Grain refinement in the formability of aluminium thin cup

Authors

Syamsul Hadi, University of WollongongFollow
A Kiet Tieu, University of WollongongFollow
Cheng Lu, University of WollongongFollow
Lihong Su, University of WollongongFollow
Hailiang Yu, University of WollongongFollow

RIS ID

86705

Publication Details

Hadi, S., Tieu, A. Kiet., Lu, C., Su, L. & Yu, H. (2014). Grain refinement in the formability of aluminium thin cup. Materials Science Forum, 773-774 166-175.

Abstract

A refinement of the grain diameter of 300μm thick Aluminium foil through an ARB process up to four cycles followed by a stress relief annealing has increased the formability of a cup drawing. The formability in terms of LDR has increased from 1.87 in full annealed condition to 2.00 for the ARB processed sample subjected to a stress relief anneal at 200°C. In addition to an improved formability obtained in a cup formation, the combined ARB process and annealing can also reduce cup earing and wrinkle on the cup wall. This was reflected in the normal and planar anisotropy values.