Deformation twin interactions with grain boundary particles in multi-phase magnesium alloys

A crystal plasticity FE model for deformation with twin nucleation in magnesium alloys

Article history: Received 2 July 2014 Received in final revised form 27 September 2014 Available online 22 October 2014

Clean Grain Boundary Found in C14/Body-Center-Cubic Multi-Phase Metal Hydride Alloys

The grain boundaries of three Laves phase-related body-center-cubic (bcc) solid-solution, metal hydride (MH) alloys with different phase abundances were closely examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and more importantly, electron backscatter diffraction (EBSD) techniques. By using EBSD, we were able to identify the alignment of the crystallograp...

Deformation and Recrystallization Behaviors in Magnesium Alloys

Grain-Boundary Sliding in AZ31 Magnesium Alloys at Room Temperature to 523K

Rolled sheets of AZ31 Mg alloys were subjected to tensile testing at temperatures ranging from room temperature to 523K. The occurrence of grain-boundary sliding (GBS) at room temperature was demonstrated by the displacement of scribed lines across grain boundaries of deformed samples. Surface relief of deformed samples was measured by use of a scanning laser microscope. GBS strain was calculat...

Developing grain boundary diagrams for multicomponent alloys

Impurity-based, premelting-like, intergranular films (IGFs, a common type of grain boundary complexion) can form in various materials and influence sintering, creep, and microstructure development. A thermodynamic framework is presented to forecast the formation and stability of these premelting-like grain boundary complexions (a.k.a. interfacial “phases” that are thermodynamically two dimensio...