PSI - Issue 19

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

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Procedia Structural Integrity 19 (2019) 106–112

Fatigue Design 2019 High temperature fatigue properties of Oxide-Dispersion Strengthened platinum-10% rhodium alloy Akifumi Niwa a, *, Yukihito Akita a , Kandai Enomoto b , Rintaro Aoyama b , Hiroyuki Akebono b , Atsushi Sugeta b a AGC Inc., 1-1 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan b Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima-shi, Hiroshima 739-8527, Japan In general, the platinum alloy is used in glass production lines, due to an excellent corrosion resistance to melted glass at high temperature. On the other hand, the development of high quality glass is needed, because of wide use of glass application in recent years. So, Oxide-Dispersion-Strengthened platinum alloy is developed which had better fatigue properties than the conventional one. However, there are few researches about the fatigue properties in a practical environment with axial stress and bending stress. Therefore, in order to clarify fatigue properties and fracture mechanism of Oxide-Dispersion-Strengthened platinum-10% rhodium with dispersed zirconium oxide particles, bending fatigue test at 1400°C, fracture surface observation and internal cross-section observation were performed. As a result of the fatigue test, it was clarified that the tendency of fatigue life with axial stress depends on the times to failure rather than number of cycles to failure. Also, it was clarified that the intergranular fracture and void generation due to creep occurred under the condition of axial stress of 23.4MPa. Fatigue Design 2019 High temperature fatigue properties of Oxide-Dispersion Strengthened platinum-10% rhodium alloy Akifumi Niwa a, *, Yukihito Akita a , Kandai Enomoto b , Rintaro Aoyama b , Hiroyuki Akebono b , Atsushi Sugeta b a AGC Inc., 1-1 Suehiro-cho, Tsuru i-ku, Yokohama-shi, Kanagawa 230-0045, Japan b Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima-shi, Hiroshima 739-8527, Japan Abstract In general, the platinum alloy is used in glass production lines, due to an excellent corrosion resistance to melted lass at high temperature. On the other hand, the development of high quality glass is needed, because of wide use of glass application in recent years. So, Oxide-Dispersion-Strengthened platinum alloy is developed which had better fatigue properties than the conventional one. However, there are few researches about the fati e properties in a practical enviro ment with axial stress and bending stress. Therefore, in order to clarify fatigue properties and fracture mechanism of Oxide-Dispersion-Strengthened platinum-10% rhodium with dispersed zirconium oxide particles, bending fatigue test at 1400°C, fracture surface observation and internal cross-section observatio were performed. As a result of the fatigue test, it was clarified that the tendency of fatigue life with axial stress depe s on the times to failure rather than number of cycles to failure. Also, it was clarified that the intergranular fracture and void generation due to creep occurred under the condition of axial stress of 23.4MPa. Abstract

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. Keywords: Bending fatigue; Creep; Platinum; Axial stress; Glass manufacturing. Keywords: Bending fatigue; Creep; Platinum; Axial stress; Glass manufacturing.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. * Correspon ing author. Tel.: +81-80-2338-5175; fax: +81-50-3377-5621 E-mail address: akifumi-niwa@agc.com * Corresponding author. Tel.: +81-80-2338-5175; fax: +81-50-3377-5621 E-mail address: akifumi-niwa@agc.com

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Fatigue Design 2019 Organizers. 10.1016/j.prostr.2019.12.013