Laser Surface Engineering of Metallic Components

Majumdar, J Dutta and Manna, I (2002) Laser Surface Engineering of Metallic Components. In: Proceedings of Seminar on Resurgence of Metallic Materials the Current Scenario (ROMM-2002), 24-25, October 2002, National Metallurgical Laboratory (CSIR), Jamshedpur.



The engineering solution to improve the surface dependent properties like wear, corrosion and oxidation resistance involves tailoring the surface composition and/or micro-structure of the near-surface region of a component without affecting the bulk. This may be achieved, using a high power laser beam as a source of heat, by surface hardening, melting, alloying and cladding. Fast heat-ing /cooling rate (104-1011 K/s), very high thermal grad-ient(106-108 K/m)and ultra-rapid resolidification veloc-ity (1-30 m/s) are the characteristics of this process which often develop exotic microstructures and composit-ions having large extension of solid solubility and meta-stable or even amorphous phases in the surface. This paper gives a brief review of the present status and future scope of laser assisted surface engineering with parti-cular reference to the authors' work.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Corrosion; oxidation; friction; fatigue
Divisions:Metal Extraction and Forming
ID Code:4213
Deposited By:Sahu A K
Deposited On:04 Nov 2011 13:50
Last Modified:12 Dec 2011 17:40
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