Study on the hot deformation behavior of TC4-DT alloy with equiaxed α+β starting structure based on processing map

Xiao, Peng; Guo, Hong Zhen; Shi, Zhenning; Qin, Chun; Zhang, Zhao; Zhang, Yao

doi:10.1016/j.msea.2014.03.047

Cited by 97 publications

(26 citation statements)

References 30 publications

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“…As shown in Figure 7, the Ti-4Al-1Sn-2Zr-5Mo-8V-2.5Cr alloy presents a wider process window in comparison with the other titanium alloys, which confirms the excellent workability of this material [13,18,30]. Previous investigations [30,31] suggest that the microstructural evolution in the stable domains is probably caused by DRX, spheroidizing or DRV. On the other hand, adiabatic shear bands formation, flow localization or flow rotations is likely the cause of flow instability.…”

Section: Processing Mapsupporting

confidence: 66%

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: Processing Mapsupporting

confidence: 66%

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

Lü

Zhang

et al. 2017

Metals

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“…Small strains were employed because obvious dissipation efficiency variation has been aroused with DRX onset and subsequent fast fraction increase [31]. Several efforts have been made to associate the dissipation efficiency with corresponding microstructure evolution during hot deformation of titanium alloys [8,21,32,33]. It can be summarized as:…”

Section: Identification Through Poliak-jonas Criterionmentioning

confidence: 99%

Dynamic softening behavior of TC18 titanium alloy during hot deformation

et al. 2015

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“…(23). Several works [38,39] on processing map for titanium alloys have indicated that dissipation efficiency for DRX process reaches 0.35-0.55. It is in excellent agreement with the result ð2 À 2=ð0:3 þ 1Þ ¼ 0:46Þ for TC18 alloy from Eq.…”

Section: Power Dissipation Efficiencymentioning

confidence: 99%

Correlation between strain-rate sensitivity and dynamic softening behavior during hot processing

Huang

Ning

et al. 2015

Journal of Alloys and Compounds

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Study on the hot deformation behavior of TC4-DT alloy with equiaxed α+β starting structure based on processing map

Cited by 97 publications

References 30 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

Dynamic softening behavior of TC18 titanium alloy during hot deformation

Correlation between strain-rate sensitivity and dynamic softening behavior during hot processing

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