Investigation of ultrasonic indications in Ti alloy (Ti6Al4V) hot formed hemisphere

Hot Working of Ti Aluminide Made through Reaction Synthesis

“…Also, content of lamellar phase was found to be higher for open die forged specimens, indicating deformation under stress gradient and temperature gradients favours such type of microstructures. Similar observations on preferential growth of one phase have been reported on α-β Ti alloy [13].…”

Deformation behaviour of γ+α2 Ti aluminide processed through reaction synthesis

“…Variation in lamellar morphologies can be due to availability of easy path for its growth. This can be explained similar to preferential growth of primary a in transformed b under temperature and stress gradient condition in hot working [19]. Fig.…”

Development of Large-Sized Titanium Alloy Ti6Al4V and Nickel-Based Superalloy Inconel-718 Forgings for Reusable Launch Vehicle-Technology Demonstrator Flight

“…governs the final properties, quality and microstructure of the material. Preheating under neutral/oxidizing atmosphere, forging with sufficient amount of reduction and heat treatment with uniform temperature control are essentially required 1,2 . The alloy has  to  transformation during heating to 995C, known as -transus temperature.…”

“…Further, individual forge stock was forged in a 1500 tonne press below the -transus temperature at a slow rate involving suitable upsetting and drawing operations. This stage of working is important in deciding the ultrasonic quality in the alloy with respect to amenability to inspection 1 . Hence sufficient working in all directions has been imparted.…”