Open AccessEffect of argon flow rate and standoff distance on the microstructure and wear behaviour of WC-CoCr TIG cladding
Author(s) -
Jasbir Singh,
Lalit Thakur,
Surjit Angra
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1240/1/012162
Subject(s) - materials science , cladding (metalworking) , gas tungsten arc welding , tungsten carbide , microstructure , tungsten , metallurgy , argon , abrasive , composite material , extrusion , inert gas , tribometer , carbide , tribology , welding , arc welding , physics , atomic physics
This study examines the micro-hardness and abrasive wear resistance of WC-CoCr cladding produced by tungsten inert gas (TIG) welding process. The effect of argon flow rate and standoff distance on the microstructure and properties of the cladding was also investigated. The morphology of WC-CoCr powder and its corresponding claddings was examined by FE- SEM analysis. The tribological behaviour of cladding was analysed by using pin-on-disc wear tribometer. High hardness and wear resistance were observed at higher values of standoff distance and argon flow rate. Wear in the cladding is mainly due to pull out of tungsten carbide particles along with plastic flow caused by yielding and extrusion of CoCr binder.