Microstructures and mechanical properties of Mn modified, Ti-Nb-based alloys

Microstructure, mechanical properties, and corrosion behavior of new β­type Ti–Mo–Nb based alloys by Mn addition for implant material

“…The hardness value decreased on the addition of Mn because of an increase in the β-phase. It has been reported that α-phase materials have higher elastic modulus values than β-phase materials, with the elastic modulus of the titanium alloy phases increasing in the order of β<α′′<α′<ω [32,36,37]. Hon et al reported that different phases have different elastic modulus; for example, Eα=1.5Eβ and Eω=2.0Eβ [32].…”

“…They were subsequently sanded using a piece of up to 2,000 grade SiC paper and mirrorpolished using pieces of 5, 1, and 0.3 µm micropolish alumina, and etched using a solution of Kroll's reagent (2 mL of HF, 6 mL of HNO 3 , and 92 mL of H 2 O). Vickers hardness measurements on the samples were carried out using a Vickers micro-hardness testing machine (Mitutoyo, Japan) with a 0.3N load for 12 s, and elastic modulus measurements were conducted using an ultrasonic method according to an ASTM-E494-95 standard [31,32].…”

New ternary powder metallurgy Ti alloys via eutectoid and isomorphous beta stabilisers additions

“…Regarding the development of Ti alloys where Mn and Nb were simultaneously added, the work performed is significantly lower and the main two investigations available in literature, to the best knowledge of the authors, are the work of Chen et al 25 via casting and that of Ehtemam-Haghighi et al 26 via powder metallurgy. Specifically, Chen et al 25 prepared a series of Ti–27Nb–xMn alloys (x ~ 0, 1, 3, 5, 7, and 9 wt.%) by means of cold crucible levitation melting in inert argon atmosphere. The alloys were subsequently cold rolled into a plate with a thickness reduction of ~ 60% and further solution treated at 900 °C for 30 min prior to water quenching.…”

“…From literature, binary Ti–Mn and Ti–Nb alloys have been well studied but the potential of the ternary Ti–Mn–Nb alloying system has not been fully exploited as the few works available 25 , 26 did not characterised the alloy in the as-produced state, as the Ti–Mn–Nb alloys were always heat treated, if not also plastically deformed via cold rolling. Moreover, the study of Chen et al 25 considered very high amount of Nb (i.e. 27 wt.%) whereas the study of Ehtemam-Haghighi et al 26 had a fairly high amount of Mn (i.e.…”

Determinación experimental del equilibrio de fases en el sistema Ti- Nb-Mn a temperaturas entre 1150°C y 1200°C

“…Como alternativas se han propuesto aleaciones con Manganeso, el cual además de reducir los costos de fabricación, posee gran biocompatibilidad, así como efectos beneficiosos para el organismo [9][10][11][12]. Adicionalmente, se ha evaluado el uso de aleaciones de Ti-Nb con factibilidad de uso biomédico [13] así como también la aleación Ti-Nb-Mn [14]. Paralelamente, se han evaluado propiedades de una aleación Ti-Ta-Nb-Mn para uso biomédico [15].…”