Abstract
AbstractContinuous miniaturisation of products e. g. for the automotive or the microelectronic sector necessitates process chains, which allow the manufacturing of microscopically small components in high quantities. The development of required processes and technologies is the aim of the Collaborative Research Centre (CRC) 747 “Micro Cold Forming” of the German Research Foundation. Besides micro cold forming another necessary step in the manufacturing process chain is the heat treatment process that enables the adjustment of materials properties being suitable for cold forming. Finally the application properties also have to be adjusted e. g. by precipitation hardening of aluminium alloys to increase the strength above the strain hardened level. Within the CRC an advanced Al‐Sc alloy with 2 mass‐% Scandium was developed to achieve particular properties. According to the very high Sc content dissolved a greater number of fine and homogeneously distributed precipitates causing a significant strengthening effect will be formed during artificial ageing. To meet the requirements of a high production rate the ageing of the micro deep drawn cups (1 mm in diameter) was performed in very short time in a drop‐down tube furnace. Before and after ageing the cups were characterised by ultra micro hardness measurements.
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