The effects of hydrogen on deformation and cross slip in a BCC titanium alloy

Morasch, K. R.; Bahr, David F.

doi:10.1016/s1359-6462(01)01103-4

Cited by 30 publications

(11 citation statements)

References 9 publications

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“…Birnbaum and Sofronis specifically demonstrate that apparent hydrogen-induced hardening can result from slip localization [25]. A similar trend is also observed in the work of Bahr and Gerberich on indentation of hydrogen-charged Ti-30Mo [26,27].…”

Section: Microhardness Testssupporting

confidence: 70%

Investigation of hydrogen-deformation interactions in β-21S titanium alloy using thermal desorption spectroscopy

Tal-Gutelmacher

Eliezer

Boellinghaus

2007

Journal of Alloys and Compounds

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Section: Microhardness Testssupporting

confidence: 70%

Investigation of hydrogen-deformation interactions in β-21S titanium alloy using thermal desorption spectroscopy

Tal-Gutelmacher

Eliezer

Boellinghaus

2007

Journal of Alloys and Compounds

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“…7, titanium containing 0.2-0.5 wt.% hydrogen, beta phase decomposed partially into thick alpha lath and a mainly ␣ lamellar structure with retained ␤ present at colony boundaries forms during cooling from 1123 to 592 K. Since the hydrogenation of titanium is an exothermic reaction, the cooling process promotes the hydrogenation of titanium [19]. However, the solid solubility of hydrogen in titanium alloys is certain, during cooling of the hydrogenated alloy to a temperature below 592 K, the ␦ phase precipitates from both supersaturated unstable ␣ and ␤ phases.…”

Section: Discussion On the Formation Mechanism Of The Hydridementioning

confidence: 99%

Microstructural evolution and formation mechanism of FCC titanium hydride in Ti–6Al–4V–xH alloys

Shan

Zong

et al. 2007

Journal of Alloys and Compounds

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“…α H phase transformation first occurred during furnace cooling from 750 to 298 C. Based on the hydrogenation of titanium alloys was an exothermic reaction, cooling process enhanced the hydrogen absorption capacity of titanium alloys. [34] When the temperature dropped to below 298 C, the δ hydrides precipitation from both supersaturated unstable α H and β H phases occurred during furnace cooling. The driving force of hydrides formation was the lattice distortion caused by the interstitial solution of hydrogen atoms in alpha phase.…”

Section: Hydride Precipitation Mechanismmentioning

confidence: 99%

The Hydride Precipitation Mechanisms in the Hydrogenated Weld Zone of Ti–0.3Mo–0.8Ni Alloy Argon‐Arc Welded Joints

et al. 2018

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A review of the microstructural evolution and phase transformation in the hydrogenated weld zone of Ti-0.3Mo-0.8Ni alloy argon-arc welded joints has been considered. The role of crystallographic, microstructural, and precipitation mechanisms on the defect-free properties of the hydrogenated weld zone has been analyzed, and hydride phase formations have been revealed by the influence of hydrogen on the microstructural characteristics of the weld zone. The results show face-centered cubic (FCC) δ and face-centered tetragonal (FCT) γ hydride phase formations are found in the hydrogenated 0.21 wt% H weld zone. Large lamellar, slender plate δ and long needle γ hydrides can only precipitate from the alpha lamellae, and not from the transformed beta phase due to the high hydrogen solubility found in the beta phase. Formation of the δ and γ hydrides are the result of α H phase separation reaction: α H ! α (H lean region) þ δ (H rich region) and α H ! γ (H rich region), respectively. The precipitation mechanisms and characteristics of the δ and γ hydrides formed in alpha phase are discussed in detail. Dislocation multiplication around the hydrides is promoted effectively by hydrogen addition, the fact that the quantity of dislocations around the δ hydride increased obviously compared to γ hydride indicated the α H ! δ phase transformation result in a greater volume expansion rate.

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The effects of hydrogen on deformation and cross slip in a BCC titanium alloy

Cited by 30 publications

References 9 publications

Investigation of hydrogen-deformation interactions in β-21S titanium alloy using thermal desorption spectroscopy

Investigation of hydrogen-deformation interactions in β-21S titanium alloy using thermal desorption spectroscopy

Microstructural evolution and formation mechanism of FCC titanium hydride in Ti–6Al–4V–xH alloys

The Hydride Precipitation Mechanisms in the Hydrogenated Weld Zone of Ti–0.3Mo–0.8Ni Alloy Argon‐Arc Welded Joints

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