high strength, high ductility, the thermal structure in the gamma alumina is titanium alloy and its manufacturing method

摘要

The present invention in atomic weight% to gajyeoseo excellent mechanical properties at high temperatures as well as room temperature even in the high-strength heat-resistant structural titanium aluminide alloy to facilitate the general mechanical processing at room temperature, Al: 40-43%, Cr: 1-4%, Nb: 4% or less, B: 0.3-2.5%, and the remainder Ti and unavoidable impurities or consists of number, or Al: 43-47%, Cr: 1-4%, Nb: 4% or less, B: 0.1 -0.5%, and the rest is Ti and a heat-resistant structural systems gamma titanium aluminide alloy and an atomic weight% of a high strength, high ductility comprising the inevitable impurities, Al: 40-43%, Cr: 1-4%, Nb: 4 % or less, B: 0.3-2.5%, and the remainder Ti and unavoidable impurities or consists of number, or Al: 43-47%, Cr: 1-4%, Nb: 4% or less, B: 0.1-0.5% and the other is a heat treatment for 1-72 hours and the Ti alloy consisting of unavoidable impurities, the cast body and the material to be processed in the cast body at 900-1400 ℃ Having the fine crystal grains of 10-100㎛ performing provides a method for producing high strength, high heat-resistant structural systems gamma titanium aluminide alloy ductility.