{"title":"基于物理流变应力模型的增材制造718合金切削模拟","authors":"Amir Malakizadi , Rachid M'Saoubi (1)","doi":"10.1016/j.cirp.2025.04.024","DOIUrl":null,"url":null,"abstract":"<div><div>A dislocation-based flow stress model is proposed to describe the behavior of Alloy 718 fabricated using laser-based and electron-beam powder bed fusion methods. This physics-based model is adaptive to microstructural variations including the size and volume fraction of <span><math><msup><mrow><mrow><mi>γ</mi></mrow></mrow><mrow><mo>″</mo></mrow></msup></math></span> precipitates, crystallographic texture, grain size and the density of immobile dislocations. Coupled with data from thermodynamic and kinetic simulations, as well as insights from advanced characterization methods, this model provides a framework for assessing machinability of additively manufactured Alloy 718. The predicted cutting forces and chip shape parameters showed a good agreement with the corresponding measurements.</div></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"74 1","pages":"Pages 113-117"},"PeriodicalIF":3.2000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A physics-based flow stress model for cutting simulation of additively manufactured Alloy 718\",\"authors\":\"Amir Malakizadi , Rachid M'Saoubi (1)\",\"doi\":\"10.1016/j.cirp.2025.04.024\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A dislocation-based flow stress model is proposed to describe the behavior of Alloy 718 fabricated using laser-based and electron-beam powder bed fusion methods. This physics-based model is adaptive to microstructural variations including the size and volume fraction of <span><math><msup><mrow><mrow><mi>γ</mi></mrow></mrow><mrow><mo>″</mo></mrow></msup></math></span> precipitates, crystallographic texture, grain size and the density of immobile dislocations. Coupled with data from thermodynamic and kinetic simulations, as well as insights from advanced characterization methods, this model provides a framework for assessing machinability of additively manufactured Alloy 718. The predicted cutting forces and chip shape parameters showed a good agreement with the corresponding measurements.</div></div>\",\"PeriodicalId\":55256,\"journal\":{\"name\":\"Cirp Annals-Manufacturing Technology\",\"volume\":\"74 1\",\"pages\":\"Pages 113-117\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cirp Annals-Manufacturing Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0007850625000691\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, INDUSTRIAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cirp Annals-Manufacturing Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0007850625000691","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, INDUSTRIAL","Score":null,"Total":0}
A physics-based flow stress model for cutting simulation of additively manufactured Alloy 718
A dislocation-based flow stress model is proposed to describe the behavior of Alloy 718 fabricated using laser-based and electron-beam powder bed fusion methods. This physics-based model is adaptive to microstructural variations including the size and volume fraction of precipitates, crystallographic texture, grain size and the density of immobile dislocations. Coupled with data from thermodynamic and kinetic simulations, as well as insights from advanced characterization methods, this model provides a framework for assessing machinability of additively manufactured Alloy 718. The predicted cutting forces and chip shape parameters showed a good agreement with the corresponding measurements.
期刊介绍:
CIRP, The International Academy for Production Engineering, was founded in 1951 to promote, by scientific research, the development of all aspects of manufacturing technology covering the optimization, control and management of processes, machines and systems.
This biannual ISI cited journal contains approximately 140 refereed technical and keynote papers. Subject areas covered include:
Assembly, Cutting, Design, Electro-Physical and Chemical Processes, Forming, Abrasive processes, Surfaces, Machines, Production Systems and Organizations, Precision Engineering and Metrology, Life-Cycle Engineering, Microsystems Technology (MST), Nanotechnology.