Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)

Formation Mechanisms of Electron Beam Processed Surface Textures on Titanium Alloys

Authors
Kai Li, Pengfei Fu, Bing Wu, Jinwei Li, Daibin Tang
Corresponding Author
Kai Li
Available Online April 2017.
DOI
10.2991/icmmse-17.2017.63How to use a DOI?
Keywords
Electronbeam, Surface textures, Titanium alloy, Formation mechanism, Near-surface microstructure.
Abstract

The electron beam processed surface textures on a Ti-6Al-4V ally and a Ti-4Al-1.5Mn alloy were examined by using advanced optical microscopy for surface morphology analysis and near-surface microstructure observation. It showed that the as-resulted non-smooth surface was characterized by parallel ridges and grooves, with height and spacing closely related to processing parameters. The ridges displayed successive scale shaped features while the valley of grooves presented V shaped ripples. Based on a comprehensive observation, the formation mechanisms of such electron beam processed surface textures were discussed. In addition, the near-surface region of electron beam processed titanium alloys were characterized by fusion zone, heat affected zone and base metal from the outermost surface to the underlying base metal. The fusion zone was dominated by martensite phase generated in a high cooling rate. A heat affect zone was sandwiched between fusion zone and the underlying base metal, with different microstructural features compared to both fusion zone and base metal. The microstructure gradient is closely related to the heat distribution from the high energy electron beam

Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
Series
Advances in Engineering Research
Publication Date
April 2017
ISBN
978-94-6252-370-8
ISSN
2352-5401
DOI
10.2991/icmmse-17.2017.63How to use a DOI?
Copyright
© 2017, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Kai Li
AU  - Pengfei Fu
AU  - Bing Wu
AU  - Jinwei Li
AU  - Daibin Tang
PY  - 2017/04
DA  - 2017/04
TI  - Formation Mechanisms of Electron Beam Processed Surface Textures on Titanium Alloys
BT  - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
PB  - Atlantis Press
SP  - 379
EP  - 384
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-17.2017.63
DO  - 10.2991/icmmse-17.2017.63
ID  - Li2017/04
ER  -