Effect of Sn and Zr content on superelastic properties of Ti-Mo-Sn-Zr biomedical alloys

Endoh, Kazuki; Tahara, Masaki; Inamura, Tomonari; Hosoda, Hideki

doi:10.1016/j.msea.2017.07.097

Cited by 25 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, the σ y of solution-treated Ti-alloys is less than 600 MPa, while the average critical stress for slip (σ CSS ) of Ti-Mo-Sn-Zr alloys exhibiting RT superelasticity is 634 MPa [9], and Ti-20Zr-12Nb-2Sn alloy was found in a relatively high σ CSS of approximately 800 MPa until very recently [38]. Therefore, MT is not induced in alloys possessing such a high σ β-α" ; instead, only plastic deformation takes place.…”

Section: Resultsmentioning

confidence: 99%

“…This thus explains well the vanishing superelasticity by merely regulating MT temperature via Mo addition without taking the ω ath phase into consideration. Additionally, since many Ti-based superelastic alloys performed ∆σ less than 200 MPa [9,17], suppressing ∆σ to less than 200 MPa for revealing superelasticity is required; hence, Al addition up to 10 mol%, which possessed ∆σ of 180 MPa, is a crucial prerequisite.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, SME of Ti-Mo-based alloys has been widely investigated [5][6][7][8]. Our group also succeeded in developing RT superelasticity via MT temperature regulation by alloying Zr and Sn to Ti-3 mol% Mo specimens [9]. Besides Ti-Mo alloys, the SME of Ti-Cr-Al [10] and Ti-Ta-Al [11] as well as superelasticity of Ti-Nb-Al [12][13][14] containing Al, have been explored.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Achievement of Room Temperature Superelasticity in Ti-Mo-Al Alloy System via Manipulation of ω Phase Stability

et al. 2022

Self Cite

View full text Add to dashboard Cite

The achievement of room-temperature (RT) superelasticity in a Ti-Mo-Al ternary alloy system through the addition of a relatively high concentration of Al to manipulate the phase stability of the ω phase is realized in this study. The composition of the Ti-6 mol% Mo (Ti-11.34 mass% Mo) alloy was designated as the starting alloy, while 5 mol% Al (=2.71 mass% Al) and 10 mol% Al (=5.54 mass% Al) were introduced to promote their superelastic behavior. Among the alloys, Ti-6 mol% Mo-10 mol% Al alloy, which was investigated for the very first time in this work, performed the best in terms of superelasticity. On the other hand, Ti-6 mol% Mo and Ti-6 mol% Mo-5 mol% Al alloys exhibited a shape memory effect upon heating. It is worth mentioning that in the transmission electron microscopy observation, ω phase, which appeared along with β-parent phase, was significantly suppressed as Al concentration was elevated up to 10 mol%. Therefore, the conventional difficulties of the inhibited RT superelasticity were successfully revealed by regulating the number density of the ω phase below a threshold.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Achievement of Room Temperature Superelasticity in Ti-Mo-Al Alloy System via Manipulation of ω Phase Stability

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, β-Ti shape memory alloys have an attracted attention due to their good biocompatibility and Ni-free biomaterials. Endoh et al have reported that Ti-Zr-Mo-Sn alloys exhibit superelasticity at body temperature for use as biomedical materials [4]. Furthermore, Ni-free Ti-based shape memory alloys in porous form have attracted an additional interest as biomaterials for implantation since the introduction of pores into the bulk material provides ingrowth of living tissues and firm fixation in addition to producing light weight ductile shape memory alloys [5,6].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Kim,

Erlangga,

et al. 2020

View full text Add to dashboard Cite

In this study, a simple and effective way to fabricate highly porous scaffolds with controlled porosity and pore size is demonstrated. Ti-7Zr-6Sn-3Mo shape memory alloy fibers were prepared through a melt overflow process. The scaffolds with porosity of 65-85% and large pores of 100-700 μm in size were fabricated by sintering the as-solidified fibers. Microstructures and transformation behaviors of the porous scaffolds were investigated by means of SEM, DSC and XRD. The scaffolds were composed of β phase at room temperature. Superelasticity with the superelastic recovery strain of 7.4% was achieved by β ↔ α" phase transformation. An effect of porosity on mechanical properties of porous scaffolds was investigated by using compressive test. As the porosity increased from 65% to 85%, elastic modulus and compressive strength decreased from 0.95 to 0.06 GPa and from 27 to 2 MPa, respectively.

show abstract