Shin, Sang-Soo Kim, Hong-Kyu Lee, Jae-Chul Park, Ik-Min 2024-01-19T23:04:52Z 2024-01-19T23:04:52Z 2021-09-03 2018-03 1006-7191 https://pubs.kist.re.kr/handle/201004/121645 Despite the economy of material cost and excellent toughness of Cu-based amorphous alloys, especially Cu50Zr50, their poor corrosion resistance to a chloride medium limits their widespread applications. In this study, corrosion tests were performed on the Cu50Zr50 amorphous alloy with different degrees of short-range order, which were prepared by annealing below the glass transition temperature (T-g). It was found that the corrosion resistance of amorphous alloys is improved to a significant level when the alloys were heated below T-g. Calorimetric studies showed that thermally activated relaxation process of created disorder, which occurs during sub-T-g annealing, is responsible for the improvement in the corrosion resistance. Molecular dynamics simulations performed on the Cu-Zr amorphous alloys demonstrated that the relaxation process of the alloys is associated with the formation of energetically stable icosahedra and icosahedron-like structures. Our study highlights the effects of sub-T-g annealing on the improvement in the corrosion resistance of the amorphous alloys from the viewpoint the relaxation process of the short-range orders. English CHINESE ACAD SCIENCES, INST METAL RESEARCH BULK METALLIC-GLASS STRUCTURAL RELAXATION FRACTURE-BEHAVIOR FORMING ABILITY LOCAL ORDER VOLUME COMPOSITE STEEL FLOW Effect of Sub-T-g Annealing on the Corrosion Resistance of the Cu-Zr Amorphous Alloys Article 10.1007/s40195-017-0637-9 1 ACTA METALLURGICA SINICA-ENGLISH LETTERS, v.31, no.3, pp.273 - 280 ACTA METALLURGICA SINICA-ENGLISH LETTERS 31 3 273 280 scie scopus 000427710700006 2-s2.0-85042197246 Metallurgy & Metallurgical Engineering Metallurgy & Metallurgical Engineering Article BULK METALLIC-GLASS STRUCTURAL RELAXATION FRACTURE-BEHAVIOR FORMING ABILITY LOCAL ORDER VOLUME COMPOSITE STEEL FLOW Amorphous alloys Corrosion Annealing Molecular dynamics Electrochemical performance