Heat Treatment of Friction Surfaced Steel-Aluminum Couple

Abstract:

Friction surfacing is a solid state process and it is amenable for deposition of aluminum on steel. In this investigation, the mild steel surface was coated with a layer of aluminum using friction surfacing route. The aluminum thickness was in the range of 40-50 μm. It was followed by a heat treatment step to convert aluminum layer in to an aluminide layer. Heat treatment was done in open atmosphere at 700 °C for 2 hours. Microstuctural analysis showed that the aluminide layer is mainly made of Fe₂Al₅ and Fe₄Al₁₃, FeAl and Fe₃Al are minor in fraction. Formation of Fe₂Al₅ is discussed. The aluminide layer also has some amount of porosities.

• Periodical: Materials Science Forum (Volumes 830-831)
• Pages: 135-138
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.830-831.135
• Online since: September 2015
• Authors: K. Udaya Bhat, Nithin H.S., Suma Bhat, Sudeendran Sudeendran
• Keywords: Aluminides, Friction Surfacing, Heat Treatment

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