Welding Characteristic Evaluation of GMAW and Laser Cladding for the Gas Turbine 1st Blade

Hyung Ick Kim; Hong Sun Park; Jae Mean Koo; Sung Ho Yang; Moon Young Kim; Chang Sung Seok

doi:10.4028/www.scientific.net/KEM.353-358.519

Paper Titles

Microstructure and Strength of Oxidation-Bonded Porous Silicon Nitride Ceramics
p.503

Microstructure and High Temperature Stress Rupture Properties of Ru-Containing Directionally Solidified Ni-Base Superalloy
p.507

Microstructural Evolution during Tensile Creep of a Single-Crystal Nickel-Base Superalloy
p.511

Effect of Original Microstructure on the Hot Compression Behavior of Superalloy 718
p.515

Welding Characteristic Evaluation of GMAW and Laser Cladding for the Gas Turbine 1st Blade
p.519

A Study on the Degradation of the Superalloy Inconel 718 Using Ultrasonic Technique
p.523

Characteristics of High Temperature Tensile Properties and Residual Stresses in Welded Joints of the SM570-TMCP Steel
p.527

Creep Model Based on Theta Projection and Omega Method for Predicting the Creep Behavior of Alloy
p.533

Segregation of Alloying Elements of Directionally Solidified Nickel Based Superalloy CM247LC during Creep Degradation Process
p.537

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Welding Characteristic Evaluation of GMAW and Laser Cladding for the Gas Turbine 1st Blade

Abstract:

The advancement in superalloys permits the hot gas path components to operate for thousands of hours under severe centrifugal, thermal and vibratory stresses. The blade of a gas turbine must withstand the most severe condition combined of temperature, stress, and environment. After a long operation, the damaged blades of a gas turbine used are welded for build-up and repaired. We analyzed and compared the mechanical properties of GMAW(Gas Metal Arc Welding), a manual welding method, a laser cladding method, and an automatic welding method under research and development.