A Study of Correlation Between the Paris Equation Coefficients Based on the Test Results for Titanium Alloy Specimens

Kotlyarenko, A. A.; Zinkovskii, A. P.; Podgorskii, K. N.; Glikson, I. L.

doi:10.1007/s11223-016-9769-9

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Li et al 16 proposed a forming-limit prediction model of the TC4 alloy that takes the limit prediction model of the TC4 alloy that takes the strain rate and temperature sensitivity into account and is based on the Marciniak-Kuczynski theory and von Mises yield criterion. Kotlyarenko et al 17 determined the applicability of the correlation between the experimental values of the fatigue-crack propagation rates in the TC4 alloy at various temperatures. Lin et al 18 introduced probability theory into models of the flow behaviour to describe the most probable flow characteristics of the TC4 alloy.…”

Section: Introductionmentioning

confidence: 99%

Hot-deformation behaviour and flow-stress prediction of the TC4 alloy considering strain

Fu¹,

Wang²,

Chen³

et al. 2019

Mater. Tehnol.

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To study the hot-compressive deformation behaviour of the TC4 alloy, isothermal compression tests were conducted at temperatures ranging from 700°C to 900°C, at 100°C intervals, and at strain rates ranging from 0.1 s -1 to 10.0 s -1 . The experimental results showed that the flow stress of the TC4 alloy increases quickly with an increase in the strain, reaches a peak value, and then decreases to a steady value. The results clearly indicated that dynamic recovery and recrystallization occur during the hot-compression tests. The flow stress of the TC4 alloy increases with a decrease in the deformation temperature and an increase in the strain rate. On the basis of the experimental results, a revised constitutive model describing the relationship among the flow stress, strain rate, and forming temperature of the TC4 alloy at elevated temperature was established. The flow-stress values predicted by the constitutive model agreed well with the experimental results.Avtorji so izvajali preizkuse vro~e izotermalne deformacije pod tlakom na zlitini TC4 v temperaturnem obmo~ju med 700°C in 900°C, v intervalih po 100°C in hitrostih deformacije od 0,1 s -1 do 10,0 s -1 . Rezultati eksperimentov so pokazali, da z nara{~ajo~o stopnjo deformacije hitro nara{~a napetost te~enja zlitine TC4. Ko dose`e vrh, za~ne padati in se ustali pri neki konstantni vrednosti. Rezultati so jasno pokazali, da med preizkusi vro~e deformacije pod tlakom pride do dinami~ne poprave in rekristalizacije. Napetost te~enja zlitine TC4 nara{~a z zni`evanjem temperature deformacije in nara{~a s hitrostjo deformacije. Na osnovi rezultatov so avtorji revidirali in potrdili konstitutivni model, ki opisuje zvezo med napetostjo te~enja, hitrostjo in temperaturo deformacije zlitine TC4. Numeri~no napovedana napetost te~enja zlitine se dobro ujema z rezultati eksperimentov.

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Section: Introductionmentioning

confidence: 99%