Hot Deformation Behavior of High Strength Low Alloy Steel by Thermo Mechanical Simulator and Finite Element Method

2nd International Conference on Materials Engineering and Nanotechnology

材料科学;物理学

Kingkam, W.^1 ; Li, N.^1 ; Zhang, H.X.^1,2 ; Zhao, C.Z.^1,2

College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin

150001, China^1

Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, China^2

关键词: Deformation Characteristics;    Deformation temperatures;    High strength low alloy steel (HSLA);    Hot deformation behaviors;    Hyperbolic sine constitutive equations;    Mechanical machines;    Stress exponents;    Thermomechanical simulator;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/205/1/012001/pdf
DOI  :  10.1088/1757-899X/205/1/012001

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The hot deformation behavior of HSLA steel was investigated by using a MMS-200 thermal mechanical machine at different conditions and with deformation temperature of 800-1100 °C and strain rate of 0.1-10 S-1. FEM was analyzed the deformation characteristics of hot compression through Deform-3D software. It was discovered that the flow stress increases with increasing strain rate and decreasing temperature. The activation energy and stress exponent during hot deformation were calculated using hyperbolic sine constitutive equations. The result from the experiment represents the activation energy and stress exponent during hot compression of 222.256 kJ/mol. and 10.84. The prediction of distribution stress values from the constitutive equation in Deform-3D can be matched with the experimental results.