Enhancement of uniform elongation in high strength Ti–Mo based alloys by combination of deformation modes

Min, Xiaohua; Tsuzaki, Kaneaki; Emura, Satoshi; Tsuchiya, Koichi

doi:10.1016/j.msea.2011.02.071

Cited by 113 publications

(53 citation statements)

References 28 publications

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“…On the other hand, the present authors 16) reported that the change in the tensile properties in Ti-Mo base alloys with the Mo equivalency from 10.3 to 24.8 mass% (Table 3), and found that a combination of high yield strength and significant uniform elongation can be achieved when the Mo equivalency is between 15.3 and 18.7 mass% as shown in Fig. 1.…”

Section: Discussionmentioning

confidence: 49%

“…In the previous study, the present authors 16) found that a combination of the above-mentioned twinning and slip deformation modes is an effective for achieving the high yield strength and large uniform elongation in Ti-10Mo-2Fe and Ti-15Mo-5Zr alloys among Ti-Mo base alloys as shown in Fig. 1, where the Mo equivalency was designed to be between 15.3 and 18.7 mass%.…”

Section: Introductionmentioning

confidence: 83%

“…As mentioned in Section 1, Ti-15Mo alloy shows the high corrosion resistance and large uniform elongation, but the low yield strength. In addition, Ti-10Mo-2Fe alloy shows a combination of high yield strength and significant uniform elongation, 16) while its corrosion resistance could be lower than that in Ti-15Mo alloy, although the corrosion test was not carried out. Here, it is should be emphasized that Ti-15Mo-5Zr alloy shows the high yield strength, significant uniform elongation and high corrosion resistance.…”

Section: Discussionmentioning

confidence: 99%

“…24,25) Matsugi et al 26) reported that a ratio of weight loss to initial weight obtained from the Ti-10Mo-2Fe deformation mode Slip Twinning Fig. 1 Changes in the yield strength (YS) and the uniform elongation (uEL) against the Mo equivalency in Ti-Mo base alloys, 16) showing that a combination of high strength and significant elongation can be achieved at the Mo equivalency between 15.3 and 18.7 mass% (solid marks).…”

Section: Introductionmentioning

confidence: 99%

“…As shown in Fig. 2 16) the change in the crevice corrosion resistance has not been investigated in the case of an increase in the Bo of 2.8232, which is determined as the atomic compositional average of above-mentioned Bo values on the basis of the analyzed chemical compositions. In addition, the tensile property of the alloy with the larger Bo is needed to further confirm when the Mo equivalency is larger than that of 18.7 mass% as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Strength, Ductility and Corrosion Resistance in Ti-Mo Base Alloys by Controlling Mo Equivalency and Bond Order

et al. 2011

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The crevice corrosion resistance in high chloride and high acidic solution at high temperature in Ti-15Mo-5Zr and Ti-15Mo-5Zr-1Fe alloys and the tensile properties at ambient temperature in Ti-15Mo-5Zr-1Fe alloy were investigated in this study. The crevice corrosion resistance in Ti-15Mo-5Zr alloy with a Mo equivalency of 18.2 mass%, which was previously reported to show a combination of the high yield strength and the significant uniform elongation, was almost twice as high as that in Ti-15Mo alloy when the bond order (Bo) increased from 2.8126 to 2.8232. A linear correlation between the crevice corrosion resistance and the Bo was confirmed in the Ti-Mo base alloys with the Bo between 2.7900 and 2.8232. Although the high crevice corrosion resistance, Ti-15Mo-5Zr-1Fe alloy with a Mo equivalency of 21.2 mass% showed high yield strength but negligible uniform elongation due to the deformation by dislocation slip. This study suggested that the two parameters of the Mo equivalency and the Bo are useful for an optimization of strength, ductility and corrosion resistance in Ti-Mo base alloys.

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Section: Discussionmentioning

confidence: 49%

Section: Introductionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of Strength, Ductility and Corrosion Resistance in Ti-Mo Base Alloys by Controlling Mo Equivalency and Bond Order

et al. 2011

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Improvement of Strength‐Ductility Tradeoff in β Titanium Alloys Through Twinning and Dislocation Slip Combined Deformation

Min

Emura

et al. 2016

Proceedings of the 13th World Conference on Titanium

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This study provides an novel approach for improving the strengthductility tradeoff through the {332}<113> twinning and dislocation slip combined deformation. Two methods are found to be effective for controlling the combination of twinning and slip deformation modes on a large scale: one is the laminated macrocomposite by using the twinning-type Ti-10Mo-1Fe alloy and the slip-type Ti-10Mo-3Fe alloy; the other is the pre-strain induced twins and subsequent precipitated omega phase by using the twinning-type Ti-15Mo alloy. On the basis of twinning and slip combined deformation, the beta Ti-Mo base alloys exhibit the enhanced uniform elongation in range of 8-15% at the yield strength level of 800-1000 MPa.

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Effect of Solution Treatment on Microstructures and Properties of Ti‐2Al‐9.2Mo‐2Fe Alloy

Li¹,

Lee²,

Lee³

et al. 2016

Proceedings of the 13th World Conference on Titanium

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An effect of solution treatment on microstructures and tensile properties of a new high strength Ti-2Al-9.2Mo-2Fe alloy has been investigated under the wide variety of solution conditions. The result shows that the solution treatment controls the stability of the matrix and the grain size. With increasing the solution temperature, the ductility increases but the strength decreases. The Ti-2Al-9.2Mo-2Fe alloy in ST condition has moderate strength levels (800-1,000 MPa) with an excellent ductility (20%~40%). The elastic modulus of the alloy in ST condition is ranging from 63 to 84 GPa, which is lower than other commercial beta alloys. Especially, solution above the transus temperature leads to equiaxed and coarsen grains, and results in well-balanced properties among strength and modulus and ductility. In addition, the properties can be also adjusted by subsequent aging treatment for a given requirement.

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Enhancement of uniform elongation in high strength Ti–Mo based alloys by combination of deformation modes

Cited by 113 publications

References 28 publications

Optimization of Strength, Ductility and Corrosion Resistance in Ti-Mo Base Alloys by Controlling Mo Equivalency and Bond Order

Optimization of Strength, Ductility and Corrosion Resistance in Ti-Mo Base Alloys by Controlling Mo Equivalency and Bond Order

Improvement of Strength‐Ductility Tradeoff in β Titanium Alloys Through Twinning and Dislocation Slip Combined Deformation

Effect of Solution Treatment on Microstructures and Properties of Ti‐2Al‐9.2Mo‐2Fe Alloy

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