Patent ID: 9057121
Filing Date: 2015-06-16
Classification: C22C,C22F,F01N

Abstract:
1. A method for manufacture of titanium alloy for use in a high temperature and high stress environment, comprising: providing a titanium alloy consisting essentially of, in weight %, 0.2 to 0.5 iron, 0.02 to 0.12 oxygen, 0.15 to 0.6 silicon and balance titanium and incidental impurities; followed by performing a first heat treatment of said titanium alloy at a first temperature that is above the temperature where a precipitate phase begins to dissolve and below a temperature where the titanium alloy has a structure that is greater than 50% of a beta phase; followed by cold rolling said titanium alloy to a desired thickness; followed by performing a second heat treatment of said titanium alloy at a second temperature that allows precipitation of second phase particles in the titanium alloy; and followed by performing a third heat treatment of said titanium alloy at a third temperature to recrystallize the titanium alloy without dissolving precipitate particles.