Influence of short time anneal on recoverable strain of beta III titanium alloy

Cai, Song; Daymond, Mark R.; Ren, Yang; Bailey, David M.; Kay, L.E.

doi:10.1016/j.msea.2012.11.005

Cited by 16 publications

(12 citation statements)

References 39 publications

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“…As expected based on the crystallographic relations described above, the phase transformation strain was found to be anisotropic; the largest value is in the h1 1 0i b direction [2,3]. Thus, techniques that strengthen the h1 1 0i b texture in the loading direction increase the super-elastic property of polycrystalline b Ti [2,21]. To date, the maximum total recovery strain that can be achieved from the b Ti alloy is $4% [3,16,17,[21][22][23].…”

Section: Introductionsupporting

confidence: 53%

“…In this paper, we report our recent work on the in situ synchrotron X-ray diffraction cyclic tensile testing of a b III Ti alloy with the main interest being in the development of the SIM phase transformation and its influence on the internal strains. The deformation mechanism of b III Ti alloy has been under debate in the past; while some researchers believed that this material deformed mainly by twinning and dislocation slip [1,28,29], others found it was deformed by the SIM phase transformation [21,30,31]. Therefore, this study also helps to clarify the role of the SIM phase transformation in this alloy.…”

Section: Introductionmentioning

confidence: 78%

“…Thus, techniques that strengthen the h1 1 0i b texture in the loading direction increase the super-elastic property of polycrystalline b Ti [2,21]. To date, the maximum total recovery strain that can be achieved from the b Ti alloy is $4% [3,16,17,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evolution of lattice strain and phase transformation of β III Ti alloy during room temperature cyclic tension

Cai¹,

Daymond

Ren

et al. 2013

Acta Materialia

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Section: Introductionsupporting

confidence: 53%

Section: Introductionmentioning

confidence: 78%

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Evolution of lattice strain and phase transformation of β III Ti alloy during room temperature cyclic tension

Cai¹,

Daymond

Ren

et al. 2013

Acta Materialia

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“…[17] Thus, an intermediate annealing rather than solution treatment after cold work is always used to improve the pseudo-elastic or superelastic behavior of β-Ti alloys. [4,18] In the current case, the maximum of ∼ 3.5% strain recovery was obtained when the cold drawn wire was heat treated at 600°C for 6 seconds. The Young's modulus is ∼ 62 GPa, the yield and tensile strengths are 356 MPa and 977 MPa, respectively.…”

Section: Resultsmentioning

confidence: 67%

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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“…Annealing is necessary to improve properties, which has been proven in other austenitic stainless steels in technical literature. [7][8][9][10] Daymond [7] reported that extensive annealing at high temperature of heavily cold worked beta III Ti alloy resulted in grain growth, which reduced the elongation due to the lack of work hardening. However, the effects of annealing treatment on the microstructure and mechanical properties of 21-6-9 austenitic stainless steel are seldom reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

Xiong¹,

Zheng²,

Yuan³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. The microstructure and mechanical properties of 0Cr21Ni6Mn9N austenitic stainless steel cold drawn pipe were investigated at various annealing temperatures. It was found that the tensile strength and the yield strength increased slightly, and then decreased with the temperature increasing from 200 to 750 °C. The highest value of tensile strength and yield strength reached 1062 and 942MPa at 600 °C, respectively. However, the elongation has an opposite trend to the tensile strength and yield strength. The microstructure evolution of the cold drawn pipe annealed at different temperatures was observed. The results indicate that when annealed below 550 °C, recovery is dominant. At 550 °C, it is recovery and partial recrystallization. Over 550 °C, complete recrystallization has likely occurred. Moreover, the Cr 2 N particles near the grain boundaries were found, and the amount of precipitates along the grain boundary indexed as M 23 C 6 were increasing at 650-800 °C.

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Influence of short time anneal on recoverable strain of beta III titanium alloy

Cited by 16 publications

References 39 publications

Evolution of lattice strain and phase transformation of β III Ti alloy during room temperature cyclic tension

Evolution of lattice strain and phase transformation of β III Ti alloy during room temperature cyclic tension

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

Effect of Anneal Temperature on Microstructure and Mechanical Properties of 0Cr21Ni6Mn9N cold Drawn Pipe

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