TY - JOUR
T1 - Densification and microstructures of hybrid sintering of titanium alloy
AU - Ayodele, O. O.
AU - Awotunde, M. A.
AU - Shongwe, M. B.
AU - Obadele, B. A.
AU - Babalola, B. J.
AU - Olubambi, P. A.
N1 - Funding Information:
The authors would like to appreciate National Research Foundation (NRF), South Africa for funding this work
Publisher Copyright:
© 2019 Elsevier Ltd.
PY - 2019
Y1 - 2019
N2 - Powder metallurgy has gained relevance particularly in processing complex components widely used in extreme service environments. With the huge success of powder metallurgy and rising technological demands came the need to fabricate larger components for industrial applications. Hybrid sintering (HSPS) has become a viable route to consolidate large and fully dense components owing to its unique heating system. The hybrid technique incorporates a combined system of spark plasma sintering (SPS) and hot pressing (HP) as a means of providing even heat distribution within the regime of the components. In this work, Ti64 alloy was produced using HSPS and SPS with a view to comparing the resulting bulk composites in each case. Uniformity was maintained in the sample diameter and sintering parameters were also kept constant in both cases for effective comparison purposes. The samples (60 mm) were fabricated and the resulting mechanical properties and microstructures of HSPSed and SPSed composite were studied. Results showed that HSPSed sample attained a densification of 98.9%, with Vickers micro-indentation hardness of 387 HV0.1, as compared with SPS-sample with densification of 97.9% and micro-hardness value of 378 HV0.1.
AB - Powder metallurgy has gained relevance particularly in processing complex components widely used in extreme service environments. With the huge success of powder metallurgy and rising technological demands came the need to fabricate larger components for industrial applications. Hybrid sintering (HSPS) has become a viable route to consolidate large and fully dense components owing to its unique heating system. The hybrid technique incorporates a combined system of spark plasma sintering (SPS) and hot pressing (HP) as a means of providing even heat distribution within the regime of the components. In this work, Ti64 alloy was produced using HSPS and SPS with a view to comparing the resulting bulk composites in each case. Uniformity was maintained in the sample diameter and sintering parameters were also kept constant in both cases for effective comparison purposes. The samples (60 mm) were fabricated and the resulting mechanical properties and microstructures of HSPSed and SPSed composite were studied. Results showed that HSPSed sample attained a densification of 98.9%, with Vickers micro-indentation hardness of 387 HV0.1, as compared with SPS-sample with densification of 97.9% and micro-hardness value of 378 HV0.1.
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U2 - 10.1016/j.matpr.2019.12.297
DO - 10.1016/j.matpr.2019.12.297
M3 - Conference article
AN - SCOPUS:85090134638
SN - 2214-7853
VL - 28
SP - 781
EP - 784
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 2nd International Conference on Recent Advances in Materials and Manufacturing Technologies, IMMT 2019
Y2 - 20 November 2019 through 22 November 2019
ER -