A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A tuning nano-precipitation approach for achieving enhanced strength and good ductility in Al alloys
Highlights Al–Mg–Si–Cu alloy sheets with enhanced strength and good ductility were processed. Fine particles formed before deformation led to a final homogeneous precipitation. Continuous precipitates occurred in sheets with an initial natural aging applied.
Abstract A new strategy through controlling the aggregation states of alloying elements before cold-rolling is proposed to tune the nano-precipitation in Al alloys processed by combining deformation and aging. A considerable improvement in strength and good ductility is achieved in Al–Mg–Si–Cu alloy by our approach, which is applicable to many precipitation-hardened alloy systems and suitable for industrial application. A bi-modal distribution of precipitates, discrete lath-like Q″-type precipitate and continuous precipitate with the composition identical to Q′-type phase, occur in the annealed sample pre-treated by natural aging. A short-term artificial aging which induces a dispersion of nano-sized coherent particles, mainly GP zone of the monoclinic β″-type phase, before cold-rolling can lead to the formation of finely and homogeneously distributed Q″-type precipitates, which are in favor of an enhancement in strengthening potential for the final aging. Our finding suggests that the solutes aggregation state before deformation affects significantly the re-precipitation of solutes during the subsequent annealing.
A tuning nano-precipitation approach for achieving enhanced strength and good ductility in Al alloys
Highlights Al–Mg–Si–Cu alloy sheets with enhanced strength and good ductility were processed. Fine particles formed before deformation led to a final homogeneous precipitation. Continuous precipitates occurred in sheets with an initial natural aging applied.
Abstract A new strategy through controlling the aggregation states of alloying elements before cold-rolling is proposed to tune the nano-precipitation in Al alloys processed by combining deformation and aging. A considerable improvement in strength and good ductility is achieved in Al–Mg–Si–Cu alloy by our approach, which is applicable to many precipitation-hardened alloy systems and suitable for industrial application. A bi-modal distribution of precipitates, discrete lath-like Q″-type precipitate and continuous precipitate with the composition identical to Q′-type phase, occur in the annealed sample pre-treated by natural aging. A short-term artificial aging which induces a dispersion of nano-sized coherent particles, mainly GP zone of the monoclinic β″-type phase, before cold-rolling can lead to the formation of finely and homogeneously distributed Q″-type precipitates, which are in favor of an enhancement in strengthening potential for the final aging. Our finding suggests that the solutes aggregation state before deformation affects significantly the re-precipitation of solutes during the subsequent annealing.
A tuning nano-precipitation approach for achieving enhanced strength and good ductility in Al alloys
Liu, C.H. (author) / Li, X.L. (author) / Wang, S.H. (author) / Chen, J.H. (author) / Teng, Q. (author) / Chen, J. (author) / Gu, Y. (author)
2013-08-11
5 pages
Article (Journal)
Electronic Resource
English
A tuning nano-precipitation approach for achieving enhanced strength and good ductility in Al alloys
| British Library Online Contents | 2014
Achieving High Strength and High Ductility in Precipitation-Hardened Alloys
| British Library Online Contents | 2005
Nano-approach unites strength and ductility
British Library Online Contents | 2003
Quasicrystalline Al-alloys with high strength and good ductility
| British Library Online Contents | 2000
High-strength binary Ti-Fe bulk alloys with enhanced ductility
| British Library Online Contents | 2004