The coupling effects of oxidation and temperature on the low cycle fatigue deformation behavior of CM 247 DS LC alloy

IF 5.7 2区材料科学 Q1 ENGINEERING, MECHANICAL

International Journal of Fatigue Pub Date : 2025-02-06 DOI:10.1016/j.ijfatigue.2025.108858

S. Chandra , N. Paulose , R.K. Rai

{"title":"The coupling effects of oxidation and temperature on the low cycle fatigue deformation behavior of CM 247 DS LC alloy","authors":"S. Chandra , N. Paulose , R.K. Rai","doi":"10.1016/j.ijfatigue.2025.108858","DOIUrl":null,"url":null,"abstract":"<div><div>The role of environmental degradation, particularly oxidation, on the low cycle fatigue response of rotating blades of aero-engine operating at significantly high temperatures is extremely important as it adversely affects its performance. The present work investigates the coupling effect of prior cyclic oxidation and temperature on the low cycle fatigue (LCF) fatigue behaviour of CM 247 DS LC Ni-based superalloy. The LCF tests were performed on both as-received and pre-oxidized specimens at design significant temperatures, i.e., 750 and 850 °C at a strain ratio of 0. The oxidation damage was induced by pre-cyclic thermal exposures at 850 °C for 500 h. The prior oxidized test specimens tended to have lower fatigue lives compared to the as-received test pieces. The nickel oxide, alumina, chromia scales, and alumina-rich intrusions formed during prior oxidation are vulnerable to cracking under low-cycle fatigue (LCF) loading, leading to rapid crack initiation and a corresponding reduction in LCF life. The deterioration of fatigue performance of the prior-oxidized samples is attributed to the formation of a weaker precipitate free zones zone, which effectively introduce the strain incompatibility and cracking the oxide scales.</div></div>","PeriodicalId":14112,"journal":{"name":"International Journal of Fatigue","volume":"194 ","pages":"Article 108858"},"PeriodicalIF":5.7000,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Fatigue","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0142112325000556","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The role of environmental degradation, particularly oxidation, on the low cycle fatigue response of rotating blades of aero-engine operating at significantly high temperatures is extremely important as it adversely affects its performance. The present work investigates the coupling effect of prior cyclic oxidation and temperature on the low cycle fatigue (LCF) fatigue behaviour of CM 247 DS LC Ni-based superalloy. The LCF tests were performed on both as-received and pre-oxidized specimens at design significant temperatures, i.e., 750 and 850 °C at a strain ratio of 0. The oxidation damage was induced by pre-cyclic thermal exposures at 850 °C for 500 h. The prior oxidized test specimens tended to have lower fatigue lives compared to the as-received test pieces. The nickel oxide, alumina, chromia scales, and alumina-rich intrusions formed during prior oxidation are vulnerable to cracking under low-cycle fatigue (LCF) loading, leading to rapid crack initiation and a corresponding reduction in LCF life. The deterioration of fatigue performance of the prior-oxidized samples is attributed to the formation of a weaker precipitate free zones zone, which effectively introduce the strain incompatibility and cracking the oxide scales.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Fatigue 工程技术-材料科学：综合

CiteScore

10.70

自引率

21.70%

发文量

619

审稿时长

58 days

期刊介绍： Typical subjects discussed in International Journal of Fatigue address: Novel fatigue testing and characterization methods (new kinds of fatigue tests, critical evaluation of existing methods, in situ measurement of fatigue degradation, non-contact field measurements) Multiaxial fatigue and complex loading effects of materials and structures, exploring state-of-the-art concepts in degradation under cyclic loading Fatigue in the very high cycle regime, including failure mode transitions from surface to subsurface, effects of surface treatment, processing, and loading conditions Modeling (including degradation processes and related driving forces, multiscale/multi-resolution methods, computational hierarchical and concurrent methods for coupled component and material responses, novel methods for notch root analysis, fracture mechanics, damage mechanics, crack growth kinetics, life prediction and durability, and prediction of stochastic fatigue behavior reflecting microstructure and service conditions) Models for early stages of fatigue crack formation and growth that explicitly consider microstructure and relevant materials science aspects Understanding the influence or manufacturing and processing route on fatigue degradation, and embedding this understanding in more predictive schemes for mitigation and design against fatigue Prognosis and damage state awareness (including sensors, monitoring, methodology, interactive control, accelerated methods, data interpretation) Applications of technologies associated with fatigue and their implications for structural integrity and reliability. This includes issues related to design, operation and maintenance, i.e., life cycle engineering Smart materials and structures that can sense and mitigate fatigue degradation Fatigue of devices and structures at small scales, including effects of process route and surfaces/interfaces.