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Characteristics of Microstructure of Hardfacing Layer of Stellite 6 with Mo Addition  

신종철 (한국과학기술연구원)
김재수 (한국과학기술연구원)
이덕열 (고려대학교)
양재웅 (대진대학교)
윤진국 (한국과학기술연구원)
노대호 (한국과학기술연구원)
이종권 (한국과학기술연구원)
Publication Information
Journal of the Korean institute of surface engineering / v.35, no.4, 2002 , pp. 241-248 More about this Journal
Abstract
Hardfacing layers of Stellite 6 alloy with different molybdenum content are deposited on AISI 1045 carbon steel using plasma transferred arc welding (PTAW). The properties of the hardfacing layer are investigated in order to clarify the effect of molybdenum addition to the cobalt-base alloy. With an increase in molybdenum contents, the size of Cr-rich carbides in the interdendritic region is abruptly refined, but volume fraction of the carbide slightly increases. Also, with an increase of Mo, $M_{6}$ C type carbides are formed instead of Cr-rich $M_{7}$ $C_{3}$ type carbided, and this microstructural change enhanced the mechanical properties of Stellite 6 alloy.
Keywords
Stellite; PTAW; molybdenum;
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