M Saravana Kumar - Department of Mechanical Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, Tamil Nadu, India
S. Rashin Begum - Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, Tamil Nadu, India
M Vasumathi - Department of Mechanical Engineering, College of Engineering, Anna University, Chennai, Tamil Nadu, India
Chinh Chien Neguyen - Laboratory of Energy and Environmental Science, Institute of Research and Development, Duy Tan University, Da Nang ۵۵۰۰۰۰, Vietnam- Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang ۵۵۰۰۰۰, Vietnam
Quyet Van Le - Laboratory of Energy and Environmental Science, Institute of Research and Development, Duy Tan University, Da Nang ۵۵۰۰۰۰, Vietnam- Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang ۵۵۰۰۰۰, Vietnam

Five titanium-based alloys containing ۴, ۸, ۱۲, ۱۶, and ۲۰ wt% molybdenum additive were fabricated by spark plasma sintering process at ۱۲۰۰ °C. The samples were scrutinized in terms of relative density, phase evolution, and microstructural development. The relative density reached ۹۹.۹% with the molybdenum addition up to ۱۶ wt% but slightly dropped in the sample with ۲۰ wt% additive. In the specimens with ۴ 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 ۲۰ 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.

Titanium, Molybdenum, Spark plasma sintering, Microstructure, Densification