The results of laser transformation hardening trials on a medium carbon steel are described. A 2kW fast axial flow laser was used, producing a defocused beam with a conventional plano-convex lens and also an annular beam with an Axicon lens. Assessment of the hardened zones was made by examining the morphology and microstructure. Trends in the morphology of the hardened regions were predictable, but a variation in microstructure was observed that could not be related to the laser process parameters.
Topics
Chemical elements
REFERENCES
1.
2.
Jimbou
R
, Inagaki
M
and Tamamura
T
(November
1981
) ‘A Method for Laser Alloying and Transformation Hardening Using a Uniform Intensity Rectangular Beam
’ Proceedings of the First International Laser Processing Conference
, Anaheim, California, USA
. Laser Institute of America
, Toledo, Ohio, USA
.3.
Crafer
R C
(May
1978
) ‘Improved Welding Performance from a 2kW Fast Axial Flow CO2 laser Welding Machine
’. Advances in Welding Processes, Fourth International Conference
, Harrogate, England
. The Welding Institute
, Cambridge, England
, 267
–278
.4.
Steen
W M
and Courtney
C
(December
1979
) ‘Surface Heat Treatment of EN8 Steel Using a 2kW continuous wave CO2 Laser
’ Metals Technology
, 6
: 456
–462
.5.
Gnanamuthu
D S
(April
1979
) ‘Laser Surface Treatment
’ Applications of Lasers in Material Processing
, Washington DC, USA
, American Society for Metals, Ohio, USA 177
–211
.
This content is only available via PDF.
© 1984 Laser Institute of America.
1984
Laser Institute of America
Topics
Chemical elements
You do not currently have access to this content.