Deformation behaviour of γ+α2 Ti aluminide processed through reaction synthesis

Gupta, Rohit; Pant, Bhanu; Kumar, V. Anil; Agarwala, Vijaya; Sinha, P. P.

doi:10.1016/j.msea.2012.08.016

Cited by 12 publications

(1 citation statement)

References 29 publications

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“…(Kim et al, 1992;Goral et al, 2009;Gupta et al, 2013). However, that covalent bond and metallic bond coexist in such alloys makes them show ceramic properties, namely poor ductility and fracture toughness which are the main barriers to their plastic deformation (Kim et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Effects of Hydrogen on Softening Mechanism of Ti-45Al-5Nb-0.8Mo-0.3Y Alloy Deformed at High Temperatures

Zong

Ding

Wang

et al. 2014

Procedia Engineering

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The softening mechanism of unhydrogenated Ti-45Al-5Nb-0.8Mo-0.3Y alloy and Ti-45Al-5Nb-0.8Mo-0.3Y alloy with 1.5 at.% hydrogen addition was investigated in the temperature range between 1000 and 1200 °C and the strain rates of 0.01 and 0.1 s -1 , carried out on the Gleeble-1500D thermomechanical simulation system. The results showed that the flow stress of the hydrogenated alloy was lower than that of the unhydrogenated alloy. As deformed at 1200 °C and strain rate of 0.01s -1 , the peak stress of the hydrogenated alloy was decreased by 25.31% compared with that of the unhydrogenated alloy. The softening of the hydrogenated alloy was principally attributed to hydrogen-induced dynamic recrystallization and hydrogen-increased B2 phase .

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