luCAD II - Aluminium Cast Alloy Development II

Purpose and goal:

Aim: Through calculations and tests based on results in feasability study I, including other alloy combinations and higher alloy contents, define scrap-based alloys with 50% higher yield strength and ductility without special hardening relative to the corresponding primary reference alloy. Thus, through recycling, the project will contribute to reduced CO2 emissions by up to appr. 450 kTon / year and car manufacturers depending on the volume and share of secondary alloys in production.

Objective: Definition of high-strength circular scrap-based Al alloy for structural castings Expected results and effects:

- New knowledge for the development of scrap-based aluminum alloys with high castability and 50% higher and stable strength without special heat treatment rel state of art non-heat treated AlSi alloys. The strategy is to, with the right combination of selected alloying elements, increase solution hardening in the as-cast state and significantly reduce the part of unstable precipitation hardening.

- Aluminum casting alloy with increased strength without special heat treatment, - Basis for increased CAE accuracy for cast structures Approach and implementation: Work package 1,5,6 Alloy optimization

Search for best solution - or stable precipitation hardeners from strength - and micro analyzes Prov AluCAD I and with developed alloy calculations Work package 2 Alloy samples Selection of alloy compositions from AluCAD I and Samples for HPDC and Rheo Work package 3 static strength as cast RT and aged

Work package 4 Microstructure identify the influence of alloying elements on structure and properties Work package 7 Coordination, Planning and Evaluation Conclusions Recommendation Dissemination of relevant alloy composition