Microstructure evolution in pure titanium during warm deformation by combined rolling processes

Lopatin, N. V.

doi:10.1016/j.msea.2012.07.052

Cited by 10 publications

(3 citation statements)

References 47 publications

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“…The rolling activates additional systems of slip and twining for commercially pure titanium [13]. Crystalline defects could exist in microstructure after cold deformation.…”

Section: Microstructural Evolvement and Cold Forming Propertiesmentioning

confidence: 99%

Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet

Zhang

Cai

Wang

et al. 2019

MSF

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Different cold rolling reductions were adopted for commercially pure titanium sheet. Cold forming properties were investigated by a microstructural analysis, Vickers microhardness and erichsen value measurements. The results have shown that Cold rolling resulted in refined alpha grains. Alpha grain size was refined further by greater cold reduction. Alpha grain sizes of the specimens of processing 1, 2 and 3 reached 30.90 μm, 26.48 μm and 20.58 μm, respectively. Cold forming properties were affected by different alpha grain sizes. The hardness and erichsen value reached the lowest and the highest values for the specimens in processing 1. The hardness increased and erichsen value decreased due to the finer alpha grain size for the specimen which was cold-rolled at a reduction of 50% in processing 2. Erichsen test results of the specimens of processing 3 had the lowest values due to the deformation of a reduction of 70%. Cold forming properties of the specimens of processing 3 were deteriorated, this is because deformation leads to the high dislocation density and the stored energy increases with accumulated strain after deformation.

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“…The rolling activates additional systems of slip and twining for commercially pure titanium [13]. Crystalline defects could exist in microstructure after cold deformation.…”

Section: Microstructural Evolvement and Cold Forming Propertiesmentioning

confidence: 99%

Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet

Zhang

Cai

Wang

et al. 2019

MSF

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“…Along with DEFORM, Forge, QForm and other commercial software, LS-DYNA is one of the most commonly used in metal-forming research. 19 LS-DYNA was used by Lopatin 20 to study the evolution of the microstructure of pure titanium under warm forming during screw rolling and by Lopatin et al 21 to study the formation of the globular structure during screw rolling of parts made of titanium alloy. Reggio et al 22 described how plug shape influences forming during Mannesmann piercing.…”

Section: Introductionmentioning

confidence: 99%

Mannesmann piercing of ingots by plugs of different shapes

Skripalenko

Баженов

Романцев

et al. 2016

Materials Science and Technology

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The purpose of the research reported here was to establish how plug shape influences the size and porosity of hollow shells produced by Mannesmann piercing of an ingot. Ingots were cast from 6060 aluminium alloy and then pierced with a solid plug, a plug with a cavity or a hollow plug. Computer simulation of these processes was carried out using ProCast and QForm software and showed that a hollow plug should produce hollow shells with minimal porosity. However, the results of the experimental piercing revealed that the hollow plug in fact produced hollow shells with higher porosity than that of shells produced using either of the other two plugs. This appears to be consequence of the hollow plug losing stability.

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“…slip and twin systems of commercially pure titanium[21].Deformation Mode Plane Direction Critical Resolved Shear Stress (CRSS, MPa) Basal slip, <a> {0001} <112 _ 0> 190…”

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confidence: 99%

Effect of the Strength of Initial Aluminium on the Bonding Properties and Deformation Coordination of Ti/Al Composite Sheets by the Cold Roll Bonding Process

Liu

Wu²,

Liu

et al. 2022

Crystals

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Ti/Al composite sheets were prepared using the cold rolling process, and different initial aluminium strengths were considered. The results showed that the peel strength of the Ti/Al composite sheet increased with the increasing initial strength of aluminium under the same reduction. A higher strength of the initial aluminium corresponds to better deformation coordination between titanium and aluminium, where the strain hardening of titanium and aluminium plays an important role. The change degree of the components of twins on the titanium side for the Ti/Al composite sheet with a low aluminium strength is stronger than that for the Ti/Al composite sheet with a high aluminium strength. The strong change in the components of twins may result in the low uniformity of the microstructure on the titanium side. The analysis of the peeling surface shows aluminium residue on the titanium side, while there was almost no titanium residue on the aluminium side. At the same reduction, a higher strength of aluminium corresponds to less aluminium residue on the titanium side. The bonding properties of Ti/Al cold-rolled composite sheets were determined by four strong bonding areas. The strength of the initial aluminium was the main factor, and the residual amount of aluminium on the titanium side of the peeling surfaces was a secondary factor.

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Microstructure evolution in pure titanium during warm deformation by combined rolling processes

Cited by 10 publications

References 47 publications

Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet

Effects of Rolling Reduction on Cold Forming Properties of Commercially Pure Titanium Sheet

Mannesmann piercing of ingots by plugs of different shapes

Effect of the Strength of Initial Aluminium on the Bonding Properties and Deformation Coordination of Ti/Al Composite Sheets by the Cold Roll Bonding Process

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