Cargando…
Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures
The purpose of this paper is to investigate the fatigue properties of C17200 alloy under the condition of quenching aging heat treatment at high temperatures, and to provide a design reference for its application in a certain temperature range. For this purpose, the tensile and rotary bending fatigu...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9864880/ https://www.ncbi.nlm.nih.gov/pubmed/36676552 http://dx.doi.org/10.3390/ma16020815 |
_version_ | 1784875695060549632 |
---|---|
author | Lai, Fuqiang Mao, Kun Cao, Changsheng Hu, Anqiong Tu, Junxiang Lin, Youxi |
author_facet | Lai, Fuqiang Mao, Kun Cao, Changsheng Hu, Anqiong Tu, Junxiang Lin, Youxi |
author_sort | Lai, Fuqiang |
collection | PubMed |
description | The purpose of this paper is to investigate the fatigue properties of C17200 alloy under the condition of quenching aging heat treatment at high temperatures, and to provide a design reference for its application in a certain temperature range. For this purpose, the tensile and rotary bending fatigue (RBF) tests were carried out at different temperatures (25 °C, 150 °C, 350 °C, and 450 °C). The tensile strength was obtained, and relationships between the applied bending stress levels and the number of fatigue fracture cycles were fitted to the stress-life (S-N) curves, and the related equations were determined. The fractured surfaces were observed and analyzed by a scanning electron microscopy (SEM). The results show that the RBF fatigue performance of C17200 alloy specimens is decreased with the increase in test temperature. When the temperature is below 350 °C, the performance degradation amplitudes of mechanical properties and RBF fatigue resistance are at a low level. However, compared to the RBF fatigue strength of 1 × 10(7) cycles at 25 °C, it is decreased by 38.4% when the temperature reaches 450 °C. It is found that the fatigue failure type of C17200 alloy belongs to surface defect initiation. Below 350 °C, the surface roughness of the fatigue fracture is higher, which is similar to the brittle fracture, so the boundary of the fracture regions is not obvious. At 450 °C, due to the further increase in temperature, oxidation occurs on the fracture surface, and the boundary of typical fatigue zone is obvious. |
format | Online Article Text |
id | pubmed-9864880 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98648802023-01-22 Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures Lai, Fuqiang Mao, Kun Cao, Changsheng Hu, Anqiong Tu, Junxiang Lin, Youxi Materials (Basel) Article The purpose of this paper is to investigate the fatigue properties of C17200 alloy under the condition of quenching aging heat treatment at high temperatures, and to provide a design reference for its application in a certain temperature range. For this purpose, the tensile and rotary bending fatigue (RBF) tests were carried out at different temperatures (25 °C, 150 °C, 350 °C, and 450 °C). The tensile strength was obtained, and relationships between the applied bending stress levels and the number of fatigue fracture cycles were fitted to the stress-life (S-N) curves, and the related equations were determined. The fractured surfaces were observed and analyzed by a scanning electron microscopy (SEM). The results show that the RBF fatigue performance of C17200 alloy specimens is decreased with the increase in test temperature. When the temperature is below 350 °C, the performance degradation amplitudes of mechanical properties and RBF fatigue resistance are at a low level. However, compared to the RBF fatigue strength of 1 × 10(7) cycles at 25 °C, it is decreased by 38.4% when the temperature reaches 450 °C. It is found that the fatigue failure type of C17200 alloy belongs to surface defect initiation. Below 350 °C, the surface roughness of the fatigue fracture is higher, which is similar to the brittle fracture, so the boundary of the fracture regions is not obvious. At 450 °C, due to the further increase in temperature, oxidation occurs on the fracture surface, and the boundary of typical fatigue zone is obvious. MDPI 2023-01-13 /pmc/articles/PMC9864880/ /pubmed/36676552 http://dx.doi.org/10.3390/ma16020815 Text en © 2023 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 Lai, Fuqiang Mao, Kun Cao, Changsheng Hu, Anqiong Tu, Junxiang Lin, Youxi Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title | Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title_full | Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title_fullStr | Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title_full_unstemmed | Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title_short | Rotating Bending Fatigue Behaviors of C17200 Beryllium Copper Alloy at High Temperatures |
title_sort | rotating bending fatigue behaviors of c17200 beryllium copper alloy at high temperatures |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9864880/ https://www.ncbi.nlm.nih.gov/pubmed/36676552 http://dx.doi.org/10.3390/ma16020815 |
work_keys_str_mv | AT laifuqiang rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures AT maokun rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures AT caochangsheng rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures AT huanqiong rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures AT tujunxiang rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures AT linyouxi rotatingbendingfatiguebehaviorsofc17200berylliumcopperalloyathightemperatures |