Abstract
Composites with hard undeformable particles are better suited for creep resistant applications. Alm–TiB2 particulate composite is one such composite. Its flow properties and formability are investigated and presented in the paper. A suitable temperature range for working this particulate composite is ascertained by using uniaxial axysymmetric compression tests and ring compression tests. Warm working is found to be suitable for this composite in the temperature window of 473–523 K.
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Acknowledgments
The authors gratefully acknowledge the support and assistance received from the Department of Metallurgical & Materials Engineering of NITK Surathkal, for carrying out SEM work.
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Appendix
Appendix
Model melt calculation
Atomic weigts of Al = 27, K = 39, Ti = 48, F = 19, B = 11.
0.756 kgms of KBF4, 0.717 kgms of K2TiF6 and 0.594 kgms of Al are reacted to give0.210 kgms of TiB2 and 0.324 kgms of Al.To make the composite Al-5TiB2 3.666 kgms of excess aluminium should be added.
In the present case due to the limitation of the available capacity of melting furnace the amounts have been scaled down to one-sixth of those given above.
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Mishra, R., Alexander, A. & Srinivasan, K. Determination of Warm Working Temperature Range for In Situ Alm–TiB2p Composite. J. Inst. Eng. India Ser. D 96, 15–19 (2015). https://doi.org/10.1007/s40033-014-0049-1
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DOI: https://doi.org/10.1007/s40033-014-0049-1