Microstructural investigation of hardfacing weld deposit obtained from CrB paste

Journal Article · Mon May 01 00:00:00 EDT 1989 · Scripta Metallurgica; (USA)

DOI:https://doi.org/10.1016/0036-9748(89)90522-X· OSTI ID:6979176

Kr Ray, S; Sarker, B; Kr Bhattacharya, S ^[1]

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1. Research and Development Centre for Iron and Steel, Sail, Ranchi (IN)

Hardfacing weld deposits are used as a protective layer on engineering components and tools subjected to different modes of wear. Cheaper iron-based alloys with chromium and carbon or relatively expensive alloys with some niobium or titanium have long been used as standard hardfacing materials. In recent years boron has substituted the costlier alloying elements and the newly developed Fe-B-C alloys have shown encouraging results. The microstructure of the welded hardfacing deposit is one of the most important factors that determine its performance. The amount, size, distribution and hardness of the individual constituents play important roles in imparting the desired properties. Recently Colomonoy sweat on paste containing fine CrB particles (of about 12 {mu}m average size) suspended in an organic binder has been marketed as the new generation hardfacing material. A thin coating of the paste is applied on the component surface, allowed to dry and welded. The welded deposit has been found to offer good wear resistance in many industrial applications. This paper reports the microstructural investigation of the welded deposit obtained from this paste.

• OSTI ID: 6979176
• Journal Information: Scripta Metallurgica; (USA), Vol. 23:5; ISSN 0036-9748
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM ALLOYS
PROTECTIVE COATINGS
CHROMIUM BORIDES
MICROSTRUCTURE
IRON BASE ALLOYS
NIOBIUM ADDITIONS
SURFACE HARDENING
TITANIUM ADDITIONS
WELDING
ALLOYS
BORIDES
BORON COMPOUNDS
CHROMIUM COMPOUNDS
COATINGS
CRYSTAL STRUCTURE
FABRICATION
HARDENING
IRON ALLOYS
JOINING
NIOBIUM ALLOYS
SURFACE TREATMENTS
TITANIUM ALLOYS
TRANSITION ELEMENT COMPOUNDS
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties