Evolution of Hot Rolling and Phase Transformation Textures in an α″ (Orthorhombic) Phase in Ti-Nb Alloys

S. Banumathy; Rajiv Kumar Mandal; A.K. Singh

doi:10.4028/www.scientific.net/MSF.702-703.872

Paper Titles

In Situ Observation on the Influence of ß Grain Growth on Texture Evolution during Phase Transformation in Ti-6A-4V
p.854

Nanocrystallization and Texture Transformation in the Surface Layer of Copper Induced by Surface Mechanical Attrition
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Determination of the Orientation Relation from Variants Inherited by Phase Transformation
p.862

Determination of Crystallographic Elements (Dislocation and Surface Plane) from Automated TEM Orientation Determination
p.866

Evolution of Hot Rolling and Phase Transformation Textures in an α″ (Orthorhombic) Phase in Ti-Nb Alloys
p.872

Evolution of Texture during Directional Solidification of Giant Magnetostrictive Tb_0.3Dy_0.7Fe_1.95 Alloy
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Restitution of Prior-Austenite Grain Orientation by Microtexture Analysis of Tempered Martensite Structure in 9Cr-1Mo Ferritic Steel
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Textural Evolution Evaluated by EBSD and XRD after Thermal Treatment in Ni-Ti Shape Memory Alloy
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Microstructural Irreversibilities under Thermal Cycling in Ni-Ti-Fe Shape Memory Alloys
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Evolution of Hot Rolling and Phase Transformation Textures in an α″ (Orthorhombic) Phase in Ti-Nb Alloys

Abstract:

This work describes the development of texture during hot rolling of two alloys namely, Ti-12Nb and Ti-16Nb. The alloys have been unidirectionally hot rolled to 80 % reductions at 800°C and air cooled. Both the alloys show the presence of a² (orthorhombic) and small volume fraction of b (bcc) phases in hot rolled condition. The alloy Ti-12Nb exhibit moderate intensity texture while the alloy Ti-16Nb displays quite strong texture. The high overall intensity of texture in alloy Ti-16Nb in 80 % HR specimen can be attributed to the presence of large volume fraction of b phase in comparison to that of the alloy Ti-12Nb. This has been extended to study the textural changes after b solution treatment. This heat treatment consists of two types of phase transformations that are a² ® b ® a² and a² ® b ® a after water quenching and furnace cooling from β phase field.