UNSPECIFIED. (2003) Surface modification of powder metallurgy components with a direct diode laser. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 125 (4). pp. 372-377. ISSN 0094-4289

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Abstract

A 1200 W diode laser was used to modify the surface properties of a fully-sintered ferrous PM material. Two modifications were investigated; transformation hardening of selected areas and sealing of surface porosity by re-melting. The diode laser was used because the beam footprint is large (5 x 0.5 mm) and the wavelength short (0.94 mum). Processed samples were examined using metallographic and hardness testing techniques. Results indicated that hardness comparable to induction hardening could be achieved and re-melting could be controlled to seal porosity. Further work now needs to be undertaken to convert this demonstrated potential into a commercial reality.

Item Type:	Journal Article
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TA Engineering (General). Civil engineering (General)
Journal or Publication Title:	JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME
Publisher:	ASME-AMER SOC MECHANICAL ENG
ISSN:	0094-4289
Date:	October 2003
Volume:	125
Number:	4
Number of Pages:	6
Page Range:	pp. 372-377
Identification Number:	10.1115/1.1605111
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/9228

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