Strength of Alloyed Metal Castings Using Multiphase Models and Non-Linear FEM

Heikki Martikka; Ilkka Pöllänen

doi:10.4028/www.scientific.net/MSF.638-642.2658

Paper Titles

Modeling the Effect of Stress and Plastic Strain on Martensite Transformation
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Sensitivity Analysis as a Tool of Optimal Sensors Location for Solidification Parameters Estimation
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Simulative Accelerated Creep Test on Gleeble
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Simulation of Evolution of Dual-Phase Microstructure
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Strength of Alloyed Metal Castings Using Multiphase Models and Non-Linear FEM
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Design of Process Equipment Beam Joints to Utilise Stress Relaxation
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Numerical Simulation of the Portevin – Le Chatelier Effect in Various Material and at Different Scales
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Numerical Modeling of Casting Solidification Using Generalized Finite Difference Method
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Numerical Thermo-Mechanical Modelling of Stress Fields and Residual Constraints in Metallic Targets Subject to Laser Shock Processing
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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Strength of Alloyed Metal Castings Using...

Strength of Alloyed Metal Castings Using Multiphase Models and Non-Linear FEM

Abstract:

High chromium cast iron material 1.4405 GX4CrNiMo 16-5-1 is successfully used in chemical process industry components loaded with hot, highly corrosive and abrasive at high pressures. Overheating test made a discontinuous yielding knee to appear caused probably by dissolution of carbon containing smaller phases but the overall strength and ductility are not affected. Microstructures are studied by optical and SEM microscopy and hardness measurements. This alloy has three main phases appearing as a mixture of rounded and lamellar phases. The work hardening behaviour is studied by analytical composite phase models and 2D FEM models with individual bilinear hardening phase models. The results agreed reasonably. FEM models showed the weak points of the alloy. Fit to test data was better with rounded phase than lamellar phase model. Combination of these tools is useful for innovative special alloy developments.

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Periodical:

Materials Science Forum (Volumes 638-642)

Pages:

2658-2663

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.2658

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Online since:

January 2010

Authors:

Heikki Martikka, Ilkka Pöllänen

Keywords:

Finite Element Model (FEM), Modeling, Plastic Deformation, Simulation, Stainless Steel (SS)

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