An answer to the carbon cluster in low-temperature aged ferritic low-carbon steel

被引：11

作者：

Maeda, Takuya ^{[1
]}

Kawahara, Yasuhito ^{[1
]}

Kinoshita, Keisuke ^{[2
]}

Sawada, Hideaki ^{[2
]}

Takahashi, Jun ^{[3
]}

Teranishi, Ryo ^{[1
]}

Kaneko, Kenji ^{[1
]}

机构：

[1] Kyushu Univ, Dept Mat Sci & Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[2] Nippon Steel Corp Ltd, Adv Technol Res Labs, 1-8 Fuso Cho, Amagasaki, Hyogo 6600891, Japan

[3] Nippon Steel Corp Ltd, Adv Technol Res Labs, 20-1 Shintomi, Futtsu, Chiba 2938511, Japan

来源：

MATERIALS CHARACTERIZATION | 2020年 / 159卷

基金：

日本科学技术振兴机构;

关键词：

Low-carbon steel; Carbon cluster; Carbide; Transmission electron microscopy; MARTENSITIC MEDIUM-CARBON; ELECTRON-MICROSCOPY; CARBIDE PRECIPITATION; TRANSFORMATION; DEFORMATION; STRENGTH; BEHAVIOR; FRACTURE; STAGE;

D O I：

10.1016/j.matchar.2019.110006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The morphology and crystal structure of the carbon cluster in a low-temperature aged low-carbon ferritic steel were clarified by performing conventional and in-situ TEM, and atomically-resolved ADF-STEM observation. The carbon cluster grow parallel to < 001 > direction of the matrix, whose morphology was presumed to be either disk or plate. Lattice constant of the carbon cluster was measured by peak fitting of atomic columns observed by ADF-STEM. The result clarified that the structure of the carbon cluster was martensite-like body-centered tetragonal (bct) structure. This martensite-like bct structure suggested that the carbon cluster was supersaturated with carbon atoms occupying specific octahedral sites.

引用

页数：6

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