Finite Element Modeling of Thermo-Viscoelastoplastic Behavior of Dievar Alloy under Hot Rotary Swaging  

作　　者：Josef Izák Marek Benc Petr Opěla 

机构地区：[1]Department of Manufacturing Technology,Faculty of Mechanical Engineering,Brno University of Technology,Brno,61600,Czech Republic [2]Department of Metallurgical Technologies,Faculty of Materials Science and Technology,VŠB Technical University of Ostrava,Ostrava,70800,Czech Republic

出　　处：《Computer Modeling in Engineering & Sciences》2025年第3期3115-3133,共19页工程与科学中的计算机建模(英文)

基　　金：funded by the project SP2024/089 of the Specific Research of the VŠB-Technical University of Ostrava and realized within the framework of the Johannes Amos Comenius Program,Materials and Technologies for Sustainable Development-MATUR,No.CZ.02.01.01/00/22_008/0004631;Brno University of Technology project No.FSI-S-23-8231“Investigation of Dynamic Deformation Behavior ofMetallicMaterials Prepared via Alternative Production Methods”.

摘　　要：The paper deals with the FEM(Finite Element Method)simulation of rotary swaging of Dievar alloy produced by additive manufacturing technology Selective Laser Melting and conventional process.Swaging was performed at a temperature of 900℃.True flow stress-strain curves were determined for 600℃–900℃and used to construct a Hensel-Spittel model for FEM simulation.The process parameters,i.e.,stress,temperature,imposed strain,and force,were investigation during the rotary swaging process.Firstly,the stresses induced during rotary swaging and the resistance of the material to deformation were investigated.The amount and distribution of imposed strain in the cross-section can serve as a valuable indicator of the reduction in porosity and the texture evolution of the material.The simulation revealed the force required to swag the Dievar alloy.It also showed the evolution of temperature,which is important for phase transformation during solidification.Furthermore,microstructure evolutionwas observed before and then after rotary swaging.Dievar alloy is a critical material in the manufacture of dies for high-pressure die casting,forging tools,and other equipment subjected to high temperatures and mechanical loads.Understanding its viscoelastoplastic behavior under rotary swaging conditions is essential to optimize its performance in these demanding industrial applications.

关 键 词：FEM rotary swaging SLM selective laser melting dievar ingot casting hot work tool steel additive manufacturing 

分 类 号：TG306[金属学及工艺—金属压力加工]