ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
One of the challenges for the Aluminium industry is to reduce the costs and lead times of thedevelopment of novel alloys. This can be achieved by applying increasingly sophisticated modelsto predict the microstructures and properties of novel chemistries and processing routes. At CorusRD&T, several physically based microstructure models and one process model have beendeveloped and integrated into a Through Process Model (TPM). The TPM presented here isconstructed from microstructural sub-models that predict precipitation, work-hardening, recoveryand recrystallisation. Furthermore, there is a finite difference based process model that predicts thelocal process variables like strain, strain rate and temperature. The final sub-model translates thepredicted microstructures into product properties.In this paper the integrated model has been applied to the production chain of brazing sheet(AA3103) covering all steps from homogenisation to the braze cycle as applied by themanufacturers of for instance heat exchangers. The model predictions have been verified bycomparing them to the results of full-scale a plant trial. Microstructure and mechanical propertieswere experimentally characterized and predicted at various production steps. Due to the limitedspace, here, only the results of the through process modelling on microchemistry are presented.Nevertheless it can be concluded that the (fully predictive) results of the models compare well withthose found experimentally which opens up the option to use such models for alloy development
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.271.pdf
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