Effect of laser shock peening process on the tensile properties of TC4 titanium alloy welds

Hongyu Quan; Pengkai Liu; Wentai Ouyang; Liming Yuan; Wensheng Luo; Xiu Qin; Junke Jiao; Liyuan Sheng; Wenwu Zhang

doi:10.1117/12.2655582

16 December 2022 Effect of laser shock peening process on the tensile properties of TC4 titanium alloy welds

Hongyu Quan, Pengkai Liu, Wentai Ouyang, Liming Yuan, Wensheng Luo, Xiu Qin, Junke Jiao, Liyuan Sheng, Wenwu Zhang

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 125010E (2022) https://doi.org/10.1117/12.2655582
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

TC4 (Ti-6Al-4V) is a comprehensive metal material with excellent ductility, low density, high specific strength, and a series of advantages such as excellent toughness and weldability, so it is widely used in the aerospace industry. Due to defects such as porosity in the welding process and exposure to alternating loads, welded components of titanium alloys in the aerospace industry become the most vulnerable parts and are extremely susceptible to failure and fracture. In this paper, a single-sided sequential laser impact strengthening process is used to treating the laser welds of TC4 titanium alloy cold rolled parts to investigating the tensile properties of the laser welded welds before and after the process. By observing the tensile fracture by SEM, measuring the microhardness by Vickers hardness tester, and measuring the physical phase by XRD diffractometer, the results of these data were combined to analyze the strengthening mechanism of this laser shock peening process on the laser welds of TC4 titanium alloy. The experimental results show that after the surface strengthening process, the tensile strength and surface hardness of TC4 laser welds are improved compared with those before ¹the treatment. The analysis shows that the high residual compressive stress layer and grain refinement caused by laser shock peening are the reasons for the improvement of mechanical properties of materials.

Citation Download Citation

Hongyu Quan, Pengkai Liu, Wentai Ouyang, Liming Yuan, Wensheng Luo, Xiu Qin, Junke Jiao, Liyuan Sheng, and Wenwu Zhang "Effect of laser shock peening process on the tensile properties of TC4 titanium alloy welds", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 125010E (16 December 2022); https://doi.org/10.1117/12.2655582

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Titanium

Alloys

Laser welding

Metals

Technology

Laser processing

Deformation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years