TY - JOUR
T1 - Synergistic effects of ultrasonic surface rolling and multilayer coatings on hot salt corrosion fatigue behavior of TC11 alloy
AU - Zhou, Kai
AU - Liu, Daoxin
AU - Zhang, Xiaohua
AU - Liu, Yanjie
AU - Li, Mengyao
AU - Li, Xingchen
AU - Wu, Junnan
AU - Yang, Zhiqiang
N1 - Publisher Copyright:
© 2026 Elsevier Ltd.
PY - 2026/9
Y1 - 2026/9
N2 - The underlying mechanisms of a sequential combined treatment—combining ultrasonic surface rolling process (USRP) pretreatment with TiAlTaSiN/TiAlTaSi multilayer coating—on the hot salt corrosion fatigue (HSCF) properties of TC11 alloy are explored. The sequential combined treated sample has superior HSCF resistance, with an HSCF limit 35.9% higher than the untreated substrate and 2.4% higher than the substrate without NaCl film. The diffusion of corrosive species is effectively inhibited by the multilayer coating, which consequently suppresses hot salt corrosion and delays the initiation of fatigue cracks. Meanwhile, the double nanocrystal interface formed by the USRP-induced nanograined surface and the nanocrystalline Ti transition layer promotes coordinated deformation between the coating and substrate under cyclic loading. In addition, the stabilized compressive residual stress field and the strength-toughness matched structure further inhibit crack propagation. These synergistic effects collectively improve HSCF resistance of the TC11 alloy.
AB - The underlying mechanisms of a sequential combined treatment—combining ultrasonic surface rolling process (USRP) pretreatment with TiAlTaSiN/TiAlTaSi multilayer coating—on the hot salt corrosion fatigue (HSCF) properties of TC11 alloy are explored. The sequential combined treated sample has superior HSCF resistance, with an HSCF limit 35.9% higher than the untreated substrate and 2.4% higher than the substrate without NaCl film. The diffusion of corrosive species is effectively inhibited by the multilayer coating, which consequently suppresses hot salt corrosion and delays the initiation of fatigue cracks. Meanwhile, the double nanocrystal interface formed by the USRP-induced nanograined surface and the nanocrystalline Ti transition layer promotes coordinated deformation between the coating and substrate under cyclic loading. In addition, the stabilized compressive residual stress field and the strength-toughness matched structure further inhibit crack propagation. These synergistic effects collectively improve HSCF resistance of the TC11 alloy.
KW - Double nanocrystalinterface
KW - Hot salt corrosion fatigue
KW - Strength-toughness matching
KW - TiAlTaSiN/TiAlTaSi multilayer coatings
KW - Ultrasonic surface rolling process
UR - https://www.scopus.com/pages/publications/105036589817
U2 - 10.1016/j.ijfatigue.2026.109685
DO - 10.1016/j.ijfatigue.2026.109685
M3 - 文章
AN - SCOPUS:105036589817
SN - 0142-1123
VL - 210
JO - International Journal of Fatigue
JF - International Journal of Fatigue
M1 - 109685
ER -