Lee, Chan Soo Kim, Min Gyu Kim, Gyeung-Ho Kim, Ki-Tae Hwang, DaeYoun Kim, Hye Sung 2024-01-19T19:02:58Z 2024-01-19T19:02:58Z 2022-01-25 2019-10 1533-4880 https://pubs.kist.re.kr/handle/201004/119489 Although deformation and aging treatments of Cu-3 wt%Ti alloys dramatically enhance their mechanical properties, the corrosion behavior of ultra-fine grained (UFG) Cu-3 wt%Ti alloys produced by a combination of hot rolling and artificial aging has not been extensively explored yet. To bridge this gap, we herein probe the corrosion behavior of an UFG Cu-3 wt%Ti alloy produced by cold rolling and artificial aging, revealing that cast sample corrosion preferentially occurs around the beta-Cu4Ti phase. Compared to that of the coarse-grained Cu-3 wt%Ti alloy, the corrosion resistance of its UFG counterpart is remarkably higher, which is ascribed to the effects of grain refinement and enveloping between the alpha-Cu matrix and beta-Cu4Ti in the absence of pitting corrosion. The development of ultra-fine microstructure upon the introduction of severe deformation is shown to dramatically improve the corrosion resistance of aging-hardened Cu-3 wt%Ti alloys without sacrificing their mechanical properties. Finally, we demonstrate that solid solution treatment of the Cu-3 wt%Ti alloy results in serious mechanical property deterioration, even though the thus treated samples feature the lowest corrosion current density. English AMER SCIENTIFIC PUBLISHERS Corrosion Properties of Ultra-Fine-Grained Cu-3 wt%Ti Alloy Fabricated by Combination of Hot Rolling and Aging Treatment Article 10.1166/jnn.2019.17071 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.19, no.10, pp.6487 - 6492 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 19 10 6487 6492 N scie 000466046800084 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article PRECIPITATION SENSITIZATION Cu-3 wt%Ti Heat Treatment Cellular Structure Ultra-Fine Microstructure Corrosion