Volume 11 Issue 2
Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys
Mikhail Linderov, Evgenii Vasilev, Dmitry Merson, Mikhail Markushev and Alexei Vinogradov
1Institute of Advanced Technologies, Togliatti State University, Togliatti 445020, Russia
2Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa 450001, Russia
3Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology—NTNU, N-7491 Trondheim, Norway
*Author to whom correspondence should be addressed.
Abstract
Corrosion fatigue data for magnesium alloys are still scarce. The present communication reports the results of microstructural investigations and fatigue testing of the fine grain Mg-Zn-Zr (ZK60) alloy after multiaxial isothermal forging and of the hot extruded Mg-Y-Zn (WZ21) alloy in air and in the 0.9% NaCl water solution. Both of the alloys demonstrate a very good high-cycle fatigue performance in air. However, the significant drop of fatigue resistance is observed in the corrosive environment. Results are discussed from perspectives of potential applications and future studies.
Keywords:magnesium alloys; fatigue properties; corrosion fatigue; severe plastic deformation; multiaxial isothermal forging