Thermo-mechanical characterization and dynamic failure of near α and near β titanium alloys

L. H. Zhang; D. Rittel; S. Osovski

doi:10.1016/j.msea.2018.05.007

Thermo-mechanical characterization and dynamic failure of near α and near β titanium alloys

L. H. Zhang, D. Rittel, S. Osovski

Mechanical Engineering

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

This paper investigates the thermo-mechanical response and failure behaviour of near β Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) and near α Ti3Al2.5 V alloy under high strain rate loading. A series of dynamic compression and shear compression tests have been performed, using a high-speed infrared detector synchronized with a Kolsky bar (split Hopkinson pressure bar). The results show that Ti-55511 presents a higher flow stress with little strain hardening, as opposed to Ti3Al2.5 V. The measured temperature rise preceding the onset of load drop is modest and insufficient to trigger thermal instabilities. Near α Ti3Al2.5 V is characterized by a higher Taylor–Quinney coefficient–β_int, which is close to ~0.6 compared to ~0.35 for near β Ti-55511. Microstructural examination reveals that both alloys fail by dynamic shear localization.

Original language	English
Pages (from-to)	94-101
Number of pages	8
Journal	Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume	729
DOIs	https://doi.org/10.1016/j.msea.2018.05.007
State	Published - 27 Jun 2018

Keywords

Dynamic shear failure
Infrared
Kolsky bar
Taylor-Quinney coefficient
Ti-55511
Ti3Al2.5 V

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
General Materials Science

Access to Document

10.1016/j.msea.2018.05.007

Cite this

@article{7d6a2f28218c4efba1797daa0bfc9185,

title = "Thermo-mechanical characterization and dynamic failure of near α and near β titanium alloys",

abstract = "This paper investigates the thermo-mechanical response and failure behaviour of near β Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) and near α Ti3Al2.5 V alloy under high strain rate loading. A series of dynamic compression and shear compression tests have been performed, using a high-speed infrared detector synchronized with a Kolsky bar (split Hopkinson pressure bar). The results show that Ti-55511 presents a higher flow stress with little strain hardening, as opposed to Ti3Al2.5 V. The measured temperature rise preceding the onset of load drop is modest and insufficient to trigger thermal instabilities. Near α Ti3Al2.5 V is characterized by a higher Taylor–Quinney coefficient–βint, which is close to \textasciitilde{}0.6 compared to \textasciitilde{}0.35 for near β Ti-55511. Microstructural examination reveals that both alloys fail by dynamic shear localization.",

keywords = "Dynamic shear failure, Infrared, Kolsky bar, Taylor-Quinney coefficient, Ti-55511, Ti3Al2.5 V",

author = "Zhang, \{L. H.\} and D. Rittel and S. Osovski",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = jun,

day = "27",

doi = "10.1016/j.msea.2018.05.007",

language = "الإنجليزيّة",

volume = "729",

pages = "94--101",

journal = "Materials Science \& Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Thermo-mechanical characterization and dynamic failure of near α and near β titanium alloys

AU - Zhang, L. H.

AU - Rittel, D.

AU - Osovski, S.

PY - 2018/6/27

Y1 - 2018/6/27

N2 - This paper investigates the thermo-mechanical response and failure behaviour of near β Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) and near α Ti3Al2.5 V alloy under high strain rate loading. A series of dynamic compression and shear compression tests have been performed, using a high-speed infrared detector synchronized with a Kolsky bar (split Hopkinson pressure bar). The results show that Ti-55511 presents a higher flow stress with little strain hardening, as opposed to Ti3Al2.5 V. The measured temperature rise preceding the onset of load drop is modest and insufficient to trigger thermal instabilities. Near α Ti3Al2.5 V is characterized by a higher Taylor–Quinney coefficient–βint, which is close to ~0.6 compared to ~0.35 for near β Ti-55511. Microstructural examination reveals that both alloys fail by dynamic shear localization.

AB - This paper investigates the thermo-mechanical response and failure behaviour of near β Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) and near α Ti3Al2.5 V alloy under high strain rate loading. A series of dynamic compression and shear compression tests have been performed, using a high-speed infrared detector synchronized with a Kolsky bar (split Hopkinson pressure bar). The results show that Ti-55511 presents a higher flow stress with little strain hardening, as opposed to Ti3Al2.5 V. The measured temperature rise preceding the onset of load drop is modest and insufficient to trigger thermal instabilities. