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Updated: Jun 6, 2026

Processing of Bulk Nanocrystalline Metals at the US Army Research Laboratory
Published on: March 7, 2018
Structural evolution and grain growth kinetics of the mechanically alloyed Fe50Al50 during heat treatment
Rong Ren1, Yucheng Wu, Wenming Tang
1School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, PR China.
Abstract:
Nanocrystalline FeAl powder is synthesized by subsequent heat treating the Fe50Al50 (at.%) alloy prepared by mechanical alloying. During annealing the milled FeAl powder, the grain growth of B2-FeAl occurs with the order transformation from Fe(Al) to B2-FeAl. The activation energy for the nanocrystalline FeAl growth is calculated to be 534.9 kJ/mol, according to the kinetics theory of nanocrystalline growth. The grain growth of FeAl is significantly inhibited especially at elevated temperature.
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