ISSN:
1572-8943
Keywords:
Al alloy
;
DSC
;
hardness measurement
;
peak-aging
;
precipitation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The precipitation of a supersaturated 6061 Al alloy reinforced with 10% SiCpwas monitored by using a DSC technique. DSC thermal curves were used to predict peak-aging temperatures and durations. The activation energies for precipitation of the β″ phase were found to increase with elevation of the solution temperature from 510 to 600°C, and hence the peak-aging temperature and duration also increased. Microstructural examination revealed an increase in grain size when a high solution temperature was applied. To compare predicted peak-aging temperatures and durations, hardness measurements were carried out after artificial aging. The studies revealed that peak-aging hardening was obtained when the aging temperatures and durations corresponded to about 95% to 97% precipitation of β″ phase from conversion plots.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1010196005237
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