Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy

Low-cycle fatigue, creep and creep-fatigue tests of Ti(2)AlNb-based alloy were carried out at 550 °C. Compared with low-cycle fatigue, a creep-fatigue hysteresis loop has larger area and smaller average stress. The introduction of creep damage will greatly reduce the cycle life, and change the fatig...

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Autores principales: Wang, Yanju, Wang, Xinhao, Yang, Yanfeng, Lan, Xiang, Zhang, Zhao, Li, Heng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9501530/
https://www.ncbi.nlm.nih.gov/pubmed/36143548
http://dx.doi.org/10.3390/ma15186238
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author Wang, Yanju
Wang, Xinhao
Yang, Yanfeng
Lan, Xiang
Zhang, Zhao
Li, Heng
author_facet Wang, Yanju
Wang, Xinhao
Yang, Yanfeng
Lan, Xiang
Zhang, Zhao
Li, Heng
author_sort Wang, Yanju
collection PubMed
description Low-cycle fatigue, creep and creep-fatigue tests of Ti(2)AlNb-based alloy were carried out at 550 °C. Compared with low-cycle fatigue, a creep-fatigue hysteresis loop has larger area and smaller average stress. The introduction of creep damage will greatly reduce the cycle life, and change the fatigue crack initiation point and failure mechanism. Based on the linear damage accumulation rule, the fatigue damage and creep damage were described by the life fraction method and the time fraction method, respectively, and the creep-fatigue life of the Ti(2)AlNb-based alloy is predicted within an error band of ±2 times.
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spelling pubmed-95015302022-09-24 Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy Wang, Yanju Wang, Xinhao Yang, Yanfeng Lan, Xiang Zhang, Zhao Li, Heng Materials (Basel) Article Low-cycle fatigue, creep and creep-fatigue tests of Ti(2)AlNb-based alloy were carried out at 550 °C. Compared with low-cycle fatigue, a creep-fatigue hysteresis loop has larger area and smaller average stress. The introduction of creep damage will greatly reduce the cycle life, and change the fatigue crack initiation point and failure mechanism. Based on the linear damage accumulation rule, the fatigue damage and creep damage were described by the life fraction method and the time fraction method, respectively, and the creep-fatigue life of the Ti(2)AlNb-based alloy is predicted within an error band of ±2 times. MDPI 2022-09-08 /pmc/articles/PMC9501530/ /pubmed/36143548 http://dx.doi.org/10.3390/ma15186238 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Yanju
Wang, Xinhao
Yang, Yanfeng
Lan, Xiang
Zhang, Zhao
Li, Heng
Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title_full Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title_fullStr Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title_full_unstemmed Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title_short Study on Creep-Fatigue Mechanical Behavior and Life Prediction of Ti(2)AlNb-Based Alloy
title_sort study on creep-fatigue mechanical behavior and life prediction of ti(2)alnb-based alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9501530/
https://www.ncbi.nlm.nih.gov/pubmed/36143548
http://dx.doi.org/10.3390/ma15186238
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