Strains prediction of new SPD process for AZ31 magnesium alloy fabrication
by H-J. Hu
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 9, No. 2, 2014

Abstract: A plastic deformation method, which includes initial forward extrusion and bidirectional lateral extrusion process subsequently, has been used to fabricate the AZ31 magnesium (Mg) alloys. To research the grain refinement mechanism, strains and stress evolution, geometrical and finite element models for the structures of the die and billet have been constructed. Initial and boundary conditions have been exerted. The strain and stress predictions and influences of the severe plastic deformation (SPD) on the grain refinement of the microstructure and effective strain and stress have been researched. Microstructure observations have been carried out in different positions of formed rods. The results showed that original coarsen microstructure of about 400 μm can be refined to homogeneous microstructures with mean grain size of 20 μm at temperature 300°C as the accumulation strain was as high as 5. Increasing cumulative strain is the main reason for grain refinement during the process.

Online publication date: Thu, 30-Apr-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Microstructure and Materials Properties (IJMMP):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com