The success of a FE model for metal cutting process is strongly dependent on the accurate characterization of the workpiece material, under similar conditions as those found in metal cutting. In this paper, dynamic shear tests using a Gleeble machine have been performed on 4 mm thickness disks of AZ31B-O magnesium alloy, using a special designed tool. In order to include the effects of the cryo...

The current work explored additive friction stir deposition of AZ31B magnesium alloy with the aid MELD® technology. bar stock was fed through a hollow tool rotating at constant velocity 400 rpm and translating linear varied from 4.2 to 6.3 mm/s. A single wall consisting five layers each layer 140×40×1 mm3 dimensions deposited under processing condition. Microstructure, phase, crystallographic t...

Friction stir lap welding (FSLW) experiment has been conducted on 3mm thick AZ80 extruded sheet and 2.3mm thick AZ31B rolled sheet. The influence of the shape of the taper thread mixing head on microstructure has been discussed. Pores forming, hooked defects, interface migration, tissue distribution have been analyzed. The organization of both sides of nugget zone (NZ) is arranged diagonally ab...

In this paper, a methodology is presented for obtaining the plastic anisotropy of bulk metallic materials using cross-sectional indentation. This method relies on spherical indentation on the free edge of a specimen, and examining the out-of-plane residual deformation contour persisting on the cross-section after unloading. Results obtained from numerical simulation revealed that some important...

High-frequency impacting and rolling was applied on AZ31B magnesium alloy to obtain a gradient nano-structured surface. Surface characteristics were experimentally investigated, and the nanocrystallization mechanism is discussed in detail. Results showed that the gradient nano-structure with the characteristics of work hardening, compressive residual stress and a smooth surface was induced on t...

The effect of reducing the thinning rate when flow forming AZ31B magnesium alloy barrels on microstructure, crystal orientation, micro-, nano- and macro-mechanical properties was investigated. results demonstrate that undergoes different degrees plastic deformation after forming, grain size dislocation density inside change greatly, evolution pattern organization has a significant mechanical ma...