Nanoscale lamellae in an oxide dispersion strengthened steel processed by dynamic plastic deformation

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Zhang, Z.B.^1,4 ; Mishin, O.V.^1,4 ; Tao, N.R.^2,4 ; Pantleon, W.^3,4

Section for Materials Science and Advanced Characterization, Department of Wind Energy, Technical University of Denmark, Roskilde 4000, Denmark^1

Institute of Metal Research, Chinese Academy of Science, 110016 Shenyang, China^2

Section for Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark^3

Sino-Danish Center for Education and Research, Denmark^4

关键词: Dynamic plastic deformation;    Electron back scatter diffraction;    Ferritic;    Nano scale;    Oxide dispersion strengthened;    Oxide dispersion strengthened steel;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012065/pdf
DOI  :  10.1088/1757-899X/63/1/012065

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The microstructure of an oxide dispersion strengthened ferritic PM2000 steel with a strong initial (100) texture has been investigated after compression by dynamic plastic deformation (DPD) at room temperature to a strain of 2.1. Measurements using electron backscatter diffraction and transmission electron microscopy indicate that DPD along the (100) direction results in a lamellar-type microstructure, in which lamellae of the (100) orientation alternate with (111) lamellae. These lamellae have a common rotation (110) axis in the compression plane. The microstructure is quite heterogeneous, where regions containing very narrow lamellae (with (111) lamellae as narrow as 20-40 nm) and regions of comparatively broad lamellae are found.