High-resolution transmission electron microscopy study of crystallography and morphology of TiC precipitates in tempered steel

Fu Gao Wei, Toru Hara, Kaneaki Tsuzaki

研究成果: Contribution to journalArticle査読

57 被引用数 (Scopus)

抄録

In spite of the significance of NaCl-type transition-metal carbides in steels, their crystallography and morphology have not been understood on an atomic scale. High-resolution electron microscopy was employed in the present work to examine the crystallography and morphology of TiC particles that precipitated in the quenched and tempered 0.05wt%C-0.20wt%Ti-2.0wt%Ni steel. Plate-like TiC precipitates with a thickness ranging from a couple of atomic layers to 20 nm were observed in steels by tempering at 550, 600 and 800°C. It was found that the Baker-Nutting orientation relationship is always satisfied with the ferrite matrix within about 5° for both the nanosized and the coarse TiC particles. The habit plane of the TiC precipitate is the (100) ferrite plane. A moderate tendency for the faceting of lateral interfaces on the {001} and {011} ferrite planes was found. The presence of interfacial misfit dislocations was revealed by examining the excess lattice fringes terminating at the interfaces between the TiC platelet and the ferrite matrix. The location and number of the excess lattice fringes terminating at the broad plane and the lateral interface were consistent with the mismatch in the atomic arrangement between the Baker-Nutting orientation relationship related TiC and ferrite.

本文言語英語
ページ(範囲)1735-1751
ページ数17
ジャーナルPhilosophical Magazine
84
17
DOI
出版ステータス出版済み - 6 11 2004
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学

フィンガープリント

「High-resolution transmission electron microscopy study of crystallography and morphology of TiC precipitates in tempered steel」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル