Process for optimizing titanium and zirconium additions to alumi

Details Process for optimizing titanium and zirconium additions to alumi Process for optimizing titanium and zirconium additions to alumi

1990-02-15

1992-04-14

Dean, R.

Metal treatment

Compositions

Heat treating

295275, 295277, 148 115A, 420552, B22D 2100, C22C 2100

Patent

active

051044560

ABSTRACT:
A process for optimizing grain refining response of intermetallic TiAl.sub.3 or ZrAl.sub.3 in aluminum welding consumables comprising the steps of processing the intermetallic particles to first form a flake morphology in a master alloy solid, then as a component of the production of an ingot from an aluminum melt, to thermally fracture the flakes, then obtain dissolution of the interface material to increase distribution of the fractured particles and then, by mechanical working, to further fracture and distribute the intermetallic particles. The process is continued during the welding operation by using specific welding parameters during the welding with the consumable such that the intermetallic particles can withstand the weld pool environment in order that they maintain the characteristics and properties which will result in the creation of a small grain size in the weldment.

REFERENCES:
Matsuda et al., "Effect of Additional Element on Weld Solidification Crack Susceptibility of Al-Zn-Mg Alloy (Report I)", Trans. JWRI, vol. 12 (1983), No. 1, pp. 81-87.

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