Braze titanium
AssigneeAlliedSignal Inc.
InventorsJohn Vollmer, Matthew Pohlman
Life of this patent
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Abstract
A method of brazing a Ti-15 Mo-3 Nb-3 Al-0.2 Si base material includes the steps of coating a braze material onto a base material. The braze material comprises substantially only a Ti--Cu--Ni--Zr mixture, with the mixture comprising about 40 wt % Ti. In particular, the braze material may comprise 40Ti-20 Cu-20 Ni-20 Zr. A following step includes heating the braze material and then forming a braze joint between the braze and base materials. The heating step can occur from about 760 to 932.degree. C. and over 15 to 90 minutes.
Claims14
A method of brazing a substantially isomorphous beta phase only titanium base material selected from the group consisting of Ti-15 V-3 Cr-3 Sn-3 Al and Ti-13 V-11 Cr-3 Al, comprising the steps of:
- coating a braze material onto said base material, said braze material comprising substantially of only a Ti--Cu--Ni--Zr mixture comprising about 25-60 Ti wt. %, about 10-25 Cu wt. %, about 15-25 Ni wt. %, and about 15-25 Zr wt. %;
- initially heating said braze material and base material to achieve thermal stability between said braze material and base material, said initial heating being up to a temperature that is not more than a brazing temperature of said braze material;
- subsequently heating said braze material and base material up to said brazing temperature;
- forming a braze joint between said braze and base material.
A method of brazing a Ti-15 Mo-3 Nb-3 Al-0.2 Si base material, comprising the steps of:
- coating a braze material onto said base material, said braze material comprising a Ti--Cu--Ni--Zr mixture of particles having sizes between about 170 to 325 mesh, said mixture comprising about 25-60 wt. % Ti, 10-25 Cu wt. %, about 15-25 Ni wt.%, and about 15-25 Zr wt. %.;
- initially heating said braze material and base material to achieve thermal stability between said braze material and base material, said initial heating being at a rate that does not exceed about 11.degree. C./min and being up to a temperature that is not more than a brazing temperature of said braze material;
- subsequently heating said braze material and base material up to said brazing temperature;
- and
- forming a braze joint between said braze material and base material.
Dependencies are inferred from the claim text.