequent annealing. Mechanical properties of the nanostructured Zr were investigated by uniaxial compression at temperatures 300, 77 and 4.2 K. Comparison of the strength characteristics, plasticity and strain hardening of the nanostructured and coarse-grained Zr has been carried out. The influences of static recovery occurring after HPT at 77 K, and of twinning, on plasticity and strength of nanostructured Zr have been discussed.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

National Academy of Sciences of Ukraine (NASU)

Journal

Kovove Materialy - Metallic Materials

Band

54

Seiten

1-8

Anzahl der Seiten

8

ISSN

0023-432X

DOI

https://doi.org/10.4149/km-2016-1-1

Publikationsdatum

01-2016

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Mechanics of Materials, Mechanical Engineering, Metals and Alloys, Materials Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5ac9760c-a733-4bb6-8cce-429e4a221845