Microstructural Features and Mechanical Properties of the Ti-6Al-4V ELI Alloy Processed by Severe Plastic Deformation

Semenova, Irina P.; Saitova, Lilia R.; Рааб, Г. И.; Korshunov, A. I.; Zhu, Yuntian; Lowe, Terry C.; Valiev, Ruslan Z.

doi:10.4028/0-87849-985-7.757

Cited by 3 publications

(6 citation statements)

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“…According to Figure 2(ab), it seems that grain refinement is mostly due to refinement of beta phase. This has also been observed in other researchers' studies [13,20,21]. Indeed, the beta phase has better grain refinement ability in the ECAP process.…”

Section: Resultssupporting

confidence: 84%

“…May [20] attributed this to the low volume percentage of beta phase (10%) in the structure, while this phenomenon is also observed in the present study, which contains higher volume percentage of beta phase (30%).…”

Section: Resultssupporting

confidence: 70%

“…May [20] has reported the ECAP process of Ti-6Al-4V alloy at 650°C under non-isothermal conditions after 12 passes. In this study, the mould temperature was 400°C, and a ram speed of 6 mm/s was used.…”

Section: Resultsmentioning

confidence: 99%

“…In this research, the grain size of the sample reached 400 nm after 2 passes, and the grain size of 200-300 nm was reported after 4 passes of the ECAP process. Thus, the conditions in which the mean grain size was reported below 1 μm was the high-speed non-isothermal ECAP process [20] and the isothermal ECAP process at the temperature of 600°C and channel angle of 90° [12]. In this research, higher number of passes (8-12 passes), higher speed (6 mm/s) and non-isothermal conditions have been used compared to…”

Section: Resultsmentioning

confidence: 99%

“…The die temperature, and the ram speed were 350°C and 10 mm/Sec, respectively. May defines the extrusion ratio as [20]: The extrusion ratio in this experiment was 10. After hot extrusion, the samples are cooled down to room temperature.…”

Section: Hot Extrusionmentioning

confidence: 98%

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Improved properties of Ti-6Al-4V by combining isothermal equal-channel angular processing and hot-extrusion

Hamid

Ketabchi

2019

Materials Science and Technology

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The aim of this work was to study effects of hot extrusion on the microstructure of Ti-6Al-4V (wt-%) alloy processed by ECAP. Firstly, an isothermally Ti–6Al–4V alloy processed by Equal channel angular pressing(ECAP) was preheated at 950°C for 6 min and then hot extruded at 900°C. The hot extrusion minimised the grain size and maximised the mechanical strength. Therefore, it was demonstrated that hot extrusion of Ti-6Al-4V alloys that processed by ECAP could be performed without compromising any mechanical properties. Therefore, it is possible to use the ability to apply a reduced cross-section in hot extrusion for an Ti-6Al-4V processed by ECAP without concern about the reduction of properties.

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Section: Resultssupporting

confidence: 84%

Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Hot Extrusionmentioning

confidence: 98%

See 3 more Smart Citations

Improved properties of Ti-6Al-4V by combining isothermal equal-channel angular processing and hot-extrusion

Hamid

Ketabchi

2019

Materials Science and Technology

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Effects of tool materials and cutting conditions in turning of Ti-6Al-4V alloy: statistical analysis, modeling and optimization using CoCoSo, MABAC, ARAS and CODAS methods

ABBED,

Kribes,

Yallese

et al. 2023

Int J Adv Manuf Technol

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Advances in Superplasticity of Ultrafine-Grained Alloys: Recent Research and Development

Valiev

Semenova

2016

MSF

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Recent studies have revealed that ultrafine-grained (UFG) metals and alloys produced by severe plastic deformation (SPD) can demonstrate extraordinary superplasticity at low temperatures and/or high strain rates. This work presents new results on superplasticity in several UFG Al and Ti alloys focusing on microstructural evolution and strain hardening, as well as the challenges of their application. Grain refinement in these alloys was accomplished using severe plastic deformation techniques, including new modifications of equal channel angular pressing (ECAP). Unusual behavior of UFG alloys originates both from the formation of ultrafine grain by SPD processing as well as the state of grain boundaries in these materials. It is established that superplastic deformation allowed not only to attain their efficient forming, but also to improve the ultrafine-grained structure and to obtain enhanced mechanical properties in the articles produced. The results demonstrate the possibilities of new applications of superplastic forming using bulk nanostructured materials.

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Microstructural Features and Mechanical Properties of the Ti-6Al-4V ELI Alloy Processed by Severe Plastic Deformation

Cited by 3 publications

References 0 publications

Improved properties of Ti-6Al-4V by combining isothermal equal-channel angular processing and hot-extrusion

Improved properties of Ti-6Al-4V by combining isothermal equal-channel angular processing and hot-extrusion

Effects of tool materials and cutting conditions in turning of Ti-6Al-4V alloy: statistical analysis, modeling and optimization using CoCoSo, MABAC, ARAS and CODAS methods

Advances in Superplasticity of Ultrafine-Grained Alloys: Recent Research and Development

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