PSI - Issue 43

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

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ScienceDirect

Procedia Structural Integrity 43 (2023) 215–220

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. © 20 23 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. Abstract This study presents interpretation and evaluation of a r ng of isothermal experimental cr ck growth data on polycryst ll ne XH73M nickel-ba ed lloy g erated by wo type test carried out by stress-controlled pure fatigue and cree -f igue i t raction conditions. The tests ve been carried out using cycles with a triangular and trapezoidal wavefor and a temp rature range of 23 750°C. It was found that from the crack growth rate point of view, he following order of arrangement of fatigue fracture diagrams is formed: isothermal creep-fatigue interaction, isothermal pure fast (f=10 Hz) and low (f=1 Hz) fati ue. The orderi g of the crack g owth ate curves is supported by detailed fractographic analy is which shows transgran lar or inte gr nular mechani m of fatigue c k owth depending on thermo-mech nical test conditions. The egularities of fatigue crack pr pagation were established by fractographic analysis. It was found or exampl that the i tergranular crack growth mechanism become dominant at 750°C for the pure fatigue and at 550°C for reep -fatigue interaction conditions. The secondary crystals on the grain boundary of primary grain at intergranular fracture of specimen tested at 650 ° C under creep-fatigue interaction conditions appeared. © 20 23 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under the responsibility of MSMF10 organizers. 10th International Conference on Materials Structure and Micromechanics of Fracture Micromechanics of fatigue, creep-fatigue interaction and thermo mechanical crack growth of XH73M nickel alloy Shanyavskiy A. a , Shlyannikov V. b, * Soldatenkov A. a , Rubtsov V. b a Aviation Register for the Russian Federation, Airport Sheremetievo-1, PO Box 54, Moscow region, 4 Chimkinskiy State, 141426, Russia b Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, Lobachevsky 2/31, Kazan, 420111, Russia Abstract This study presents interpretation and evaluation of a range of isothermal experimental crack growth data on polycrystalline XH73M nickel-based alloy generated by two type tests carried out by stress-controlled pure fatigue and creep-fatigue interaction conditions. The tests have been carried out using cycles with a triangular and trapezoidal waveform and a temperature range of 23 750°C. It was found that from the crack growth rate point of view, the following order of arrangement of fatigue fracture diagrams is formed: isothermal creep-fatigue interaction, isothermal pure fast (f=10 Hz) and slow (f=1 Hz) fatigue. The ordering of the crack growth rate curves is supported by detailed fractographic analysis which shows transgranular or intergranular mechanism of fatigue crack growth depending on thermo-mechanical test conditions. The regularities of fatigue crack propagation were established by fractographic analysis. It was found for example that the intergranular crack growth mechanism become dominant at 750°C for the pure fatigue and at 550°C for creep -fatigue interaction conditions. The secondary crystals on the grain boundary of primary grain at intergranular fracture of specimen tested at 650 ° C under creep-fatigue interaction conditions appeared. 10th International Conference on Materials Structure and Micromechanics of Fracture Micromechanics of fatigue, creep-fatigue interaction and thermo mechanical crack growth of XH73M nickel alloy Shanyavskiy A. a , Shlyannikov V. b, * Soldatenkov A. a , Rubtsov V. b a Aviation Regist r for the Russian Federation, Airport Sheremet evo-1, PO B x 54, Mo cow region, 4 Chimkinskiy State, 41426, Russia b Federal Research Center, Kazan Scientific Center of Russian Academy of Sciences, Lobachevsky 2/31, Kazan, 420111, Russia

Keywords: Ni-based superalloy; crack growth rate; transgranular and intergranular fracture; creep-fatigue; interaction Keywords: Ni-based superalloy; crack growth rate; transgranular and intergranular fracture; creep-fatigue; interaction

* Corresponding author. Tel.: +7-9600-481305; fax: +7-843-236-3102. E-mail address: shlyannikov@mail.ru * Correspon ing author. Tel.: +7-9600-481305; fax: +7-843-236-3102. E-mail address: shlyannikov@mail.ru

2452-3216 © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. 2452-3216 © 2023 The Authors. Published by Elsevier B.V. This is an ope access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers.

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under the responsibility of MSMF10 organizers. 10.1016/j.prostr.2022.12.261