Reply to the comments on “Room-temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield-strength development”
Starink, M.J., Cerezo, A., Yan, J.L. and Gao, N. (2006) Reply to the comments on “Room-temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield-strength development”. Philosophical Magazine Letters, 86, (4), 243-252. (doi:10.1080/09500830600678888).
This is the latest version of this item.
Our recent work on Al-Cu-Mg-based alloys with Cu:Mg ratio close to unity showed that the rapid hardening at room temperature and the substantial heat evolution arising from the formation of Cu-Mg co-clusters. Here, it is shown that the measured enthalpy of formation of clusters (similar to 0.3 eV per Mg atom) is in reasonable agreement with expectations based on the similarity with Mg-vacancy clusters. The origin of the term GPB zones, as applied to the rapid hardening in Al-Cu-Mg-based alloys, is investigated. It is shown that current knowledge on the nanostucture and microstructure development during rapid hardening can be described without recourse to this alloy-specific term. Analysis of the kinetics of Cu-Mg co-clusters formation by DSC indicates that the formation of Cu-Mg co-cluster formation during a fast water quench can be sufficiently suppressed to cause substantial nucleation of co-clusters to occur in subsequent natural ageing and artificial ageing at low temperatures.
|Keywords:||precipitation, Al-Cu-Mg, cluster, co-cluster, GPB zone, calorimetry, 3DAP, nucleation|
|Subjects:||T Technology > TN Mining engineering. Metallurgy
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
|Date Deposited:||26 Jun 2006|
|Last Modified:||28 Jun 2012 10:28|
|Contributors:||Starink, M.J. (Author)
Cerezo, A. (Author)
Yan, J.L. (Author)
Gao, N. (Author)
|Contact Email Address:||firstname.lastname@example.org|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
Available Versions of this Item
Reply to the Comments on “Room-temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield-strength development.”. (deposited 12 Jul 2006)
- Reply to the comments on “Room-temperature precipitation in quenched Al-Cu-Mg alloys: a model for the reaction kinetics and yield-strength development”. (deposited 26 Jun 2006) [Currently Displayed]
Actions (login required)