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Influence of laser texturing on microstructure, surface and corrosion properties of Ti-6Al-4V
ID
Conradi, Marjetka
(
Author
),
ID
Kocijan, Aleksandra
(
Author
),
ID
Klobčar, Damjan
(
Author
),
ID
Godec, Matjaž
(
Author
)
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https://www.mdpi.com/2075-4701/10/11/1504
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Abstract
We present the modification of Ti-6Al-4V surfaces with a diode end-pumped Nd:YVO4 laser by varying the distance between laser-produced micro(µ)-channels. We analyzed the influence of laser texturing on the morphology, microstructure, surface and corrosion properties of Ti-6Al-4V. SEM imaging reveals a characteristic µ-channel pattern with different scan line separations, while electron backscatter diffraction (EBSD) indicates that laser texturing with the current parameters influences the microstructure up to 2 µm deep with the most significant influence at the tips, where melting and rapid solidification occur. The Vickers hardness test indicates a surface hardening effect of the laser-textured compared to the as-received Ti-6Al-4V surfaces. The XPS analysis showed that the oxide layer on the laser-textured samples was considerably thicker compared to the as-received sample, at 20 and 7 nm, respectively. We observed that the wettability was strongly correlated with the scan line separation. The results show increased hydrophobicity with increased scan line separation. The corrosion resistance was improved for laser-textured surfaces compared to the as-received surface and increased with the scan line separation.
Language:
English
Keywords:
surface texture
,
Ti-6Al-4V alloy
,
microstructure
,
wettability
,
corrosion
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2020
Number of pages:
9 str.
Numbering:
Vol. 10, iss. 11, art. 1504
PID:
20.500.12556/RUL-134702
UDC:
620.1: 544.53:620.194
ISSN on article:
2075-4701
DOI:
10.3390/met10111504
COBISS.SI-ID:
37036803
Publication date in RUL:
27.01.2022
Views:
641
Downloads:
186
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Record is a part of a journal
Title:
Metals
Shortened title:
Metals
Publisher:
MDPI AG
ISSN:
2075-4701
COBISS.SI-ID:
15976214
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
11.11.2020
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0132
Name:
Fizika in kemija površin kovinskih materialov
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