Microstructural Characterization of Pure Titanium Treated by Laser Surface Treatment Under Different Processing Parameters

Huang, Chen Hung; Tu, Jian; Wen, Yuren; Hu, Zhi; Zhou, Zhiming; Dong, Anping; Zhu, Guoliang

doi:10.1007/s40195-017-0608-1

Cited by 4 publications

(1 citation statement)

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“…In work [7] Poulon-Quintin et al investigated the effect of Nd:YAG laser surface treatment of cast titanium on the microstructure and mechanical properties and they found significant enhancement of the mechanical properties, while a higher tensile strength and higher values of elastic modulus of titanium were also obtained. Can Huang et al [19] analysed the microstructural evolution of pure titanium treated by a Nd:YAG laser under different processing parameters and observed three distinctly different types of microstructure from the surface to the substrate in Ti samples, namely phase transformation and solidification microstructure in the melting zone, insufficient grain recrystallization with residual martensitic plates in the heat-affected zone, and a fully recrystallized microstructure in the base metal. The authors showed that the material in the melting zone had the highest hardness, while the material in the heat affected zone had the lowest hardness value due to the insufficiently recrystallized grains.…”

Section: Introductionmentioning

confidence: 99%

Microstructural aspects of laser surface treatment of commercially pure titanium

Iwaszko¹

2020

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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.

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Section: Introductionmentioning

confidence: 99%