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Tensile Behaviour of Thermal Cycled Titanium (Ti-6Al-4V) Alloy

S. Manikandan, Dr. S. Ramanathan, S. Krishnamohan, D. Vasudevan

Abstract


Titanium is recognized for its strategic importance as a unique lightweight, high strength alloyed structurally efficient metal for critical, high-performance aircraft, such as jet engine and airframe components. Titanium is called as the "space age metal" and is recognized for its high strength-to-weight ratio. Today, titanium alloys are common, readily available engineered metals that compete directly with stainless and Specialty steels, copper alloys, nickel based alloys and composites. Titanium alloys are needed to be heat treated in order to reduce residual stress developed during fabrication and to increase the strength. Titanium (Ti-6Al-4V) alloy is an alpha beta alloy which is subjected to annealing and solution treatment to attain beta phase. This beta phase is maintained by quenching and subsequent aging to increase strength. Thermal cycling process was carried out for heat treated Ti-6Al-4V specimens. Forced air used for cooling. This paper reports on the investigation of tensile behaviour of different Heat treated and thermal cycled Titanium (Ti-6Al-4V) alloy and the micro structural changes.

Keywords


Thermal Cycling, Heat Treatment, Solutionizing, Aging, Tensile Strength

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References


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