Effect of rare earth Ce addition on the microstructure and mechanical properties of an Al–Cu–Mg–Ag alloy

The precipitation hardening response, microstructure and mechanical properties of three Al–Cu–Mg–Ag based alloys containing 0, 0.20 and 0.45 (wt%) Ce were investigated by transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). It is shown that increasing Ce content from 0...

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Bibliographic Details
Published in:Journal of alloys and compounds 2003-03, Vol.352 (1), p.84-88
Main Authors: Xiao, D.H., Wang, J.N., Ding, D.Y., Yang, H.L.
Format: Article
Language:English
Subjects:
Aluminum alloys
Cerium
Condensed matter: structure, mechanical and thermal properties
Electron, ion, and scanning probe microscopy
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties
Mechanical properties of solids
Microstructure
Physics
Structure of solids and liquids
crystallography
Transmission, reflection and scanning electron microscopy(including ebic)
Tribology and hardness
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Summary:The precipitation hardening response, microstructure and mechanical properties of three Al–Cu–Mg–Ag based alloys containing 0, 0.20 and 0.45 (wt%) Ce were investigated by transmission electron microscopy (TEM) and differential scanning calorimetry (DSC). It is shown that increasing Ce content from 0 to 0.45 wt% increased the tensile strength at all test temperatures up to 350 °C. The high strength of the alloys with Ce is attributed to the high density and high thermal stability of fine Ω precipitates.
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(02)01162-3