Laser Butt Welding of Thin Ti6Al4V Sheets: Effects of Welding Parameters

Journal of Composites Science

Togo Shinonaga¹  Yasuhiro Okamoto¹  Martin Maina²  Tien-Chien Jen³  Peter Omoniyi³  Esther Akinlabi³  Rasheedat Mahamood³  Nana Arthur⁴  Samuel Skhosane⁴  Sisa Pityana⁴ 

[1] Department of Mechanical and Systems Engineering, Okayama University, Okayama 7008530, Japan;Department of Mechatronics Engineering, Jomo Kenyatta University of Agriculture and Technology, Nairobi 62000-00200, Kenya;Mechanical Engineering Science Department, University of Johannesburg, Johannesburg 2006, South Africa;National Laser Centre, CSIR, Pretoria 0002, South Africa;

关键词: fractography;    laser welding;    microhardness;    microstructure;    Ti6Al4V;   

DOI  :  10.3390/jcs5090246

来源: DOAJ

【 摘 要 】

Titanium and its alloys, particularly Ti6Al4V, which is widely utilized in the marine and aerospace industries, have played a vital role in different manufacturing industries. An efficient and cost-effective way of joining this metal is by laser welding. The effect of laser power and welding speed on the tensile, microhardness, and microstructure of Ti6Al4V alloy is investigated in this paper. Results show that the microhardness is highest at the fusion zone and reduces towards the base metal. The microstructure at the fusion zone shows a transformed needle-like lamellar α phase, with a martensitic α’ phase observed within the heat affected zone. Results of tensile tests show an improved tensile strength compared to the base metal.

【 授权许可】

Unknown