Effects of Sn and Zr Additions on Phase Constitution and Aging Behavior of Ti-50 mass%Ta Alloys Quenched from &amp;beta; Single Phase Region

Ikeda, Masahiko; Komatsu, Sadao; Nakamura, Yuichiro

doi:10.2320/matertrans.45.1106

Cited by 47 publications

(22 citation statements)

References 7 publications

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“…This result agrees with the estimation of ¢ transus in the Mdt-Bot diagram. 9) More, the values of density obtained from measurement by Archimedes' principle were 4.87, 4.80 and 4.94 g/cm 3 on the Ti-6Mo, Ti-6Mo-2Al-1Sn and Ti-6Nb-3Mo alloys, respectively.…”

Section: Microstructures and Cclm Effectmentioning

confidence: 87%

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics

et al. 2015

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The compositions of ¢ type Ti alloys having shape-memory ability above 400 K were proposed by alloying parameters used in the delectrons concept. They were both Ti-6Mo-2Al-1Sn and Ti-6Nb-3Mo which were designed for improvement of thermal stability in shape memory behavior of Ti-6Mo base alloy, preserving the tensile strength of 700 MPa. Their ingots without contamination from the used crucible were produced by cold crucible levitation melting. They consisted of ¢ and ¡AA phases after the cold roll and heat treatment, and their amounts were depended on values in the alloying parameters. The shape recovery rate of 40 and 25% was measured after 4 cycles in the loadingunloading tests in Ti-6Mo-2Al-1Sn and Ti-6Nb-3Mo, respectively. They showed the As temperature above 490 K and improvement of thermal stability because of a much smaller amount of ½ phase than Ti-6Mo. The alloys showed tensile strength of 682 to 718 MPa. These results were caused by exactly prediction of the phase stability, shape memory ability and tensile strength, using alloying parameters.

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Section: Microstructures and Cclm Effectmentioning

confidence: 87%

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics

et al. 2015

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“…The corrosion resistance of Ti-Ta alloys is superior to that of pure Ti, which increases with increase in Ta content ( Ref 15). The effects of ternary alloying elements on phase constitution, aging behavior, and shape memory behavior of Ti-Ta binary alloys has been investigated (Ref [16][17][18]. The decrease in the martensitic transformation temperature due to Zr, Hf, Sn alloying in Ti-30Ta-X (at.%) was affected by larger number of valence electrons and smaller atomic radius of the alloying elements.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sn and Zr on the Microstructure and Mechanical Properties of Ti-Ta-Based Shape Memory Alloys

Tong

Guo

Zheng

et al. 2011

J. of Materi Eng and Perform

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Ti-Ta binary shape memory alloys have attracted much interest due to the absence of toxic element and the low YoungÕs modulus. However, the effects of the third element on the microstructure and mechanical property had not been well understood. In the present study, the effect of Sn and Zr additions on the microstructure and mechanical property of Ti-35Ta (at.%) alloys has been investigated. The results show that the microstructure of the solution treated Ti-Ta-based alloys compose of equiaxial grains. The alloys consist of b-phase and a¢¢ martensite phase at room temperature, except for the Ti-30Ta-5Sn alloy which consists of only b-phase. This is possibly due to the presence of Sn which provides a stronger b-stabilized effect on quenching compared to Zr addition. The lattice parameter of the b-phase increased with the increase in Sn and Zr content. The addition of Sn and Zr had caused obvious increase in the tensile strength. The corrosion resistance of Ti-Ta-based alloys was also improved by adding Sn.

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“…Selected Ni-free superelastic titanium and shape-memory alloys are listed in Table 8.2 [ 71 ], along with various Ni-free shape-memory alloys that generally also exhibit super-elasticity. These are all roughly divided into four groups: Ti-Nb system alloys [ 72 -84 ], TiMo system alloys [ 85 -89 ], Ti-Ta system alloys [ 90 ], and Ti-Cr system alloys [ 91 ].…”

Section: Super-elastic and Shape-memory Behaviormentioning

confidence: 99%

Titanium Alloys for Biomedical Applications

Niinomi

Boehlert

2015

Springer Series in Biomaterials Science and Engineering

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The low Young's modulus of β-type titanium alloys makes them advantageous for use in medical implant devices, as they are effective in both preventing bone resorption and promoting good bone remodeling. The development of low Young's modulus β-type titanium alloys for biomedical applications is described herein, along with a discussion of suitable methods for even greater modulus reductions. Since there is often occasion to remove implant devices, titanium alloys suitable for removable implants are also described. It has recently been noted that although patients require low Young's modulus titanium alloys, a high modulus is needed by surgeons. Consequently, β-type titanium alloys with a self-tunable Young's modulus are also explored. An evaluation of the effectiveness of low Young's modulus β-type titanium alloys in preventing stress shielding is provided, which is based on the results of animal testing. Means of enhancing the mechanical biocompatibilities of β-type titanium alloys for biomedical applications are also described along with the suitability of those β-type titanium alloys which exhibit super-elastic and shape-memory behavior. Finally, the unique behavior of some β-type titanium alloys for biomedical applications is discussed.

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Effects of Sn and Zr Additions on Phase Constitution and Aging Behavior of Ti-50 mass%Ta Alloys Quenched from β Single Phase Region

Cited by 47 publications

References 7 publications

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics

Effects of Sn and Zr on the Microstructure and Mechanical Properties of Ti-Ta-Based Shape Memory Alloys

Titanium Alloys for Biomedical Applications

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Effects of Sn and Zr Additions on Phase Constitution and Aging Behavior of Ti-50 mass%Ta Alloys Quenched from &beta; Single Phase Region

Cited by 47 publications

References 7 publications

Compositional Optimization of &beta; Type Titanium Alloys with Shape Memory Ability and Their Characteristics

Compositional Optimization of &beta; Type Titanium Alloys with Shape Memory Ability and Their Characteristics

Effects of Sn and Zr on the Microstructure and Mechanical Properties of Ti-Ta-Based Shape Memory Alloys

Titanium Alloys for Biomedical Applications

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Product

Resources

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Effects of Sn and Zr Additions on Phase Constitution and Aging Behavior of Ti-50 mass%Ta Alloys Quenched from β Single Phase Region

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics

Compositional Optimization of β Type Titanium Alloys with Shape Memory Ability and Their Characteristics