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JWJ > Volume 27(3); 2009 > Article
Journal of KWJS 2009 June;27(3) :80-84.
Published online July 6, 2009.
A Study on the Abrasive Wear Properties of the PTA Overlay Layers using the Super Alloy Powder
Young-Sik Kim, Young-Gook Choi, Chang-Hoon Lim, Jong-Do Kim



Correspondence:   Published online July 6, 2009
ABSTRACT
  The Plasma Transferred Arc (PTA) overlay welding method is lately introduced as one of the most useful surface overlay method of the engine component. In this paper, the overlay welding on the SNCrW heat resisting alloy was conducted by the PTA overlay welding process using the super alloy powder. The characteristics of the overlay layers were investigated through the metallurgical and abrasive test. Experimental results showed that the overlay on the SNCrW heat resisting alloy surface was successfully made without hot cracking. The friction wear characteristics of the Co-base Stellite 6 overlayer were most superior. However the abrasive wear characteristics were most inferior in the Co-base Stellite 6 overlayer.
Keywords: PTAW;SNCrW;Abrasive wear;Super alloy;Overlay
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