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Title: Characterisation of titanium-titanium boride composites processed by powder metallurgy techniques

Abstract

In this work, a detailed characterisation of titanium-titanium boride composites processed by three powder metallurgy techniques, namely, hot isostatic pressing, spark plasma sintering and vacuum sintering, was conducted. Two composites with different volume percents of titanium boride reinforcement were used for the investigation. One was titanium with 20% titanium boride, and the other was titanium with 40% titanium boride (by volume). Characterisation was performed using X-ray diffraction, electron probe micro analysis - energy dispersive spectroscopy and wavelength dispersive spectroscopy, image analysis and scanning electron microscopy. The characterisation results confirm the completion of the titanium boride reaction. The results reveal the presence of titanium boride reinforcement in different morphologies such as needle-shaped whiskers, short agglomerated whiskers and fine plates. The paper also discusses how mechanical properties such as microhardness, elastic modulus and Poisson's ratio are influenced by the processing techniques as well as the volume fraction of the titanium boride reinforcement. - Highlights: Black-Right-Pointing-Pointer Ti-TiB composites were processed by HIP, SPS and vacuum sintering. Black-Right-Pointing-Pointer The completion of Ti-TiB{sub 2} reaction was confirmed by XRD, SEM and EPMA studies. Black-Right-Pointing-Pointer Hardness and elastic properties of Ti-TiB composites were discussed. Black-Right-Pointing-Pointer Processing techniques were compared with respect to their microstructure.

Authors:
 [1]; ;  [2];  [3]
  1. Department of Mechanical Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi-642003 (India)
  2. School of Engineering, Professional Group of Institutions, Coimbatore-641662 (India)
  3. Department of Mechanical Engineering, Info Institute of Engineering, Coimbatore-641107 (India)
Publication Date:
OSTI Identifier:
22163141
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 73; Journal Issue: Complete; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELASTICITY; ELECTRON MICROPROBE ANALYSIS; HOT PRESSING; IMAGE PROCESSING; MICROHARDNESS; MICROSTRUCTURE; MORPHOLOGY; POWDER METALLURGY; SCANNING ELECTRON MICROSCOPY; SINTERING; SPECTROSCOPY; TITANIUM; WHISKERS; X-RAY DIFFRACTION

Citation Formats

Selva Kumar, M., E-mail: sel_mcet@yahoo.co.in, Chandrasekar, P., Chandramohan, P., and Mohanraj, M. Characterisation of titanium-titanium boride composites processed by powder metallurgy techniques. United States: N. p., 2012. Web. doi:10.1016/J.MATCHAR.2012.07.014.
Selva Kumar, M., E-mail: sel_mcet@yahoo.co.in, Chandrasekar, P., Chandramohan, P., & Mohanraj, M. Characterisation of titanium-titanium boride composites processed by powder metallurgy techniques. United States. doi:10.1016/J.MATCHAR.2012.07.014.
Selva Kumar, M., E-mail: sel_mcet@yahoo.co.in, Chandrasekar, P., Chandramohan, P., and Mohanraj, M. Thu . "Characterisation of titanium-titanium boride composites processed by powder metallurgy techniques". United States. doi:10.1016/J.MATCHAR.2012.07.014.
@article{osti_22163141,
title = {Characterisation of titanium-titanium boride composites processed by powder metallurgy techniques},
author = {Selva Kumar, M., E-mail: sel_mcet@yahoo.co.in and Chandrasekar, P. and Chandramohan, P. and Mohanraj, M.},
abstractNote = {In this work, a detailed characterisation of titanium-titanium boride composites processed by three powder metallurgy techniques, namely, hot isostatic pressing, spark plasma sintering and vacuum sintering, was conducted. Two composites with different volume percents of titanium boride reinforcement were used for the investigation. One was titanium with 20% titanium boride, and the other was titanium with 40% titanium boride (by volume). Characterisation was performed using X-ray diffraction, electron probe micro analysis - energy dispersive spectroscopy and wavelength dispersive spectroscopy, image analysis and scanning electron microscopy. The characterisation results confirm the completion of the titanium boride reaction. The results reveal the presence of titanium boride reinforcement in different morphologies such as needle-shaped whiskers, short agglomerated whiskers and fine plates. The paper also discusses how mechanical properties such as microhardness, elastic modulus and Poisson's ratio are influenced by the processing techniques as well as the volume fraction of the titanium boride reinforcement. - Highlights: Black-Right-Pointing-Pointer Ti-TiB composites were processed by HIP, SPS and vacuum sintering. Black-Right-Pointing-Pointer The completion of Ti-TiB{sub 2} reaction was confirmed by XRD, SEM and EPMA studies. Black-Right-Pointing-Pointer Hardness and elastic properties of Ti-TiB composites were discussed. Black-Right-Pointing-Pointer Processing techniques were compared with respect to their microstructure.},
doi = {10.1016/J.MATCHAR.2012.07.014},
journal = {Materials Characterization},
issn = {1044-5803},
number = Complete,
volume = 73,
place = {United States},
year = {2012},
month = {11}
}