Brazing titanium aluminum alloy components

An assembly comprising:

• a first part comprising a TiAl alloy and a layer of a braze material on a joint surface of the first part, wherein the braze material comprises at least 99% by weight aluminum;
• a second part comprising a TiAl alloy, wherein the first part and second part contact one another to define a joint region, wherein the joint region comprises the layer of the braze material interposed between the second part and the joint surface of the first part;
• and
• a heat source configured to heat at least the braze material in the joint region to at least partially melt the layer of braze material.

A method comprising:

• electroplating a braze material comprising aluminum on a joint surface of a first part comprising a titanium aluminum (TiAl) alloy;
• positioning a second part in contact with the first part to define a joint region, wherein the joint region comprises the braze material interposed between the second part and the joint surface of the first part;
• and
• heating the joint region to at least partially melt the braze material and to form a braze joint that joins the first part to the second part.