The effect of densification on hardness of Ti, Ti-6Al-4V, Ti-34Nb-25Zr alloy produced by spark plasma sintering. (2021)

• Record Type: Journal Article
• Authors: Mahundla, M.R.; Matizamhuka, W.R.; Shongwe, M.B.
• Is Part Of: Materials today. Volume 38(2021)Supplement Part 2
• Page Start: 605
• Page End: 608
• Publication Date: 2021
• Subjects: Spark plasma sintering -- Densification -- Microhardness -- Mechanical alloying -- Sintering profiles; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.03.468
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Titanium alloys are often used owing to their superior mechanical properties such as hardness. The sintered samples of Ti, Ti-6Al-4V (Ti-64) and Ti-34Nb-25Zr (TNZ) were produced through powder metallurgy route comprising of mechanical alloying and spark plasma sintering. The samples were mechanically alloyed at 500 rpm and sintered at 1200 °C, heating rate of 100 °C/min, pressure of 50 MPa and holding time of 10 min. The sintered samples were characterized for densification and Vickers microhardness values of Ti, Ti-64 and TNZ were 371.41, 385.48 and 590.22 HV at 0.5 kg load, respectively. Densification values were between 97 and 100%. Hardness of a material is directly affected by its densification.