ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Microstructural Evolution during Laser Resolidification of Fe-18 At. Pct Ge Alloy

Biswas, Krishanu and Chattopadhyay, K (2010) Microstructural Evolution during Laser Resolidification of Fe-18 At. Pct Ge Alloy. In: Mallurgical materials Transactions A, 41A (3). pp. 574-582.

[img] PDF
Alloy.pdf - Published Version
Restricted to Registered users only

Download (684Kb) | Request a copy
Official URL: http://www.springerlink.com/content/b26x27115hl4l6...

Abstract

The technique of laser resolidification has been used to study the rapid solidification behavior of concentrated Fe-18 at. pct Ge alloy. The microstructural evolution has been studied as a function of scanning rate of laser beam. Scanning electron microscopy (SEM) reveals the formation of a two-layer (designated as "A" and "B") microstructure in the remelted pool. The A layer shows a band consisting of a network of interconnected channels and walls, quite similar to cell walls. The B layer shows dendritic growth. Transmission electron microscopic observations reveal the formation of bcc alpha-FeGe in the B layer. Laser melting has been found to play an important role in formation of the A layer. Microstructural evolution in B has been analyzed using the competitive growth criterion, and formation of bcc alpha-FeGe has been rationalized in the remelted layers.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 13 Jul 2010 09:20
Last Modified: 19 Sep 2010 06:10
URI: http://eprints.iisc.ernet.in/id/eprint/28949

Actions (login required)

View Item View Item