Microstructure of aluminum-iron alloys subjected to severe plastic deformation

Journal Article · Tue Apr 14 00:00:00 EDT 1998 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(98)00073-6· OSTI ID:619499

Senkov, O N; Froes, F H ^[1]; Stolyarov, V V; Valiev, R Z ^[2]; Liu, J ^[3]

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1. Univ. of Idaho, Moscow, ID (United States)
2. Ufa State Aviation Technical Univ. (Russian Federation)
3. ALCOA Technical Center, Alcoa Center, PA (United States)

The present paper describes detailed experiments on structure and phase characterization carried out on aluminum-iron alloys after intense torsion straining. The equilibrium solubility of iron in the aluminum lattice at room temperature has been reported to be 0.025 at.%. Alloying of aluminum with iron can increase the high-temperature strength due to a dispersion of second-phase particles. This effect can be enhanced by increasing the solid solubility extension of iron in the aluminum matrix and producing non-equilibrium phases by techniques such as RS, MA or even a laser treatment. In the present work, the severe plastic deformation approach has been used to extend the iron solubility in aluminum and to produce a nano-grained structure in several Al-Fe alloys.

• OSTI ID: 619499
• Journal Information: Scripta Materialia, Vol. 38, Issue 10; Other Information: PBD: 14 Apr 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
IRON ALLOYS
MICROSTRUCTURE
DEFORMATION
SOLIDIFICATION
MILLING