Texture Of Ti And Its Alloy

TEXTURE OF TITANIUM AND ITS ALLOYS ,[object Object],[object Object],[object Object],[object Object]

β->α Transformation ,[object Object],[object Object],D α-Ti =10 -19 and D β-Ti =10 -18 m 2 /s β (slow cooling) ->α (lamellar) β (quenching) ->α (martensite) Hexagonal α ’ martensite Orthorhombic α ’’ martensite

Classification of Ti alloys ,[object Object],[object Object],[object Object],[object Object],[object Object],a)lamellar microstructure b) Martensitic microstructure c) Bimodal microstructure α-stabilizer Al,O,N and C β-stabilizer Mo,V,Ta,Nb,Fe,Mn,Cr,Co,Ni,Cu,Si and H Neutral stabilizer Sn and Zr

TEXTURE IN TITANIUM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Cold rolling Texture of pure Ti Initial texture {1013}[1210] basal texture {0001}[0110] Final texture {2115}[0110]

Annealing texture of Ti after cold rolling Ti sheet cold rolled upto 90% and then annealed at T=750°C (2115)[0Ī10](before annealing) (Ī013)[1210] (after annealing)

Hot rolling texture of Ti Hot rolled upto 96% reduction at a temperature between 700 to 900°C {2115}[0110] below 800°C {2110}[0110] and {2118}[8443] (800<T<850°C) {2110}[0110] (T>880°C)

Hot Rolling Texture in Ti-6Al-4V alloy {2110}[0110] T< 850 °C {2110}[0110] and {2110}[0001] 850<T<1000°C {1010}[0001] T> 1000°C

Hot Rolling Texture in high strength Ti alloy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ti-4Al ,[object Object],[object Object],[object Object]

Hot rolling texture of Ti-5Al-2.5Sn ,[object Object],[object Object],[object Object],[object Object]

Hot rolling texture of Ti-6Al-2Sn-4Zr-2Mo ,[object Object],[object Object],[object Object],[object Object]

Transformation texture Ti alloys ,[object Object],[object Object],[object Object],[object Object],[object Object]

Texture development during ECAP of Ti ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Texture formation in ECAE of Ti-6Al-4V Occurs at T=800°C (moderate strain rate) During First pass, deformation occurs by glide of dislocation and twinning. During second pass deformation occurs mainly by twinning.

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],(0001)Pole figure.a) as received b) one ECAE pass c)two ECAE pass in Ti-64

Effect of magnetic field on texture of Titanium ,[object Object],Major cold rolling texture of Ti (2115)[0110] transform to (1013)[1210] by rotation of 30° about c axis. Two driving force for grain growth curvature effect 2 σ /R magnetic driving force H 2 ∆M(cos 2 θ 1 - cos 2 θ 2 ) Growth rate will be more for grain whose <0001> is perpendicular to H. strong basal texture is observed

Effect of texture on mechanical property of Ti alloy

Conclusion- ,[object Object],[object Object],[object Object],[object Object],[object Object]

References- ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Texture Of Ti And Its Alloy

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Texture Of Ti And Its Alloy