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Effect of heat treatment on tensile behaviour of Ti–6Al–5Zr–0.5Mo–0.25Si alloy
Anil Kumar Nag K V U Praveen Vakil Singh
Alloys Volume 29 Issue 2 April 2006 pp 147-154
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https://www.ias.ac.in/article/fulltext/boms/029/02/0147-0154 -
Keywords
Titanium alloy LT26A ;𝛽 solution treatment ;tensile properties ;dynamic strain ageing (DSA). -
Abstract
Tensile behaviour of the near 𝛼 titanium alloy, Ti–6Al–5Zr–0.5Mo–0.25Si (LT26A), was investigated in (𝛼+𝛽) as well as 𝛽 treated condition, over a wide range of temperature from RT to 823 K. It was observed that there were distinct serrations on the load-elongation curves of the 𝛼 + 𝛽 treated material at intermediate temperatures from 623 to 723 K. Tensile tests at 673 K over a wide range of strain rate from 0.052 to 5.60 (× 10-2) s-1 showed negative strain rate sensitivity. Thus, occurrence of DSA was confirmed. It was established from the measured activation energy for DSA that it was essentially controlled by diffusion of the solid solution strengthener silicon in the matrix.
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Author Affiliations
Anil Kumar Nag1 K V U Praveen1 Vakil Singh1
- Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
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Dates
- Published
- April 2006
- Manuscript received
- 20 August 2005
- Manuscript revised
- 15 October 2005
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