Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering

Residual stress analysis on titanium alloy TC4 by LSP

Authors
Junhong Liu, Shuo Sun, Rui Hu, Wei Wang, Yuntao Liu, Dongfeng Chen
Corresponding Author
Junhong Liu
Available Online November 2015.
DOI
https://doi.org/10.2991/icsmme-15.2015.12How to use a DOI?
Keywords
Laser Shock Peening, Residual Stress, TC4 Titanium Alloy, X-Ray Diffraction
Abstract
Laser shock peening (LSP) is a new technique to reinforce the surface of materials, and the fatigue strength, wear properties and residual stress corroding properties of metallic materials would be greatly improved by shock peening. The residual compressive stress distribution caused by LSP from the surface to 500 m below the surface of the titanium alloy TC4 were measured by X-ray stress analyzer. Results indicated that there was a large residual stress on the surface of the shocked material. When the power density was 3 GW/cm2, the residual compressive stress on the surface reached 650 MPa, and it decreased gradually with the depth increased. It maintained 300 MPa when the depth was 500 m. Effect of the power density on the residual compressive stress distribution was also investigated. As the power density increased, the residual compressive stress on the surface also increased. The fatigue resistance of titanium alloy TC4 would be greatly improved.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
2015 International Conference on Structural, Mechanical and Material Engineering
Part of series
Advances in Engineering Research
Publication Date
November 2015
ISBN
978-94-6252-144-5
ISSN
2352-5401
DOI
https://doi.org/10.2991/icsmme-15.2015.12How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Junhong Liu
AU  - Shuo Sun
AU  - Rui Hu
AU  - Wei Wang
AU  - Yuntao Liu
AU  - Dongfeng Chen
PY  - 2015/11
DA  - 2015/11
TI  - Residual stress analysis on titanium alloy TC4 by LSP
BT  - 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.12
DO  - https://doi.org/10.2991/icsmme-15.2015.12
ID  - Liu2015/11
ER  -