ISSN:
1432-0630
Keywords:
PACS61.80.Ba; 52.75.-d; 81.60.Bn
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract. Laser nitriding of Armco iron in nitrogen was studied for KrF-excimer-laser irradiation. The influence of the energy density and number of pulses on the nitrogen take-up and the nitride phases formed was investigated using Resonant Nuclear Reaction Analysis (RNRA) and Mössbauer spectroscopy. Besides the original $\alpha$ -iron, austenite $\gamma$ -Fe(N), martensite $\alpha'$ -Fe(N), $\varepsilon$ -Fe $_{2+x}$ N, and $\alpha''$ -Fe $_{16}$ N $_2$ , were identified. The fraction of the $\varepsilon$ -phase was found to increase with the number of pulses and the energy density. A threshold energy density of 1.8(2) J/cm $^2$ for the laser nitriding process was found.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01575086
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