Three-dimensional morphology of ferrite formed in association with inclusions in low-carbon steel

被引:77
作者
Wu, KM
Inagawa, Y
Enomoto, M [1 ]
机构
[1] Ibaraki Univ, Dept Mat Sci, Hitachi, Ibaraki 3168511, Japan
[2] Ibaraki Univ, Fac Engn, Hitachi, Ibaraki 3168511, Japan
[3] Japan Space Utilizat Promot Ctr, Tokyo 1698624, Japan
关键词
low-carbon steel; acicular ferrite; Widmanstatten ferrite; three-dimensional reconstruction; inclusion;
D O I
10.1016/j.matchar.2004.04.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Three-dimensional (3D) morphology and growth behavior of ferrite formed at intragranular inclusions in low-carbon steel were studied by serial sectioning and computer-aided visualization. The specimens taken from the weld deposit were austenitized and isothermally reacted for varying times. The length, width, and thickness of ferrite plates were measured from 3D-reconstructed images. From the length-to-width ratio, the morphology of ferrite is likely to be a lath rather than a plate in this alloy. Multivariant ferrite plates (or laths) were observed to be nucleated at inclusions and grow in the directions close to <110>, with habit planes near {111}(gamma), probably keeping a fixed orientation relationship with austenite. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:121 / 127
页数:7
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