The 5th International Conference on Advanced Materials and Processing (ICAMP 5), Harbin , 2008-09-03

Title : ( Effect of titanium addition on the chemical composition and toughness of weld metal in a submerged arc welded HSLA pipeline steel )

Authors: Behrooz Beidokhti , A.H. Koukabi , A. Dolati ,

Access to full-text not allowed by authors

Citation: BibTeX | EndNote

Abstract

The objective of this work was to study the influence of titanium variations on the API 5L-X70 steel weld metal properties. The relationship between microstructure and toughness of the weld deposit was studied by means of full metallographic, longitudinal tensile and Charpy-V notch tests on the specimens cut transversely to the weld beads. The best combination of microstructure and impact properties was obtained in the range of 0.02-0.05% titanium. By further increasing of titanium content, the microstructure was changed from a mixture of acicular ferrite, grain-boundary ferrite, Widmanstätten ferrite to a mixture of acicular ferrite, grain-boundary ferrite, bainite and ferrite with M/A microconstituent. Therefore, the mode of fracture also changed from dimpled ductile to quasi-cleavage. Titanium-base inclusions improve impact toughness by increasing the formation of acicular ferrite in the microstructure. The amount of manganese in inclusions was decreased with addition of titanium to the weld metal.

Keywords

, Titanium; Bainite; Quasi, cleavage; Manganese
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@inproceedings{paperid:1032414,
author = {Beidokhti, Behrooz and A.H. Koukabi and A. Dolati},
title = {Effect of titanium addition on the chemical composition and toughness of weld metal in a submerged arc welded HSLA pipeline steel},
booktitle = {The 5th International Conference on Advanced Materials and Processing (ICAMP 5), Harbin},
year = {2008},
location = {هاربین},
keywords = {Titanium; Bainite; Quasi-cleavage; Manganese},
}

[Download]

%0 Conference Proceedings
%T Effect of titanium addition on the chemical composition and toughness of weld metal in a submerged arc welded HSLA pipeline steel
%A Beidokhti, Behrooz
%A A.H. Koukabi
%A A. Dolati
%J The 5th International Conference on Advanced Materials and Processing (ICAMP 5), Harbin
%D 2008

[Download]