STRENGTH AND DUCTILITY OF FORGED 1200 ALUMINUM ALLOY REINFORCED WITH STEEL PARTICLES

SO Adeosun; A Oyetunji; EI Akpan

doi:10.4314/njt.344.1000

STRENGTH AND DUCTILITY OF FORGED 1200 ALUMINUM ALLOY REINFORCED WITH STEEL PARTICLES

Authors

SO Adeosun DEPARTMENT OF METALLURGICAL AND MATERIALS ENGINEERING, UNIVERSITY OF LAGOS, LAGOS STATE, NIGERIA.
A Oyetunji DEPT OF METALLURGICAL AND MATERIALS ENGINEERING, FED. UNIV. OF TECHNOLOGY AKURE, ONDO STATE, NIGERIA
EI Akpan DEPT OF MATERIALS AND PRODUCTION ENGINEERING, AMBROSE ALLI UNIVERSITY, EKPOMA, EDO STATE, NIGERIA

DOI:

https://doi.org/10.4314/njt.344.1000

Keywords:

Aluminum alloy, annealing, ductility, strength, iron particle

Abstract

Strength and ductility responses of forged AA1200 aluminum alloy reinforced with steel particles have been studied. Steel particles of sizes 106, 181, 256, 362 and 512?m were separately added to the aluminum alloy to produced cylindrical shape samples, which were homogenized at 420⁰C for 10 hours, further processed through upset forging at 32⁰C and finally annealed at 470⁰C for 8 hours. Results show that forged composites with 106?m had a tensile strength of 280MPa and ductility of 1.75 after 10 percent reduction and subsequent annealing. With 50% reduction and fine-sized steel particles (512?m) in aluminum alloy, tensile strength dropped to 160MPa without significant decrease in ductility (1.7). Microstructure of cast samples show the presence of fine Fe particles at grain boundaries after annealing with most of the particles in solid solution. Al₃Fe and AlFeSi intermetallics were also present in the matrix with significant influence on the mechanical properties.

http://dx.doi.org/10.4314/njt.v34i4.7

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Issue

Vol. 34 No. 4 (2015)

Section

Chemical, Industrial, Materials, Mechanical, Metallurgical, Petroleum & Production Engineering

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How to Cite

STRENGTH AND DUCTILITY OF FORGED 1200 ALUMINUM ALLOY REINFORCED WITH STEEL PARTICLES. (2015). Nigerian Journal of Technology, 34(4), 710-715. https://doi.org/10.4314/njt.344.1000