基于物理流变应力模型的增材制造718合金切削模拟

IF 3.2 3区 工程技术 Q2 ENGINEERING, INDUSTRIAL
Amir Malakizadi , Rachid M'Saoubi (1)
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引用次数: 0

摘要

提出了一种基于位错的流动应力模型来描述激光和电子束粉末床熔合制备的718合金的行为。这种基于物理的模型适用于微观结构的变化,包括γ″析出相的尺寸和体积分数、晶体织构、晶粒尺寸和不可移动位错的密度。结合热力学和动力学模拟数据,以及先进表征方法的见解,该模型为评估增材制造合金718的可加工性提供了一个框架。预测的切削力和切屑形状参数与实测结果吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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 γ 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.
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来源期刊
Cirp Annals-Manufacturing Technology
Cirp Annals-Manufacturing Technology 工程技术-工程:工业
CiteScore
7.50
自引率
9.80%
发文量
137
审稿时长
13.5 months
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.
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