316L奥氏体不锈钢增材制造过程的显微组织和热力学模拟

Proceedings of The 1st International Electronic Conference on Metallurgy and Metals Pub Date : 2021-02-18 DOI:10.3390/IEC2M-09237

G. Haidemenopoulos, M. Sotiriou, John S. Aristeidakis, Maria-Ioanna T. Tzini, I. Papadioti, N. Aravas

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引用次数: 1

摘要

采用综合热力学和显微组织建模方法，研究了aisi316l奥氏体不锈钢的增材制造工艺。采用有限元方法分析了连续沉积过程中温度的变化规律。传热模拟提供了确定微观组织演变所需的温度场历史。采用热力学和动力学模拟计算了凝固过程和热循环过程中相和合金元素的时空分布。随后的微观组织性能可以作为力学有限元分析的输入，根据局部力学性能，计算残余应力和变形。

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Microstructural and thermomechanical simulation of the additive manufacturing process in 316L austenitic stainless steel

Additive manufacturing of an AISI 316L austenitic stainless steel was studied via an integrated thermomechanical and microstructural modelling approach. A finite element technique was employed to evaluate the temperature evolution due to successive material deposition. Heat transfer simulations provided the temperature field history, required to determine the microstructural evolution. Thermodynamic and kinetic simulations were employed to calculate temporal and spatial distribution of phases and alloying elements upon solidification and subsequent thermal cycling. The ensuing microstructural properties could be provided as an input for a mechanical finite element analysis to calculate, based on local mechanical properties, the residual stresses and distortions.

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Proceedings of The 1st International Electronic Conference on Metallurgy and Metals

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