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:
A supersaturated Al-0.3 wt.% Sc alloy was cold deformed by ECAP to an equivalent vonMises strain of 9.2 then pre-aged at 350 °C to generate a fine-grained alloy with an average grain sizeof 1 μm. The microstructure was highly resistant to grain coarsening at temperatures up to 500 °Cwith a detailed statistical analysis showing that the initial grain size distribution was very close tolognormal and, throughout annealing, remained lognormal and the normalized frequency distributionwas time/temperature invariant despite a moderate broadening of the size distribution. Thisbehaviour is largely similar to subgrain coarsening during recovery and grain growth afterrecrystallization. The homogeneous evolution of the microstructure during annealing, coupled withno appreciable change in texture, is also consistent with the advanced stages of continuousrecrystallization
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.729.pdf
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