The use of cast Ti−48Al−2Cr−2Nb in jet engines

Although it has been recognized for almost three decades that titanium-aluminide systems have the potential for significant weight reductions in jet engines, Ti−48Al−2Cr−2Nb has emerged as the first to enter commercial jet engine service. Cast gamma titanium aluminides are evolving from an intriguing idea into the next materials revolution for aircraft engines. Its potential appears to be similar to the changes caused by the introduction of cast titanium alloys in the 1970s.