The invention discloses a preparation method of an AgCuTi
alloy, a preparation method of a foil strip
brazing filler of the AgCuTi
alloy, and products of the AgCuTi
alloy. The preparation method is used for solving problems in the prior art that segregation of conventional AgCuTi alloy is easily caused, element Ti is combined with
oxygen, activity reducing of
brazing filler may be caused in sealing, and in full alloying process, microdefects such as easily caused increasing of grain size and holes are difficult to eliminate, Ag-Ti and Cu-Ti brittle phases are formed from
Ti element, and Ag and Cu, and high quality foil strips are difficult to form via rolling. According to the preparation method, vacuum presintering of a
powder billet at low temperature is carried out, segregation is inhibited, and hot isostatic pressure medium temperature
sintering is adopted, so that grain size and
oxygen content are controlled effectively,
high density alloy with excellent mechanical properties is obtained, and finally foil strip
brazing filler is formed via a plurality of times of direct cold rolling. The preparation method is capable of satisfying requirements on high performance
silver copper titanium foil strip brazing filler used in dissimilar material component sealing, is promising in application prospect, and is worthy of large scale popularization and application.