Shiyuan Luo, Liang Xiao, Jun Jiang, Jia Li, Liangcai Zeng
{"title":"基于修正的麦考密克构造模型的机器刚度对 Ti-12Mo 合金波特文-勒夏特列效应的影响","authors":"Shiyuan Luo, Liang Xiao, Jun Jiang, Jia Li, Liangcai Zeng","doi":"10.1007/s12540-024-01669-x","DOIUrl":null,"url":null,"abstract":"<div><p>An improved 3D FE model, considering machine stiffness effect and strain dependent parameters in an embedded modified McCormick’s constitutive model, is developed to numerically investigate the spatiotemporal characteristics of the PLC effect in Ti-12Mo alloy tensile tests. The material parameters of the modified McCormick’s model are calibrated in details, and the simulated results are compared with experiment and literature ones. Then, the influence of machine stiffness on the spatiotemporal behaviors of the PLC effect in Ti-12Mo alloy are quantitatively analyzed. The results show that the improved FE model has a higher simulation accuracy in term of stress drop frequency. Moreover, the average stress drop magnitude decreases and the number of stress drops increases with the increase of machine stiffness, which are mainly owing to the decrease of aging time. Furthermore, the PLC band width decreases as increasing machine stiffness, which is attributed to the decrease of driving force for band nucleation. Besides, the continuous and hopping propagations of the PLC band are observed, and the propagation continuity obviously increases as increasing machine stiffness, which is mainly related to the increase of spatial coupling force.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"30 10","pages":"2685 - 2698"},"PeriodicalIF":3.3000,"publicationDate":"2024-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Machine Stiffness on the Portevin–Le Chatelier Effect of Ti-12Mo Alloy Based on a Modified McCormick Constitutive Model\",\"authors\":\"Shiyuan Luo, Liang Xiao, Jun Jiang, Jia Li, Liangcai Zeng\",\"doi\":\"10.1007/s12540-024-01669-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>An improved 3D FE model, considering machine stiffness effect and strain dependent parameters in an embedded modified McCormick’s constitutive model, is developed to numerically investigate the spatiotemporal characteristics of the PLC effect in Ti-12Mo alloy tensile tests. The material parameters of the modified McCormick’s model are calibrated in details, and the simulated results are compared with experiment and literature ones. Then, the influence of machine stiffness on the spatiotemporal behaviors of the PLC effect in Ti-12Mo alloy are quantitatively analyzed. The results show that the improved FE model has a higher simulation accuracy in term of stress drop frequency. Moreover, the average stress drop magnitude decreases and the number of stress drops increases with the increase of machine stiffness, which are mainly owing to the decrease of aging time. Furthermore, the PLC band width decreases as increasing machine stiffness, which is attributed to the decrease of driving force for band nucleation. Besides, the continuous and hopping propagations of the PLC band are observed, and the propagation continuity obviously increases as increasing machine stiffness, which is mainly related to the increase of spatial coupling force.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"30 10\",\"pages\":\"2685 - 2698\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-04-13\",\"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://link.springer.com/article/10.1007/s12540-024-01669-x\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-024-01669-x","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}
Influence of Machine Stiffness on the Portevin–Le Chatelier Effect of Ti-12Mo Alloy Based on a Modified McCormick Constitutive Model
An improved 3D FE model, considering machine stiffness effect and strain dependent parameters in an embedded modified McCormick’s constitutive model, is developed to numerically investigate the spatiotemporal characteristics of the PLC effect in Ti-12Mo alloy tensile tests. The material parameters of the modified McCormick’s model are calibrated in details, and the simulated results are compared with experiment and literature ones. Then, the influence of machine stiffness on the spatiotemporal behaviors of the PLC effect in Ti-12Mo alloy are quantitatively analyzed. The results show that the improved FE model has a higher simulation accuracy in term of stress drop frequency. Moreover, the average stress drop magnitude decreases and the number of stress drops increases with the increase of machine stiffness, which are mainly owing to the decrease of aging time. Furthermore, the PLC band width decreases as increasing machine stiffness, which is attributed to the decrease of driving force for band nucleation. Besides, the continuous and hopping propagations of the PLC band are observed, and the propagation continuity obviously increases as increasing machine stiffness, which is mainly related to the increase of spatial coupling force.
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.
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