Open AccessInvestigations on the Mechanical and Tribological Performance of Nickel Aluminum Bronze- CaCO3 Composite
Author(s) -
Vijay Kumar Bhardwaj,
R. Saravanan,
M. Govindaraju,
R. Vaira Vignesh
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1059/1/012059
Subject(s) - materials science , intermetallic , ultimate tensile strength , bronze , metallurgy , composite number , alloy , microstructure , tribology , aluminium , nickel , casting , phase (matter) , composite material , chemistry , organic chemistry
In the present work, commercially available Nickel Aluminum Bronze (NAB) alloy was composited with CaCO3 through casting route. The developed composite was characterized for microstructure, micro hardness, tensile strength (room temperature and high temperature), and wear rate. The results indicate an improvement in tensile strength by 10%, micro hardness by 2.5 times, and wear resistance by 29% than that of the as-received specimen. This is attributed to the reinforcement of CaCO 3 in NAB, which in turn resulted in refinement of the grains, reduction of the β’ -phase and preferential formation of intermetallic precipitates of κ-phases (κ II , κ III , and κ IV ).