RETRACTED ARTICLE: Comparative analysis of
solution treatment with short and long-term aging on mechanical, tribological, and
corrosion potential of Ti-6Al-4V alloy
摘要
This study examines the impact of solution treatment with both short and long-term aging on the Ti-6Al-4V (Grade 5) alloy's mechanical, wear, and corrosion properties. Following a solution treatment that lasted 60 min at 960 °C, the short-term aging (DHTS) treatment for 120 s at 550 °C was conducted. Long-term aging (DHTL) procedures involve aging an alloy for 300 min at 550 °C after the solution treatment. A ball-on-plate sliding wear testing equipment with Ti-6Al-4V alloy as the plate and an alumina ball as a pin was utilized. Open-circuit potential-time measurements and potentiodynamic polarization studies were employed to assess the corrosion potential behaviour in a 3.5% NaCl solution. The results reveal that the DHTS samples exhibit superior mechanical properties among the other samples. The hardness of the DHTS sample is 25.61% higher than that of the as-cast samples and 7.5% higher than that of the DHTL samples. The DHTS sample has a tensile strength of 23.26% greater and a tensile elongation of 36.32% lower than the as-cast alloy. The wear test findings show that the DHTS specimen exhibits the least wear. The DHTS specimen's wear rate is 3.4-folders lower than the as-cast alloy (ACT) and 1.6-folders inferior to the DHTL sample. The leading causes of the augmentation in mechanical and wear features of DHTS samples are the development of the α′-martensite phase upon quenching and the occurrence of a higher volume percentage of β-phase, which was maintained under DHTS conditions. The corrosion test reveals that the DHTS samples had greater corrosion resistance, as their icorr value was approximately 1.75-folders lower than the as-cast alloy and 1.3-folders lower than the DHTL sample.