Influence of molybdenum content on the microstructure of spark plasma sintered titanium alloys

  • M. Saravana Kumar 1
  • S. Rashia Begum 2
  • M. Vasumathi 2
  • Chinh Chien Nguyen 3
  • Quyet Van Le 3
  • 1 Department of Mechanical Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, Tamil Nadu, India
  • 2 Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, Tamil Nadu, India
  • 3 Laboratory of Energy and Environmental Science, Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam


Five titanium-based alloys containing 4, 8, 12, 16, and 20 wt% molybdenum additive were fabricated by spark plasma sintering process at 1200 ˚C. The samples were scrutinized in terms of relative density, phase evolution, and microstructural development. The relative density reached 99.9% with the molybdenum addition up to 16 wt% but slightly dropped in the sample with 20 wt% additive. In the specimens with 4 wt% Mo, molybdenum solved completely in the matrix and three different phase morphologies were observed, namely continuous α-Ti, laminar α-Ti, and very thin laminar β-Ti. With increasing Mo content to 20 wt%, widespread single β-Ti appeared alongside remained Mo and α-Ti. Ductile fracture mode was dominant in the samples with low Mo contents whilst it changed to brittle in the specimens with higher content of molybdenum.


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Keywords: Titanium, Molybdenum, Spark plasma sintering, Microstructure, Densification


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Influence of molybdenum content on the microstructure of spark plasma sintered titanium alloys
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How to Cite
Saravana Kumar, M., Rashia Begum, S., Vasumathi, M., Nguyen, C. C., & Le, Q. V. (2021). Influence of molybdenum content on the microstructure of spark plasma sintered titanium alloys. Synthesis and Sintering, 1(1), 41-47.

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