Tailoring the Microstructure of Coarse-Grained HAZ in Steel for Large Heat Input Welding: Effect of Ti–Mg–Ce–V Inclusion/Precipitation Particles

In this study, a novel Ti–Mg–Ce–V-treated steel was designed for large heat input welding. The addition of Ce in Ti → Mg deoxidation process ensured sufficient Ti–Mg–Ce oxide inclusions in steel. The complex precipitation of V further improved the nucleation ability of ferrite. At simulated heat inp...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2021-08, Vol.52 (8), p.3191-3197
Hauptverfasser:	Wang, Chao, Hao, Junjie, Kang, Jian, Yuan, Guo, Misra, R. Devesh K., Wang, Guodong
Format:	Artikel
Sprache:	eng
Schlagworte:	Brief Communication Cerium Characterization and Evaluation of Materials Chemistry and Materials Science Deoxidizing Ferrites Heat affected zone Impact strength Materials Science Metallic Materials Microstructure Nanotechnology Nonmetallic inclusions Nucleation Steel Structural Materials Surfaces and Interfaces Thin Films Titanium Vanadium Welding
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Beschreibung
Zusammenfassung:	In this study, a novel Ti–Mg–Ce–V-treated steel was designed for large heat input welding. The addition of Ce in Ti → Mg deoxidation process ensured sufficient Ti–Mg–Ce oxide inclusions in steel. The complex precipitation of V further improved the nucleation ability of ferrite. At simulated heat input of 500 kJ/cm, significant austenite pinning effect and intragranular ferrite nucleation were realized concurrently. A fine-grained microstructure with high impact toughness was obtained.
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-021-06321-6