Weld bead electrode for producing same and method of use

Details Weld bead electrode for producing same and method of use Weld bead electrode for producing same and method of use

1986-01-24

1988-01-05

Rutledge, L. Dewayne

Alloys or metallic compositions

Ferrous

Over 0.1 percent aluminum containing, but less than 4 percent

148 24, 219137WM, 21914522, 21914623/146.24, 21914641, 420104, 420126, 420128, C22C 3828, B23K 35368

Patent

active

047175362

ABSTRACT:
Weld bead analysis and electrode capable of producing same, which in multiple pass welding of thick steel plates, results in fine grain structure and high impact strength. The analysis includes as necessary ingredients, titanium, nitrogen and chromiumwith a maximum limitation on auminum, if present. The electrode contains titanium and chromium. The welding is in air and the titanium picks up nitrogen from the air and carries it into the weld bead as micro particulates of titanium nitride, which forms nucleation points for commencing fine grain growth.

REFERENCES:
patent: 3162751 (1964-12-01), Robbins
Tamehiro et al., "Austenite Grain Size of Titanium-Microalloyed Continuously Cast Steel Slabs", Transactions ISIJ, vol. 25, 1985.
Nishio et al., "Effects of Ti and N on Notch Toughness of Synthetic Weld Heat Affected Zone", Transactions of the Japanese Welding Society, vol. 15, No. 2, Oct. 1984, pp. 40-48.

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