Abstract
In order to improve the high-temperature wear resistance of white cast iron, a cermet powder layer mixed with Ni and/or Cr powder was inserted by molten 27 mass% Cr white cast iron. The microstructures of surface and vertical cross-section of the inserted layer were examined to investigate castability of the molten cast iron. High-temperature wear resistance of the inserted layer was examined by means of a high-temperature compressive impact fatigue test. The results obtained are as follows. (1) The inserted layer with 50 vol. % Ni powder or 25 vol. % Ni and 25 vol. % Cr powder shows satisfactory metallographic structure, though the inserted layer with 50 vol. % Cr powder includes some micro pores and voids. (2) The wear resistance decreases with increasing temperature for whole the inserted layers. The impact fatigue strength of the layer with 50 vol. % Cr powder is highest in whole the inserted layers at higher temperature side. (3) However, the inserted layer with 50 vol. % Cr powder shows many cracks connecting with the micro pores and voids after the impact fatigue test. Therefore, it is important to make an inserted layer without any micro pores and voids by using smaller sized cermet powder.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Society of Materials Engineering for Resources of Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
