Abstract

Equal – channel angular pressing (ECAP) is a perfect process to produce important refinement through grain structure by achieve severe plastic deformation . An increase in requirements to enhance the mechanical properties for light metal led to new changes in production methods. The plastic deformation through the process is controlled by die geometry , characteristic of billet material , and process variables . ECAP process is a convenient method to increase the strength of aluminum alloys by making ultrafine grain size . In this study , numerical method of Q Form program is used to investigate the effect of die angle on temperature distribution during ECAP process for aluminum alloy Al6061. Three type of angles are used in this study ( 90? , 110 ? , 135? ) to discuss the influence of increasing die angle on products temperature .The results show that when increase die angle the temperature will decrease because the friction factor will decrease ,while through using low angle , high friction factor occur and billet temperature raise .

References

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