Anisotropy of Young's Modulus in a Ti-Mo-Al-Zr Alloy with Goss Texture

Shinohara, Yoshikazu; Narita, Daiki; Tahara, Masaki; Hosoda, Hideki; Inamura, Tomonari

doi:10.2320/matertrans.mi201505

Cited by 8 publications

(4 citation statements)

References 17 publications

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“…The formation of Goss texture of {110} β <001> β has been reported only in a few β-type Ti alloys such as Ti-Mo-Al-Zr, Ti-Zr-Nb-Sn-Mo, and Ti-Nb-Sn. [40][41][42] Although the cause of the change in recrystallization texture due to the change in Sn or Nb content is not clear at present, it is worth noting that the development of the {110} β <001> β texture is very beneficial to achieve low Young's modulus because Young's modulus is minimized along the <001> β direction in β-type Ti alloys.…”

Section: Recrystallization Texturementioning

confidence: 99%

“…[ 34,38,39 ] Recently, it has been reported that very low Young's moduli in the range of 31.5–44 GPa can be achieved in Ti–Mo–Al–Zr, Ti–Zr–Nb–Sn–Mo, and Ti–Nb–Sn alloys by the formation of Goss texture of {110} β <001> β . [ 40–42 ] In particular, a bone‐like elastic modulus of 31.5 GPa was achieved in a Ti–15Nb–5.5Sn (at%) alloy due to the formation of a strong {110} β <001> β texture and the suppression of the α″ martensite phase and ω phase. [ 42 ]…”

Section: Introductionmentioning

confidence: 99%

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Achievement of Ultralow Elastic Modulus through Optimization of Phase Stability and Recrystallization Texture in Ti–Nb–Fe–Sn Alloys

et al. 2023

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Ti–Nb–Fe–Sn alloys with relatively low Nb content, located near the phase boundary of (β + ω)/β, are designed on the basis of electron‐to‐atom (e/a) ratio, d‐electron alloy design concept, and Mo equivalent (Moeq) aiming at low Young's modulus comparable to human bone. The effect of Sn content and Nb content on the microstructure and the mechanical properties is investigated in Ti–5Nb–3Fe–(0–6)Sn (at%) and Ti–(3–9)Nb–3Fe–4Sn (at%) alloys. The composition dependence of Young's modulus and tensile strength of Ti–Nb–Fe–Sn alloys is analyzed in terms of the phase stability, ω phase, and recrystallization texture. Both Nb and Sn are effective in suppressing the athermal ω phase and stabilizing the β phase. The recrystallization texture is strongly influenced by the content of Sn and Nb. A strong {110}β<001>β Goss texture is formed in the Ti–5Nb–3Fe–(2–4)Sn and Ti–(3–5)Nb–3Fe–4Sn alloys. The Ti–5Nb–3Fe–4Sn alloy exhibits an exceptionally low Young's modulus of 30 GPa due to the combined effects of low stability of the β phase, a small amount of ω phase, and a strong Goss texture.

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Section: Recrystallization Texturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Achievement of Ultralow Elastic Modulus through Optimization of Phase Stability and Recrystallization Texture in Ti–Nb–Fe–Sn Alloys

et al. 2023

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“…Goss-oriented ({110}<001>) and <001>-fibers are dominantly formed as a recrystallization texture in sheet and cold-groove-rolled (hereafter, simply groove-rolled) wire materials, respectively. In β-Ti, the Young's modulus is lowest along <001> [10,12] and the development of this orientation is effective to reduce the Young's modulus in both sheet and wire materials [11,13]. Particularly for wire materials, it was observed that: (1) stress-induced martensitic transformation (SIMT) from β (bcc) to α″ (corthorhombic) occurs during groove-rolling and (2) the <001>-fiber developed by severe deformation after heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Effect of cross-sectional area reduction rate and alloy composition on the formation of <001>-fiber texture in Ti-Mo-Al-Zr alloy wire

