Laser beam welding of titanium – A comparison of CO2 and fiber laser for potential aerospace applications

2008 ◽  
Author(s):  
Steffen Mueller ◽  
Craig Bratt ◽  
Peter Mueller ◽  
Jonathan Cuddy ◽  
Kartik Shankar
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Aerospace Applications

Modern fiber laser beam welding of the newly-designed precipitation-strengthened nickel-base superalloys

2014 ◽  
Vol 57 ◽  
pp. 12-20 ◽  
Author(s):  
Homam Naffakh Moosavy ◽  
Mohammad-Reza Aboutalebi ◽  
Seyed Hossein Seyedein ◽  
Massoud Goodarzi ◽  
Meisam Khodabakhshi ◽  
...  
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Nickel Base Superalloys ◽  
Nickel Base

Fiber Laser Beam Welding of Ti-6242 - Effect of Processing Parameters on Microstructural and Mechanical Properties

2016 ◽  
Vol 879 ◽  
pp. 903-908 ◽  
Author(s):  
Nikolai Kashaev ◽  
Dmitry Pugachev ◽  
Stefan Riekehr ◽  
Volker Ventzke
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Base Material ◽  
Butt Joint ◽  
Beam Power ◽  
Focus Position ◽  
Laser Beam Power ◽  
Advance Speed

The present work investigates the effects of laser beam power, focus position and advance speed on the geometry, microstructure and mechanical properties of fiber laser beam welded Ti-6Al-2Sn-4Zr-2Mo (denoted as Ti-6242) butt joints used for high temperature applications. Detailed microstructural and mechanical studies were performed on welds produced using optimized parameters (a laser beam power of 5 kW, a focus position of 0.0 mm and an advance speed of 6.2 m/min). The Ti-6242 base material is characterized by a globular (α+β) microstructure. The heat input during laser beam welding led to the formation of a martensitic α’-phase fusion zone. The heat affected zone consisted of globular grains and acicular crystallites. These local transformations were connected with a change in the micro-texture, average grain size and β-phase content. Furthermore, the microhardness increased from 330 HV 0.3 to 450 HV 0.3 due to the martensitic transformation. The mechanical behavior of the laser beam welded Ti-6242 butt joint loaded in tension was determined by the properties of the Ti-6242 base material. The local increase in hardness provided a shielding effect that protected the Ti-6242 butt joint against mechanical damage.

Laser Welding ATI 425® Alloy

2010 ◽  
Vol 436 ◽  
pp. 205-211
Author(s):  
Paul Edwards ◽  
Todd Morton ◽  
Gregory L. Ramsey
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Fiber Laser ◽  
Lower Cost ◽  
Laser Beam Welding ◽  
Butt Joints ◽  
Hardness Increase ◽  
Near Net Shape ◽  
Metal Properties ◽  
Structural Solutions

Laser Beam Welding of ATI 425® Alloy was performed on 2.5 mm thick butt joints. This new alloy could be used in place of standard Ti-6Al-4V for a variety of lower-cost structural solutions. Demonstration of its fusion weldability with laser welding is of particular interest because it is a near-net- shape process, capable of high welding speeds, which will further enable lower cost manufacturing options. It was found that ATI 425® Alloy could be successfully welded using a fiber laser at speeds over 3 m/min. Microstructural, microhardness and tensile property evaluations were performed on the resulting welds. It was found that there was a 15% hardness increase in the weld and the strength of the joints was within 2% of base metal properties.

A fuzzy logic-based prediction model for fracture force using low-power fiber laser beam welding

2017 ◽  
Vol 91 (9-12) ◽  
pp. 3603-3610 ◽  
Author(s):  
Shamini Janasekaran ◽  
Farazila Yusof ◽  
Harizam Mohd Zin ◽  
Mohd Fadzil Jamaludin ◽  
Mohd Hamdi Abdul Shukor
Keyword(s):  
Fuzzy Logic ◽  
Laser Beam ◽  
Low Power ◽  
Prediction Model ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Fracture Force

scholarly journals Fiber Laser Beam Welding Between Niobium and Titanium

2020 ◽  
Vol 4 (1) ◽  
pp. 21-25
Author(s):  
Rafael Humberto de Mota Siqueira ◽  
Isabela Atilio ◽  
Caroline Cristine de Andrade Ferreira ◽  
Sheila Medeiros de Carvalho ◽  
Milton Sergio Fernandes de Lima
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding
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