Table A1: Specific design targets for Project A1
The Enabling Science
Alloy Technology
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Project A1: Al Alloy Development | |||
| Project Leaders: Professor Simon Ringer & Professor Barry Muddle | ||||
| This project is concerned with the metallurgical science and technology of developing novel property-parameter space for structural Al alloys. The target is to develop new mechanical property-performance space in certain Al alloys to increase their breadth of applications, to introduce new engineering-design possibilities and to make these alloys more competitive in the face of the evolving properties of other materials. | ||||
| The project has two major streams (Table A1), each with specific strategic design targets. A notable achievement has been the further development of the cluster-strengthened Al-Cu-Mg alloy with yield strength and total elongation of 230 MPa and ~23%, respectively (Figure A1). Such novel properties places the alloy in a new and unexplored region of property space. Work will be conducted to study the effect of structure and processing parameters on the overall performance of the alloy and its commercial viability as a replacement alloy for some 5xxx Al alloys. | ||||
Table A1: Specific design targets for Project A1 |
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| Stream | A1.1 Fundamental Research: The Enabling Science |
A1.2: Applied Research: Alloy Technology |
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| Aims | To achieve a thorough understanding of the properties and performance of a cluster-strengthened Al-1.1Cu-1.7Mg (at.%) alloy with the view towards developing these properties for commercial application. | To develop a new grade of 2xxx Al alloy for aerospace applications with improved specific strength, ductility and damage tolerance compared with currently available alloys. | ||
| Scientific challenge: What are the critical factors to be understood to ensure that a clustered Al-Cu-Mg solid solution can provide useful properties? | Scientific challenge: Can cluster strengthening and precipitation strengthening be invoked via compositional modification or processing to expand the useful property-performance space with a view towards developing a new 2xxx alloy? | |||
| Major Design Target | To develop a cluster-strengthened Al alloy with properties superior to many current 5xxx Al alloys. | To develop a 2xxx alloy for aerospace applications and unveil the potential coupled effects of cluster-strengthening on a precipitation microstructure. | ||
| Typical Quantitative performance goals | Strength, ductility and workability: > 200 MPa, >20% elongation and adequate workability using conventional TMP routes.
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Strength, ductility and workability: > 500 MPa, >10% elongation and adequate workability using conventional TMP routes. | ||
| Processing: conventional casting and thermomechanical processing routes through to direct strip casting. | Processing: conventional casting and thermomechanical processing, as used for existing 2xxx Al alloys. | |||
| Production costs: competitive with current medium strength 5xxx Al alloys. | Production costs: competitive with current medium strength 2xxx Al alloys. | |||
| Corrosion behaviour: competitive with current medium strength 5xxx Al alloys . | Corrosion behaviour: competitive with current medium strength 5xxx Al alloys. | |||
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