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Surface modification of powder metallurgy components with a direct diode laser
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Barnes, Stuart, Nash, Michael J. and Kwok, Y. K.. (2003) Surface modification of powder metallurgy components with a direct diode laser. Journal of Engineering Materials and Technology, Volume 125 (Number 4). pp. 372-377. ISSN 0094-4289
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Official URL: http://dx.doi.org/10.1115/1.1605111
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) |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||
| Journal or Publication Title: | Journal of Engineering Materials and Technology | ||||
| Publisher: | ASME International | ||||
| ISSN: | 0094-4289 | ||||
| Official Date: | October 2003 | ||||
| Dates: |
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| Volume: | Volume 125 | ||||
| Number: | Number 4 | ||||
| Number of Pages: | 6 | ||||
| Page Range: | pp. 372-377 | ||||
| Identification Number: | 10.1115/1.1605111 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Version or Related Resource: | Barnes, S., Nash, M. J., Kwok, Y. K., “Surface Modification of Powder Metallurgy Components with a Direct Diode Laser”, Proc. of the ASME International Mechanical Engineering Congress and Exposition, Nov. 17-22, 2002, New Orleans, Louisiana, USA. | ||||
| URI: | http://wrap.warwick.ac.uk/id/eprint/9228 |
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