Quantitative prediction of deformed austenite and transformed ferrite texture in hot-rolled steel sheet

17th International Conference on Textures of Materials

材料科学;物理学

Tanaka, Y.^1 ; Tomida, T.^2 ; Mohles, V.^3

Technival RandD Bureau, Nippon Steel and Sumitomo Metal Corp., Amagasaki, Japan^1

Amagasaki Unit, Nippon Steel and Sumikin Technology, Amagasaki, Japan^2

Institute of Physical Metallurgy and Metal Physics, RWTH Aachen, Germany^3

关键词: Crystal plasticity models;    Deformed austenite;    Grain-interaction models;    Hot rolled steel sheet;    Kurdjumov-Sachs;    Orientation relationship;    Quantitative prediction;    Transformation textures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012057/pdf
DOI  :  10.1088/1757-899X/82/1/012057

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A model to quantitatively predict ferrite (α) textures in hot-rolled steel sheets has been developed. In this model, the crystal plasticity model, called "Grain Interaction model (GIA)", and the transformation texture model, called "Double K-S relation (DKS)", are linked together. The deformed austenite (γ) texture is predicted by GIA with taking not only the standard {111} slip system but also non-octahedral slip systems into account. Then the transformed a texture is calculated by DKS, in which a nucleated α prefers to have orientation relationship near the Kurdjumov-Sachs relation with both of two neighboring γ grains. For validation, single pass hot-rolling tests on a C-Si-Mn steel were carried out. The comparison between the predicted and the experimental textures shows that the linked model (GIA & DKS) can lead to a remarkable reproduction of the texture of hot-rolled steel sheets.