Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V
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...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-11-01
|
Series: | Metals |
Subjects: | |
Online Access: | https://www.mdpi.com/2075-4701/10/11/1504 |
id |
doaj-7727b17105ea4526b79332dbe702d28e |
---|---|
record_format |
Article |
spelling |
doaj-7727b17105ea4526b79332dbe702d28e2020-11-25T04:04:39ZengMDPI AGMetals2075-47012020-11-01101504150410.3390/met10111504Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4VMarjetka Conradi0Aleksandra Kocijan1Damjan Klobčar2Matjaž Godec3Institute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, SloveniaInstitute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, SloveniaFaculty of Mechanical Engineering, University of Ljubljana, Aškerčeva 6, 1000 Ljubljana, SloveniaInstitute of Metals and Technology, Lepi pot 11, 1000 Ljubljana, SloveniaWe 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.https://www.mdpi.com/2075-4701/10/11/1504surface textureTi-6Al-4V alloymicrostructurewettabilitycorrosion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marjetka Conradi Aleksandra Kocijan Damjan Klobčar Matjaž Godec |
spellingShingle |
Marjetka Conradi Aleksandra Kocijan Damjan Klobčar Matjaž Godec Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V Metals surface texture Ti-6Al-4V alloy microstructure wettability corrosion |
author_facet |
Marjetka Conradi Aleksandra Kocijan Damjan Klobčar Matjaž Godec |
author_sort |
Marjetka Conradi |
title |
Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V |
title_short |
Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V |
title_full |
Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V |
title_fullStr |
Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V |
title_full_unstemmed |
Influence of Laser Texturing on Microstructure, Surface and Corrosion Properties of Ti-6Al-4V |
title_sort |
influence of laser texturing on microstructure, surface and corrosion properties of ti-6al-4v |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2020-11-01 |
description |
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. |
topic |
surface texture Ti-6Al-4V alloy microstructure wettability corrosion |
url |
https://www.mdpi.com/2075-4701/10/11/1504 |
work_keys_str_mv |
AT marjetkaconradi influenceoflasertexturingonmicrostructuresurfaceandcorrosionpropertiesofti6al4v AT aleksandrakocijan influenceoflasertexturingonmicrostructuresurfaceandcorrosionpropertiesofti6al4v AT damjanklobcar influenceoflasertexturingonmicrostructuresurfaceandcorrosionpropertiesofti6al4v AT matjazgodec influenceoflasertexturingonmicrostructuresurfaceandcorrosionpropertiesofti6al4v |
_version_ |
1724435819685478400 |