Effects of Nitrogen on Weld Metal Microstructure and Toughness in Submerged Arc Welding

Kook Soo Bang; Woo Yeol Kim; Chan Park; Young Ho Ahn; Jong Bong Lee

doi:10.4028/www.scientific.net/MSF.539-543.3906

Paper Titles

Microstructure of SiC/Cu Interface by Pulsed Electric-Current Bonding
p.3883

Influence of Alloying Elements on Interfacial Reaction and Strength of Aluminum/Steel Dissimilar Joints for Light Weight Car Body
p.3888

Crystallographic Texture of Dissimilar Laser Welded Al5083-Al6013 Sheets
p.3894

Precise Resistance Welding with Wire Insert
p.3900

Effects of Nitrogen on Weld Metal Microstructure and Toughness in Submerged Arc Welding
p.3906

Repair Welding of Irradiated Reactor Vessel Steel by Low Heat Input GTAW and LBW
p.3912

Ultrasonic Friction Power in Microelectronic Wire Bonding
p.3920

A CO₂ Gas Shielded Gas Tungsten Arc and its Application to Welding of Steel Sheets
p.3926

Anodic Bonding of Ag-Impregnated Glass and Reaction of Derived Joints to Reverse Voltage
p.3931

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Effects of Nitrogen on Weld Metal Microstructure...

Effects of Nitrogen on Weld Metal Microstructure and Toughness in Submerged Arc Welding

Abstract:

The effects of nitrogen content on weld metal impact toughness in submerged arc welding were investigated and interpreted in terms of microstructural changes and solid solution hardening. The weld metal impact toughness in as-welded condition decreased with increasing nitrogen content from 110 to 200 ppm. The weld metal microstructure changed with increasing nitrogen content; ferrite with second phase increased at the expense of tough acicular ferrite. In addition to microstructural changes, the microhardness of acicular ferrite increased gradually with the nitrogen content. Therefore, the loss of impact toughness can be attributed to a combination of the effects of microstructural changes and solid solution hardening.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

3906-3911

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.3906

Citation:

Cite this paper

Online since:

March 2007

Authors:

Kook Soo Bang, Woo Yeol Kim, Chan Park, Young Ho Ahn, Jong Bong Lee

Keywords:

Microstructure, Nitrogen, Toughness, Weld Metal

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G. den Ouden, J.G. Verhagen and G.W. Tichelaar: Weld. J. Vol. 54 (1975), 87s.

Google Scholar

[2] W.B. Morrison: Iron and Steelmaking Vol. 6 (1989), p.123.

Google Scholar

[3] G.M. Evans and N. Bailey: Metallurgy of Basic Weld Metal (Abington Publishing, Cambridge 1997).

Google Scholar

[4] Y. Ito, M. Nakanishi and Y. Komiz: Sumitimo Search, No. 21 (1979), p.52.

Google Scholar

[5] K. -s. Bang and H. -s. Jeong: Mat. Sci. and Tech. Vol. 18 (2002), p.649.

Google Scholar

[6] D.R.G. Achar, M. Kocak and G.M. Evans, in: Trends in Welding Science and Technology, edited by S. David and J. Vitek, ASM Int'l (1992), p.327.

Google Scholar

[7] N. Mori, H. Homma, S. Okita and M. Wakabayashi: IIW Doc. IX-1196-81.

Google Scholar

[8] T. Koshino, M. Otawa, T. Tanigaki, T. Takino, Y. Horii, E. Tsunetomi and K. Imai: IIW Doc. II955-81 50 100 150 200 250 160 170 180 190 200 210 220 230 Hardness of acicular ferrite (HV0. 5) Weld metal nitrogen content (ppm).

Google Scholar