Sintering and mechanical properties of mechanically alloyed Fe–Al–(B) nanostructures

• Published in: Journal of alloys and compounds 2010-04, Vol.496 (1), p.699-702
• Main Authors: Izadi, S., Akbari, G.H., Janghorban, K.
• Format: Article
• Language: English
• Subjects: Aluminum base alloys; Applied sciences; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Ferrous alloys; Iron; Materials science; Mechanical alloying; Mechanical and acoustical properties of condensed matter; Mechanical properties; Mechanical properties of nanoscale materials; Metals. Metallurgy; Microhardness; Microstructure; Nanocomposites; Nanomaterials; Nanopowders; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Nanostructure; Nanostructured materials; Physics; Powder metallurgy. Composite materials; Production techniques; Sintering; Sintering (powder metallurgy); Structure of solids and liquids; crystallography; Technology; Transmission electron microscopy
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2010.02.177

Mechanical properties of Fe–50Al, Fe–49.5Al–1B, and Fe–47.5Al–5B (at.%) nanostructures prepared by mechanical alloying and subsequent sintering were evaluated. Sintering developed ordered Fe–Al–(B) intermetallic nanostructures, via a transformation from disordered solid solutions developed by mechanical alloying. The samples containing more boron showed higher microhardness and yield stress. By increasing the sintering temperature, the microhardness of pore-free zones of the nanostructured specimens decreased. However, the sintering temperature had no meaningful effect on the compressive yield stress. In addition, the fracture strain of the sintered materials increased by progression of sintering. The samples containing 1 at.% B showed more strain to fracture compared to the B-free and 5 at.% B samples.