Affiliation:
1. Department of Engineering Materials, University of Sheffield
Abstract
Thixoforging (a semi-solid metal-forming process) of non-dendritic A357 aluminium alloy has been studied to assess the effects of process variables on the component integrity. Complete filling of the dies required ram velocities in excess of 300 mm/s and centre-line porosity in the thixoforged components was reduced by ram loads up to 55 kN. The mechanical properties of these thixoforgings were superior to conventionally cast alloy. Some work has also been carried out on M2 tool steel and Stellite 21 to demonstrate that these alloys may be thixoforged to complex shapes with good mechanical properties.
Subject
Industrial and Manufacturing Engineering,Mechanical Engineering
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52 articles.
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