Alloying element effects in metastable beta titanium alloys

Yolton, C. F.; Froes, F. H.; Malone, Ronald F.

doi:10.1007/bf02686421

Cited by 60 publications

(21 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, diffusivity and partitioning of alloying elements also play important role in the kinetics of the α phase precipitation. It has been reported that the order of diffusivity and partitioning of the β stabilizing elements in present alloys are Mo b Cr b V and Cr N Mo N V, respectively [28]. It is however, quite complicated to determine the relative contributions of these two effects due to uncertainties of the available experimental data.…”

Section: Discussionmentioning

confidence: 97%

Development of α precipitates in metastable Ti-5Al-5Mo-5V-3Cr and similar alloys

Manda

Singh

Chakkingal

et al. 2016

Materials Characterization

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 97%

Development of α precipitates in metastable Ti-5Al-5Mo-5V-3Cr and similar alloys

Manda

Singh

Chakkingal

et al. 2016

Materials Characterization

View full text Add to dashboard Cite

“…In addition, their usage is restricted in cases of high‐wear areas, such as in artificial joints, due to their low wear resistance. Their formability is also low compared to stainless steel, and thus they are difficult to melt or cast 11–15…”

Section: Introductionmentioning

confidence: 99%

Properties of titanium–silver alloys for dental application

Shim

Kim

2005

J Biomed Mater Res

View full text Add to dashboard Cite

The purpose of this study was to develop titanium-silver alloys with biocompatibility, high corrosion resistance, and low ion-release rate, and to evaluate the electrochemical properties of titanium-silver alloys in artificial saliva. Titanium-silver alloys with silver contents ranging from 0 to 4.5 at % in steps of 0.5 at % were designed. The alloys were arc melted, homogenized at 950 degrees C for 72 h, hot rolled to 2 mm in thickness, and finally solution heat treated at 950 degrees C for 1 h and quenched in water. Chemical compositions, phases, hardnesses, electrochemical properties, and the cytotoxicity of the alloys were investigated. The purity of titanium-silver alloys was maintained above 99.9%, because few impurities were introduced through their manufacture. In the case of alloys containing silver in the range 2.0-4.0 at %, the formation of an acicular alpha phase was observed inside the beta phase. The acicular phase got thinner with increasing amounts of silver. This means that silver is a beta-phase stabilizing element in titanium-silver alloys. The hardness value tended to rise with increasing silver content and increased largely over 3.5 at %, and the increase of the hardness value versus pure titanium was about 33%. It is believed that the substantial increases in hardness was due to the effects of solid solution strengthening and of alpha-beta phase transition. Moreover, titanium-silver alloys had higher corrosion resistances than pure titanium. These results mean that silver additions to titanium can improve alloy corrosion resistance. Passive current densities in the potentiodynamic polarization curves were dependent on the chemical compositions of the titanium-silver alloys. However, they did not show a linear relationship with respect to silver contents. Titanium-silver alloys did not show pitting corrosion in artificial saliva. It is believed that silver addition to titanium strengthened the passive film due to titanium dissolution induced by the different electromotive forces of titanium and silver. In the agar overlay test, the cytotoxicity of the titanium-silver alloys and of titanium were none or mild. In summary, titanium-silver alloys had higher mechanical properties and corrosion resistance than titanium, and toxicities that were similar to titanium. Therefore, it is recommended that titanium-silver alloys be adopted cautiously by the biomedical and dental fields.

show abstract

“…There are numerous reports in the literature regarding how a and b stabilizers qualitatively influence the volume fractions [14,[36][37][38]. In this study, the quantitative effects of a stabilizers and b stabilizers on the phase volume fractions were investigated through calculating the index of relative importance (I RI ).…”

Section: S Nomentioning

confidence: 99%