Effects of Annealing on Microstructure and Mechanical Properties of Bulk Nanocrystalline Fe3Al Based Alloy with 10 Wt. % Mn Prepared by Aluminothermic Reaction

Abstract:

Microstructure and mechanical properties of bulk nanocrystalline Fe₃Al based alloy with 10 wt. % Mn prepared by aluminothermic reaction after annealing at 600, 800 and 1000°C for 8 h were investigated in order to gain insights in effects of annealing. Crystal structure of the alloy did not change and a fiber phase with enriched Mn appeared in the annealed alloy. Grain size of the alloy changed a little after annealing at 600°C but increased a lot after annealing at 800 and 1000°C. The annealed alloy had plasticity in compression at room temperature and the alloy annealed at 1000°C had yield strength of 782 MPa. The alloy without annealing has creep properties in compression at 800 and 1000°C and can be easily hot rolled to strip and sheet.

• Periodical: Advanced Materials Research (Volumes 236-238)
• Pages: 1939-1944
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.236-238.1939
• Online since: May 2011
• Authors: Pei Qing La, Xin Guo, Yang Yang, Chun Jie Cheng, Xue Feng Lu, Yu Peng Wei
• Keywords: Annealing, Iron Aluminide (Based on Fe₃Al), Nanocrystalline

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