Structure, mechanical properties, and grindability of dental Ti–Zr alloys

Abstract

Structure, mechanical properties and grindability of a series of binary Ti-Zr alloys with zirconium contents ranging from 10 to 40 wt% have been investigated. Commercially pure titanium (c.p. Ti) was used as a control. Experimental results indicated that the diffraction peaks of all the Ti-Zr alloys matched those for alpha Ti. No beta-phase peaks were found. The hardness of the Ti-Zr alloys increased as the Zr contents increased, and ranged from 266 HV (Ti-10Zr) to 350 HV (Ti-40Zr). As the concentration of zirconium in the alloys increased, the strength, elastic recovery angles and hardness increased. Moreover, the elastically recoverable angle of Ti-40Zr was higher than of c.p. Ti by as much as 550%. The grindability of each metal was found to be largely dependent on the grinding conditions. The Ti-40Zr alloy had a higher grinding rate and grinding ratio than c.p. Ti at low speed. The grinding rate of the Ti-40Zr alloy at 500 m/min was about 1.8 times larger than that of c.p. Ti, and the grinding ratio was about 1.6 times larger than that of c.p. Ti. Our research suggested that the Ti-40Zr alloy has better mechanical properties, excellent elastic recovery capability and improved grindability at low grinding speed. The Ti-40Zr alloy has a great potential for use as a dental machining alloy.

Effect of Indium Content on the Microstructure, Mechanical Properties and Corrosion Behavior of Titanium Alloys

“…Several Ti-X binary alloys have been developed, such as Ti-Nb [5][6][7], Ti-Ag [8,9], Ti-Au [10], Ti-Hf [11], Ti-Mn [12], Ti-Cr [13,14], Ti-Mo [15], Ti-Sn [16], Ti-Zr [17][18][19], Ti-Ta [20,21], Ti-Co [22], Ti-Pd [23], Ti-Ge [24] and Ti-Cu [25] alloys. The mechanical properties of Ti alloys are influenced by their microstructure, which, in turn, depends on chemical composition and synthetic processing.…”

Development of Ti‐Ag‐Fe ternary titanium alloy for dental application

“…Figure 15 shows the varying tendency of microhardness along with the increasing of alloying elements content for some newly developed cast titanium alloy. 5,6,12,13,48,49,51 Generally, all alloys exhibit an increase in microhardness with the addition of alloying elements. The Ti-5Ag-2.5Fe alloy has the largest microhardness values among all alloys except for Ti-10Cr alloy.…”

“…1,2 However, the insufficient strength and poor wear resistance of unalloyed titanium (Ti) was often complained. 3,4 Because the properties of unalloyed titanium are not suitable for certain purposes, many titanium alloys, such as titanium-copper 3,[5][6][7] alloys, titanium-silver alloys, [6][7][8][9][10] titanium-hafnium alloys, 11,12 and titanium-zirconium alloys 13 have been developed for dental application, and their properties have been studied mainly to improve the strength and castability of pure titanium.…”

Elastic Properties of As-Solidified Ti-Zr Binary Alloys for Biomedical Applications

“…9,10) Concerning elastic properties of Ti-Zr alloys, Ho et al 11) investigated mechanical properties of a few cast Ti-Zr alloys with Zr concentration of up to 40 mass% (25.9 at%) and reported that their moduli of elasticity in bending were higher than that of pure Ti. Correa et al 12) measured dynamic elasticity modulus of three Ti-Zr binary alloys containing 5, 10 and 15 mass% Zr at room temperature using a torsion pendulum.…”