Characterization of hot deformation behavior of a new near beta titanium alloy: Ti-7333

Fan, Jiangkun; Kou, Hongchao; Lai, Ming-Yang; Tang, Bin; Chang, Hui; Li, Jinshan

doi:10.1016/j.matdes.2013.02.044

Cited by 147 publications

(50 citation statements)

References 29 publications

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“…When deformed in the single β field, an increased internal energy arising from increasing temperature leads to a decreased activation energy. These results are consistent with other reports [21]. It is noted that these Q values are much higher than self-diffusion activation energy for either β titanium (153 kJ/mol) or α titanium (169 kJ/mol) [22].…”

Section: True Stress-true Strain Curvessupporting

confidence: 93%

“…A constitutive equation of the peak flow stress for our alloy is described as: The peak flow stress under various deformation conditions is presented in Figure 5. The error bar in Figure 5 indicates Material/Reference α n Q (kJ/mol) Ti-10V-2Fe-3Al [23] 0.011 2.51 534.0 Ti-5Al-5Mo-5V-3Cr-1Zr [24] 0.009 3.50 275.3 Ti-7333 [21] 0.007 4.13 333.7 Ti-4Al-1Sn-2Zr-5Mo-8V-2.5Cr (this work) 0.006 3.92 592.7…”

Section: True Stress-true Strain Curvesmentioning

confidence: 99%

“…The third peak efficiency domain appears at temperatures from 900 • C to 930 • C with strain rate of 0.001 s −1 to 0.01 s −1 ; a peak efficiency of 60% was observed at about 930 • C and 0.001 s −1 . The high efficiency at these two domains is likely to be dominated by DRV and DRX [21]. The instability map is established according to the irreversible thermodynamics extremum principles used for the large-scale plastic deformation body.…”

Section: Processing Mapmentioning

confidence: 99%

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Investigation of the Deformation Mechanism of a near β Titanium Alloy through Isothermal Compression

Lü

Zhang

et al. 2017

Metals

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This study investigated the hot deformation behavior of Ti-4Al-1Sn-2Zr-5Mo-8V-2.5Cr alloy through isothermal compression tests at temperatures from 780 to 930 • C with strain rates ranging from 0.001 to 1 s −1 . The flow stress decreases with a decreased strain rate and an increased temperature. A constitutive equation was established for this alloy and the dependence of activation energy on temperature and strain rate is discussed. We further proposed a processing map using the dynamic materials model. On the processing map various domains of flow stability and flow instability can be identified. The deformation mechanisms associated with flow stability regions are mainly dynamic recrystallization (DRX) and dynamic recovery (DRV). The flow instability is manifested in the form of the band of flow localizations. The optimum processing conditions are suggested such that the temperature range is from 780 to 880 • C and the strain rate ranges from 0.001 to 0.01 s −1 .

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Section: True Stress-true Strain Curvessupporting

confidence: 93%

Section: True Stress-true Strain Curvesmentioning

confidence: 99%

Section: Processing Mapmentioning

confidence: 99%

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Investigation of the Deformation Mechanism of a near β Titanium Alloy through Isothermal Compression

Lü

Zhang

et al. 2017

Metals

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“…A typical true stress-true strain curve shows continuous flow softening after rapid increase up to a maximum stress of ~150 ± 0.4 MPa at 0.07 strain, which is usual response for β titanium alloys deformed at a temperature slightly below β transus (nearly 100 °C) [6,11,29,30]. Although flow softening has been reported for Ti-10-2-3 alloy deformed above the β transus temperature [11,13], the tendency of β titanium alloys deformed below the transus temperature towards flow softening is stronger [11,30].…”

Section: Resultsmentioning

confidence: 89%

“…Near-net-shape hot forging is an economic manufacturing method for producing large components which results in coveted mechanical properties [6]. Nonetheless, metastable-β titanium alloys, such as Ti-10V-2Fe-3Al (wt.…”

Section: Introductionmentioning

confidence: 99%

Formation of Deformation-Induced Products in a Metastable-β Titanium Alloy during High Temperature Compression

Samiee

Casillas

Ahmed

et al. 2018

Metals

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A metastable-β titanium alloy, Ti-10V-3Fe-3Al (wt. %), was subjected to thermo-mechanical processing including the compression test at 725 • C, which is below the β transus temperature (780 • C), and at strain rate of 10 −3 s −1 . The presence of phases was determined using transmission electron microscopy and X-ray diffraction. Although the dynamic recovery took place together with slip, both deformation-induced α" martensite and ω were detected as other operating mechanisms for the first time in metastable-β titanium alloy deformed in α + β region. The volume fraction of stress-induced α" was higher than that of the same alloy deformed at room temperature due to a higher strain applied. Stress-induced twinning was not operational, which could be related to the priority of slip mechanism at high temperature resulted from thermally-assisted nucleation and lateral migration of kink-pairs.

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Arch Otolaryngol Head Neck Surg

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Characterization of hot deformation behavior of a new near beta titanium alloy: Ti-7333

Cited by 147 publications

References 29 publications

Investigation of the Deformation Mechanism of a near β Titanium Alloy through Isothermal Compression

Investigation of the Deformation Mechanism of a near β Titanium Alloy through Isothermal Compression

Formation of Deformation-Induced Products in a Metastable-β Titanium Alloy during High Temperature Compression

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