Controlled Semisolid Forging of Aluminium Alloys Using Mechanical Servo Press to Manufacture Products with Homo- and Heterogeneous Microstructures

Abstract

Controlled forging of aluminium alloys is conducted using a mechanical servo press. Semisolid forging can reduce the number of forging passes and energy consumption to produce a product with suitable microstructure. In the proposed semisolid forging, solid fraction of the aluminium alloys being forged is controlled to enable the manufacture of products with homogeneous and heterogeneous microstructures. Semisolid forging experiments using a predetermined sequence represented by transient changes in stroke were systematically conducted. The relationship between the time-dependent semisolid forging sequence and product quality was discussed to reveal the semisolid forming condition for manufacturing products with homogeneous and heterogeneous microstructures. [doi:10.2320/matertrans.M2013098]