Hybrid Laser-Arc Welding of X90 Pipeline Steel: Effect of Laser Power on Microstructure and Mechanical Properties

2018 ◽  
Vol 71 (10) ◽  
pp. 2487-2496 ◽  
Author(s):  
Mei Yang ◽  
Yang Liu ◽  
Junlei Zhang ◽  
Dong Xiang ◽  
Zhimin Zhou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Arc Welding ◽  
Laser Power ◽  
Pipeline Steel ◽  
Hybrid Laser Arc Welding ◽  
Microstructure And Mechanical Properties

Prediction of Microstructure and Mechanical Properties of Weld Metal in Hybrid Laser-Arc Welding

2015 ◽  
Vol 1120-1121 ◽  
pp. 1292-1296 ◽  
Author(s):  
Victor A. Karkhin ◽  
Pavel N. Homich ◽  
Sergei Yu. Ivanov ◽  
Vesselin Michailov ◽  
Oleg V. Panchenko
Keyword(s):  
Mechanical Properties ◽  
Inverse Problem ◽  
Weld Metal ◽  
Arc Welding ◽  
Data Input ◽  
Unknown Parameters ◽  
Hybrid Laser Arc Welding ◽  
Calculation Technique ◽  
Temperature Problem ◽  
Microstructure And Mechanical Properties

Calculation technique in order to reconstruct the 3D temperature field and predict the microstructure and mechanical properties of the weld metal in hybrid laser-arc welding is developed. The technique is based on the solution of the direct 3D temperature problem by a function-analytical method, the numerical solution of the inverse problem for the unknown parameters of a volume heat source, the employment of the known models for prediction of the microstructure and mechanical properties. The proposed calculation technique makes it possible to reduce considerably the total time for data input and solution. It is demonstrated with an example of butt hybrid laser-arc welding.

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