In-situ observation of microstructure evolution in heat-affected-zone of Ti-killed steel weld

被引：0
作者：
Tanimoto, Yoshinori [1 ]
Terasaki, Hidenori [2 ]
Komizo, Yu-Ichi [2 ]
机构：
[1] Joining and Welding Research Institute, Osaka University (Now Kobe Steel)
[2] Joining and Welding Research Institute, Osaka University
来源：
Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society | 2009年 / 27卷 / 02期
关键词：
Acicular ferrite; Inclusion; Nucleation; Ti-killed steel weld;
D O I：
10.2207/qjjws.27.122s
中图分类号：
学科分类号：
摘要：
The inclusion which stimulated the ferrite nucleation was directly classified through the in-situ observation experiments in the HAZ of the Ti-killed steel weld. The chemical composition of the selected inclusion was analyzed and the nucleation potential was discussed. The potential for the ferrite nucleation is ranked as follows: grain boundary, Ti-X and MnS in order. Furthermore, the existence of effective and ineffective MnS for nucleation was made clear and the difference was estimated.
引用
收藏
页码：122s / 125s
页数：3
相关论文
共 9 条
  • [1] Shim J.H., Cho Y.W., Chung S.H., Shim J.D., Lee D.N., Nucleation of intragranular ferrite at Ti <sub>2</sub>O <sub>3</sub> particle in low carbon steel, Acta Mater, 47, 9, pp. 2751-2760, (1999)
  • [2] Mills A.R., Thewlis G., Whiteman J.A., Nature of inclusions in steel weld metals and their influence on formation of acicular ferrite, Mater. Sci. Technol., 3, pp. 1051-1061, (1987)
  • [3] Mori H., Homma H., Ohkita S., Wakabayashi M., Mechanism of notch toughness improvement in weld metals containing ti and b, J. of the JWS, 50, pp. 174-181, (1981)
  • [4] Yamada T., Terasaki H., Komizo Y., Microscopic observation of inclusions contributing to formation of acicular ferrite in steel weld metal, Sci. and Tech. Weld. Joining, 13, pp. 118-125, (2008)
  • [5] Dowling J.M., Corbett J.M., Kerr H.W., Inclusion phases and nucleation of acicular ferrite in submerged arc welds in high strength low alloy steels, Metall. Mater. Trans. A, 17 A, pp. 1611-1623, (1986)
  • [6] Terasaki H., Yamada T., Komizo Y., Observation of nucleation and growth of acicular ferrite in hsla steel weld-metal, Mater. Sci. Forum, 580-582, pp. 33-36, (2008)
  • [7] Yin H., Emi T., Shibata H., Morphological instability of δ-ferrite/γ-austenite interphase boundary in low carbon steels, Acta mater., 47, pp. 1523-1535, (1999)
  • [8] Ueno M., Inoue T., Trans. ISIJ, 13, pp. 210-217, (1973)
  • [9] McLean D., 'Grain Boundaries in Metals', pp. 118-137, (1957)
1