&lt;2 1 0&gt; Texture in two cold-drawn beta Ti alloys

Cai, Song; Ren, Yang; Kay, L.E.

doi:10.1016/j.scriptamat.2012.11.040

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…Figure 3 shows the texture change in different phases during deformation. Similar to those in other β-Ti alloys, [15,16] the β-phase in this material had a strong {210} β texture, while the ω-phase had a strong texture component in the vicinity of the {1122} ω to {2243} ω planes. The strong {210} β texture in this alloy provides one more evidence to support our previous hypothesis that all meta-stable β-Ti alloys have a tendency to form a {210} β texture instead of the well-known {110} β texture after cold-drawing.…”

Section: Materials and Experimentssupporting

confidence: 72%

Stress-induced phase transformation in a Ti–17Nb–1Cr alloy

Cai¹,

Schaffer²,

Ren

2016

Materials Research Letters

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In situ synchrotron X-ray diffraction was used to study the deformation behavior of a Ti-17Nb-1Cr alloy at room temperature. Stress-induced martensite (SIM) transformation increased the total recoverable strain. A maximum of ∼ 3.5% strain recovery was obtained after proper heat treatment. Unlike other alloys with a bcc crystal structure, the β-phase has a strong (210) β texture, supporting the previous suggestion that all meta-stable β-Ti alloys may have a similar texture instead of the well-known (110) β texture after axisymmetric deformation. The ω-phase has a (2243) ω texture. The (041) α fiber texture in α -phase was formed from the (210) β texture based on their crystal orientation relationship.Keywords: Synchrotron X-ray, Beta Ti Alloy, Omega Phase, Stress-induced Martensite, Texture Impact Statement: This manuscript reports the stress-induced phase transformation in a new β-Ti alloy with large recoverable strain and unique textures that are not widely known.

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Section: Materials and Experimentssupporting

confidence: 72%

Stress-induced phase transformation in a Ti–17Nb–1Cr alloy

Cai¹,

Schaffer²,

Ren

2016

Materials Research Letters

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“…For materials with a bcc crystal structure, such as V, Nb, Ta, Mo, W and Fe, the texture after cold drawing is the well-known h1 1 0i b fiber texture [15]; a similar texture would therefore be expected in cold-drawn b-Ti alloys. However, this is not the case in our recent studies [16,17], where the strong h2 1 0i b fiber texture rather than h1 1 0i b texture was observed in heavily cold-drawn b-III and Ti-15Mo alloys. In this paper, the evolution of texture and stress-induced phase transformation in a metastable b-Ti alloy during the cold-drawing process was tracked by using synchrotron X-ray diffraction on samples that were collected at selected processing steps.…”

Section: Deformation and Texture In B-ticontrasting

confidence: 68%

Discovery of a 〈2 1 0〉-fiber texture in medical-grade metastable beta titanium wire

Cai¹,

Schaffer²,

Ren

et al. 2015

Acta Materialia

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The texture and phase evolution of metastable b-III Ti alloy wires, produced in a medical-grade wire-processing facility, are examined via synchrotron X-ray diffraction. The texture development in the b-phase was interpreted by a simple viscoplastic self-consistent (VPSC) modeling approach. Both the stress-induced martensite and stress-induced omega phase transformations are observed during the early stage of cold deformation. The h1 1 0i b texture is gradually replaced by the h2 1 0i b texture at cold work levels above 50% total area reduction or equivalently 0.70 axial true strain. Formation of the h2 1 0i b -fiber from the combined activity of {1 1 2} and {3 3 2} twinning plus conventional slip is observed and may not directly depend upon the stress-induced phase per se. According to the VPSC model, similar texture should occur in other metastable b-Ti alloys subjected to similar wire processing. These data should help inform process-structure-function towards better wire design in titanium-based medical devices.

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“…Hence, reduction in Young's modulus can be achieved through texture control. The <110> // RD textures are mainly formed as deformation or recrystallization textures: {001}<110>, {111}<110>, {112}<110>, and {111}<112> for sheets, and <110>-and <102>-fibers for wire [5][6][7][8]. Indices without a subscript and with α″ refer to β and martensite phases, respectively.…”

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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<2 1 0> Texture in two cold-drawn beta Ti alloys

Cited by 8 publications

References 21 publications

Stress-induced phase transformation in a Ti–17Nb–1Cr alloy

Stress-induced phase transformation in a Ti–17Nb–1Cr alloy

Discovery of a 〈2 1 0〉-fiber texture in medical-grade metastable beta titanium wire

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

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