[Kovove materialy - Metallic materials]
    Mon - April 22, 2024 - 05:55 No. of hits : 1743023 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 57 (2019), Issue 1

Microstructural aspects of laser surface treatment of commercially pure titanium
IWASZKO, J.
vol. 57 (2019), no. 1, pp. 11 - 18
DOI: 10.4149/km_2019_1_11

Abstract
Commercially pure (CP) titanium was subjected to cw-CO2 laser surface treatment. The treatment was carried out using a side-by-side dual laser beam. The initial and surface treated materials were subjected to structural and microstructural examination. It was found that the microstructure in the laser treated zone changed from an α-phase present in the non-remelted material to martensite α’ as a consequence of the very high rates of cooling. An increase in the diffraction reflections originating from the (101) titanium plane was observed in the remelted sample. Despite the fact the laser treatment was conducted in a protective gas shield, limited oxidation occurring due to the high reactivity of titanium was observed. Analysis of the remelting parameters in connection with the macroscopic evaluation and microstructural changes in the surface layer allowed the relationships facilitating the shaping of the melting zone geometry, as well as the scope of microstructural changes to be determined.

Key words
CP titanium, laser treatment, microstructure characterization

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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