Effects of ion-implanted C on the microstructure and surface mechanical properties of Fe alloys implanted with Ti

• Published in: Applied physics letters 1984-09, Vol.45 (5), p.529-531
• Main Authors: FOLLSTAEDT, D. M, KNAPP, J. A, POPE, L. E, YOST, F. G, PICRAUX, S. T
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: structure, mechanical and thermal properties; Contact of materials. Friction. Wear; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Mechanical and acoustical properties of condensed matter; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Mechanical properties of solids; Metals, semimetals and alloys; Metals. Metallurgy; Physics; Specific materials; Tribology and hardness
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.95303

The microstructural and tribological effects of ion implanting C into Ti-implanted, Fe-based alloys are examined and compared to the influence of C introduced by vacuum carburization during Ti implantation alone. The amorphous surface alloy formed by Ti implantation of pure Fe increases in thickness when additional C is implanted at depths containing Ti but beyond the range of carburization. Pin-on-disc tests of 15-5 PH stainless steel show that implantation of both Ti and C reduces friction significantly under conditions where no reduction is obtained by Ti implantation alone; wear depths are also less when C is implanted. All available experimental results can be accounted for by consideration of the thickness and Ti concentration of the amorphous Fe-Ti-C alloy. The thicker amorphous layer on samples implanted with additional C extends tribological benefits to more severe wear regimes.