Mechanical properties and microstructural evolution of in-service Inconel 718 superalloy repaired by linear friction welding

2016 ◽  
Vol 90 (5-8) ◽  
pp. 1931-1946 ◽  
Author(s):  
M. Smith ◽  
L. Bichler ◽  
J. Gholipour ◽  
P. Wanjara
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Friction Welding ◽  
Inconel 718 ◽  
Linear Friction Welding ◽  
Linear Friction ◽  
Inconel 718 Superalloy

Thermomechanical modelling for the linear friction welding process of Ni-based superalloy and verification

2020 ◽  
Vol 234 (5) ◽  
pp. 796-815
Author(s):  
SI Okeke ◽  
N Harrison ◽  
M Tong
Keyword(s):  
Melting Temperature ◽  
Process Parameters ◽  
Friction Welding ◽  
Inconel 718 ◽  
Computational Modelling ◽  
Welding Process ◽  
Model Verification ◽  
Linear Friction Welding ◽  
Inconel 718 Alloy ◽  
Linear Friction

This paper presents a fully coupled thermomechanical model for the linear friction welding process of Inconel-718 nickel-based superalloy by using the finite element method. Friction heat, plastic work, and contact formulation were taken into account for two deformable plastic bodies oscillating relative to each other under large compressive force. The modelling results of the thermal history at the weldline interface and thermal field at a distance away from the rubbing surfaces were compared to instrumented data sourced from related publications for model verification. Optimal linear friction welding process parameters were identified via comparison of weld temperature to the liquidus temperature of Inconel-718 alloy. Comparison of interface temperature showed a consistent range of values above the solidus melting temperature (1250 ℃) and below the liquidus melting temperature (1360 ℃) of Inconel-718 alloy. For the first time, a visible linear friction welding process window is identified using a thermomechanical computational modelling method. Through computational modelling, the influence of welding process parameters on the heat transfer and deformation of weld was systematically investigated.

Linear Friction Welding of a Commercial Aluminum Alloy

2016 ◽  
Vol 870 ◽  
pp. 608-613
Author(s):  
F.F. Musin ◽  
A.Y. Medvedev ◽  
B.O. Bolshakov
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Friction Welding ◽  
Solid Phase ◽  
Ingot Metallurgy ◽  
Linear Friction Welding ◽  
Welding Joint ◽  
Microstructure Transformation ◽  
Linear Friction ◽  
Phase Compound

The mechanical properties and microstructure of a solid-phase compound produced by linear friction welding (LFW) of commercial Al-4.4%Cu-0.5%Mg-0.4%Mn-0.5%Ag alloy have been studied. The samples of Al-Cu-Mg-Ag alloy were produced by ingot metallurgy and subjected to thermomechanical treatment to get different initial microstructures. It has been shown that the LFW of two rectangular-shaped samples with different microstructures enabled forming a well-done welding joint without macroscopic defects. The LFW samples have shown high mechanical properties. Strength has reached 452 MPa, and plasticity has become not less 15%. The microstructure transformation in the welding joint during plastic deformation and deformation heating at LFW is discussed.

scholarly journals Microstructural evolution in linear friction welding process for Ti–6Al–4V alloy and its FEM analysis

2018 ◽  
Vol 68 (10) ◽  
pp. 544-551
Author(s):  
Hiroaki Matsumoto ◽  
Gen Yamane ◽  
Tomomichi Ozaki ◽  
Koji Nezaki ◽  
Takahiko Shinohara
Keyword(s):  
Microstructural Evolution ◽  
Friction Welding ◽  
Welding Process ◽  
Fem Analysis ◽  
Linear Friction Welding ◽  
Linear Friction
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