High temperature deformation of polycrystalline C40 Mo(Si,Al)2
Journal article, 2022

Polycrystalline Mo(Si,Al)2 with C40 crystal structure was deformed in compression with a strain rate of 10−4 s−1 at 1300 °C. The specimens were deformed to a strain of 10%–15% and showed maximum stresses around 150 MPa prior to pronounced softening. No crack formation or significant increase in porosity could be observed. Post-test microstructure analysis revealed that the material was inhomogeneously deformed on both inter- and intragranular levels. Dynamic recrystallization occurred alongside low angle grain boundary formation in highly deformed grains. Furthermore, complex intragranular deformation fields suggest that slip systems other than 21̄1̄0[0001] may be active during deformation.

Dynamic recrystallization


High temperature compression

Electron backscatter diffraction

Mo(Si,Al) 2

Low angle grain boundaries


Aina Edgren

Kanthal AB

Chalmers, Physics, Microstructure Physics

E. Strom

Kanthal AB

Ren Qiu

Chalmers, Physics, Microstructure Physics

Lars Frisk

Luleå University of Technology

Farid Akhtar

Luleå University of Technology

Magnus Hörnqvist Colliander

Chalmers, Physics, Microstructure Physics

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

0921-5093 (ISSN)

Vol. 849 143387

Subject Categories

Applied Mechanics

Other Materials Engineering

Metallurgy and Metallic Materials


Chalmers Materials Analysis Laboratory

Areas of Advance

Materials Science



More information

Latest update