Research on Mechanical and Corrosion Properties of Ti-Microalloyed Biomedical Cobalt-Based Alloy

Autor: Qing Xuan Ran, Ya Ting Cao, Feng Wang, Xue Shan Xiao, Jun Li, Yu Lai Xu
Rok vydání: 2016
Předmět:
Zdroj: Materials Science Forum. 852:1168-1174
ISSN: 1662-9752
Popis: 0.15 wt. % Ti-microalloyed Co-28.5Cr-5.9Mo-0.27C alloy has been developed by examining the effect of solution and aging treatment on microstructure, mechanical and corrosion properties. The results showed that elongation of the cast specimen were lower than 8%, while reached 18% after solution-treated at 1220 °C for 4 h. Phase transformation from austenite to martensite was observed after aging at 800°C and the amount of transformed martensite increased with aging time. Polarization tests of the samples after solution and aging treatment were carried out in physiological saline at 37 °C, which showed a stable passive film formed on the surface and no apparent pitting phenomenon occurred on the specimens, which indicated that heat treatment has not significant influence on the corrosion resistance of Co-Cr-Mo-0.27C-0.15Ti alloy.
Databáze: OpenAIRE