Correlation of Yield Ratio with Materials Constants of Constitutive Equation

Young Min Kim; Sung Kyu Kim; Nack Kim

doi:10.4028/www.scientific.net/MSF.475-479.289

Paper Titles

Manufacturing and Oxidation Property of Steel and Ti Metal Fibers
p.273

Determination of Optimum Parameters Effect on Kerf Width of 316L Stainless Steel Tube in Nd:YAG Laser Cutting
p.277

The Electromagnetic Confinement and Shaping Process of Liquid Metal
p.281

Modeling and Numerical Calculation of Heat Transfer during Magnetic Field Quenching
p.285

Correlation of Yield Ratio with Materials Constants of Constitutive Equation
p.289

Experimental and Thermodynamic Modeling of the MnO-SiO₂-TiO₂-Ti₂O₃ System
p.293

Investigations on the Photoprotection Ability of TiO₂ Coated on Copper
p.297

Phase Transformation in Fe-Based Alloys in High Magnetic Fields
p.301

Variant Selection in Fcc-to-Bcc Precipitation at Grain Boundaries in Ni-43Cr Alloy
p.305

HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Correlation of Yield Ratio with Materials...

Correlation of Yield Ratio with Materials Constants of Constitutive Equation

Abstract:

The yield ratio of various HSLA steels has been correlated with the materials constants of Swift equation. It has been shown that the materials constants, b and N, of Swift equation can be related to microstructural features such as the dislocation density and volume fraction of constituent phases. In particular, the constant b can be expressed as a function of volume fraction of constituent phases. It has also been shown that the yield ratio has a linear relationship with ln(b/N2). Since the microstructural features often have opposing effects on the values of b and N, careful control of microstructure is necessary to optimize the yield ratio and other properties. The possible way of decreasing the yield ratio without sacrificing other properties of HSLA steels is suggested based on the relationship between yield ratio and the materials constants of Swift equations.