An innovative near equal channel angular extrusion(NECAE) method was developed.

Equal-Channel Angular Pressing of Alloys for Grain Refinement;

Numerical study on equal channel angular pressing based on element-free Galerkin method;

Effect of hydrostatic stress on porous metal during equal channel angular pressing;

Finite element simulation of equal channel angular extrusion process of Mg alloy;

For developing the super-plastic forming technology of precision parts of Magnesium alloys,the fine grained AZ91 alloy is prepared through equal channel angular extrusion process,then using the billets with fine grain,the super-plastic die forging processes of two precision gear parts are investigated.

Distribution of die stress in equal channel angular extrusion(ECAE) is simulated with non-linear finite-element software MSC.

The influence of the microstructure evolution of materials on the strain hardening,the stress and the strain is the key to make metal materials forming by equal channel angular pressing(ECAP).

25%Cu alloy was suffered from equal channel angular pressing(ECAP) in this experiment,in which an ECAP die with the inner angle =90°,outer angle ψ=30°.

The extrusion deformation experiments for 6061 aluminium alloy were carried by using composite extrusion technology,which combined equal channel angular pressing(ECAP) and cyclic channel die compression(CCDC).