Effect Of TiCN Reinforcement On The Tensile Properties Of Nickel Manufactured By Laser Powder Bed Fusion

Authors:

Polline Mwambe (Stellenbosch University, South Africa)
Natasha Sacks (Stellenbosch University, South Africa)
Johannes Pötschke (2Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Germany)

Abstract:

Pure nickel (Ni) is known for its low mechanical properties, which limits its range of applications. This study explored the possibility of improving the tensile properties of Ni through the addition of titanium carbonitride (TiCN) reinforcement using laser powder bed fusion. Horizontally built tensile specimens of 100wt% Ni and Ni-10wt% TiCN were tested according to ASTM E8|E8M-21. The Ni-10wt% TiCN samples had an ultimate tensile strength (UTS) of 751.65 MPa, a yield strength (YS) of 550.30 MPa and an elongation (EL) of 11.08 %. Compared to the pure Ni, this represents an increase of 112.31 % in UTS and 79.36 % in YS respectively with a reduction of only 4.15 % in EL. The findings demonstrate that the TiCN reinforcement enhanced the tensile properties of Ni while retaining a desirable ductility. Thus, there is potential for application of these materials where currently duranickel is used, for example spring contacts.

DOI:

https://doi.org/10.59499/EP256708008