et al. 2020

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Texture formation in Ti-7Mo-8Al-6Zr cold-groove-rolled alloy wires was investigated and compared to that of Ti-5.5Mo-8Al-6Zr. Irregularly textured <001>-fiber was formed in Ti-5.5Mo-8Al-6Zr. The Ti-7Mo-8Al-6Zr cold-groove-rolled wire mainly composed of the β phase though α″ martensite was induced by cold-groove-rolling in the Ti-5.5Mo-8Al-6Zr alloy. From the TEM observations of the severely deformed cold-rolled sheet, α″ martensite was assumed to be induced during cold-groove-rolling and trace α″ was assumed to be retained after cold-groove-rolling. This texture is common in bcc metals and corresponds to the <010>α″ -fiber which is formed in the Ti-5.5Mo-8Al-6Zr alloy when the lattice correspondence between β and α″ is considered. On the other hand, the <001>-fiber was strongly developed in the cold-groove-rolled wire with a reduced cross sectional area of 98% following solution treatment, while this texture was not observed in the specimen with a 60% reduced cross sectional area. The texture formed in solution-treated Ti-7Mo-8Al-6Zr alloy wire was similar to that of the Ti-5.5Mo-8Al-6Zr alloy, although the dominant phase in the cold-groove-rolled specimen differed.

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“…Indeed, Young's modulus along the RD decreased in sheets with Goss orientation and in coldgroove-rolled wires with ©001ª ¢ -fiber. 24,28) With this background, we state that the formation of Goss orientation is advantageous for biomedical SMAs and implant materials. In our previous study, we investigated the effect of thermomechanical treatment on texture formation in Ti5.5Mo8Al6Zr (mol%) alloy sheets.…”

Section: Introductionmentioning

confidence: 99%

Goss Orientation Evolution in Ti–5.5Mo–8Al–6Zr Shape Memory Alloy upon Heat Treatment

et al. 2019

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The effect of heat treatment temperature on texture formation in Ti5.5Mo8Al6Zr (mol%) alloy sheets was systematically investigated in this study. ¡AA martensite was induced by cold-rolling. Although the deformation texture of ¡AA martensite could not be detected, the formation of f130g ¡ 00 h3 10i ¡ 00 and (100) ¡AA [010] ¡AA textures was proposed. The specimen heat-treated at 1073 K or higher consisted of a single ¢ phase, and Goss, {110} ¢ ©113ª ¢ , and Brass orientations were formed as the recrystallization textures. The Goss orientation, which is irregular for ¢-Ti alloys, developed with increasing heat treatment temperature, and became the dominant component in the specimens heat-treated at 1173 K. The specimen heat-treated at 973 K consisted of the ¢ + ¡ phase. {113} ¢ ©110ª ¢ , {113} ¢ ©141ª ¢ , {223} ¢ ©252ª ¢ , {223} ¢ ©692ª ¢ , and {332} ¢ ©113ª ¢ were formed in the ¢ phase, whereas f11 20g ¡ h1 100i ¡ f11 22g ¡ h1 100i ¡ was formed in the ¡ phase. Transmission electron microscopy observations revealed that the specimen heat-treated at 973 K was not completely recrystallized. This microstructural difference led to a difference in texture components between the specimens heat-treated at 973 K and at 1073 K or higher.

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Anisotropy of Young's Modulus in a Ti-Mo-Al-Zr Alloy with Goss Texture

Cited by 8 publications

References 17 publications

Achievement of Ultralow Elastic Modulus through Optimization of Phase Stability and Recrystallization Texture in Ti–Nb–Fe–Sn Alloys

Achievement of Ultralow Elastic Modulus through Optimization of Phase Stability and Recrystallization Texture in Ti–Nb–Fe–Sn Alloys

Effect of cross-sectional area reduction rate and alloy composition on the formation of <001>-fiber texture in Ti-Mo-Al-Zr alloy wire

Goss Orientation Evolution in Ti–5.5Mo–8Al–6Zr Shape Memory Alloy upon Heat Treatment

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