Powder metallurgy processing of Al–Cu–Mg alloy with low Cu/Mg ratio

Autor:	R. W. Cooke, R.L. Hexemer, I. W. Donaldson, D P Bishop
Rok vydání:	2012
Předmět:	Materials science business.product_category Metallurgy Alloy Metals and Alloys Compaction chemistry.chemical_element Sintering engineering.material Condensed Matter Physics chemistry Mechanics of Materials Aluminium Powder metallurgy Ultimate tensile strength Materials Chemistry Ceramics and Composites engineering Die (manufacturing) Tin business
Zdroj:	Powder Metallurgy. 55:29-35
ISSN:	1743-2901 0032-5899
Popis:	The objective of this work was to develop an Al–Cu–Mg alloy with a low Cu/Mg ratio suitable for press and sinter powder metallurgy (PM) processing. A bulk composition of Al–2·3Cu–1·6Mg was explored for this purpose. Data revealed that the alloy exhibited a normal response to uni-axial die compaction with a performance that was aligned with commercial blends. Temperature and tin content were found to influence the sintering response. Once optimised, near-full theoretical density was achieved in the sintered product. The alloy was also responsive to T6 heat treatment. Peak hardness was attained by solutionising at 530°C and then aging at 200°C for 20 h. Tensile data revealed that the alloy exhibited a very well balanced combination of properties in the T1 and T6 tempers. In this sense, relatively high values of yield strength and ultimate tensile strength were accompanied by wrought-like stiffness and levels of tensile ductility that were abnormally high for press and sinter aluminium PM alloys.
Databáze:	OpenAIRE
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