About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Processing-Microstructure-Property Relationships of Titanium and Titanium Alloys
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Presentation Title |
Microstructure Evolution and Mechanical Behaviour of Two Phase (α+β) Ti-6Al-4V Alloy : An Effect of Heat Treatment Temperature and Duration |
Author(s) |
Jagadeesh Babu S M, Manjesh Kumar Mishra |
On-Site Speaker (Planned) |
Jagadeesh Babu S M |
Abstract Scope |
In the present study, effect of heat treatment on the microstructure evolution and mechanical behaviour of the Ti-6Al-4V (α+β) alloy was investigated. The samples of Ti-6Al-4V alloy were heat treated at the temperature of 900 °C for the duration 1hr-to-6 hrs followed by water quenching. Room temperature tensile tests were conducted for as-received and heat-treated samples at the strain rate of 1×10-3 s-1.Vickers hardness of the as received and heat treated Ti-6Al-4V alloy was measured using the load of 500g for the dwell time 10 sec. Microstructure examinations were made using optical and scanning electron microscopy (SEM), which revealed morphological changes (banded structure to equiaxed structure) and also the modification in volume fraction of alpha and beta phases. It also found that, there is a occurrence of grain growth with increase in the duration of heat treatment. The tensile strengths of the samples were ranged from ~750 N/mm2 to ~960 N/mm2, hardness values ranged from ~350 HV to ~485 HV depending upon duration of heat treatment. The stress-strain behaviour could be explained with the help of changes in grain morphology and the volume fractions of the alpha and beta phases. |