R. T. P. Rajendra Kumar, K. Jayabal, M. Kamaraj, Srinivasa Rao Bakshi
{"title":"Hot Tensile Deformation Behaviour of AA2524-T3 Alloy and Prediction of Johnson–Cook Model Parameters","authors":"R. T. P. Rajendra Kumar, K. Jayabal, M. Kamaraj, Srinivasa Rao Bakshi","doi":"10.1007/s12540-024-01749-y","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The presented work explores the quasi-static response of AA2524-T3 alloy studied under hot tensile loading. The impact on the flow stress of this alloy due to different strain rates in the range of 0.001 <span>\\(\\hbox {s}^{-1}\\)</span> to 0.1 <span>\\(\\hbox {s}^{-1}\\)</span> and temperatures between 25 and 300 °C are investigated experimentally. The initial microstructural features and subsequent microstructural changes after taking the alloy to various test temperatures, but prior to tensile testing, are characterized through extensive microscopical analysis. The formation of fine cell structures and the occurrence of more intense recovery mechanism are observed at 250 °C. Above this temperature, it is observed the presence of more amount of <span>\\(\\hbox {S}^{\\prime }\\)</span> precipitates. After performing hot tensile loading on AA2524-T3 under a various combination of test temperatures and strain rates, the fracture morphology of tested samples are examined. Notably, the ductility of AA2524-T3 alloy decreases marginally with an increase in strain rate up to 200 °C and beyond this temperature, it increases considerably for increase in strain rates. In addition to the experimental study, the parameters of Johnson–Cook constitutive model are determined to predict the flow stress behavior of AA2524-T3 for selected testing conditions. Finally, the strain rate sensitivity and thermal softening coefficient, the key parameters in Johnson–Cook model, are optimized for the chosen test ranges.</p><h3 data-test=\"abstract-sub-heading\">Graphic Abstract</h3>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"6 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12540-024-01749-y","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The presented work explores the quasi-static response of AA2524-T3 alloy studied under hot tensile loading. The impact on the flow stress of this alloy due to different strain rates in the range of 0.001 \(\hbox {s}^{-1}\) to 0.1 \(\hbox {s}^{-1}\) and temperatures between 25 and 300 °C are investigated experimentally. The initial microstructural features and subsequent microstructural changes after taking the alloy to various test temperatures, but prior to tensile testing, are characterized through extensive microscopical analysis. The formation of fine cell structures and the occurrence of more intense recovery mechanism are observed at 250 °C. Above this temperature, it is observed the presence of more amount of \(\hbox {S}^{\prime }\) precipitates. After performing hot tensile loading on AA2524-T3 under a various combination of test temperatures and strain rates, the fracture morphology of tested samples are examined. Notably, the ductility of AA2524-T3 alloy decreases marginally with an increase in strain rate up to 200 °C and beyond this temperature, it increases considerably for increase in strain rates. In addition to the experimental study, the parameters of Johnson–Cook constitutive model are determined to predict the flow stress behavior of AA2524-T3 for selected testing conditions. Finally, the strain rate sensitivity and thermal softening coefficient, the key parameters in Johnson–Cook model, are optimized for the chosen test ranges.
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
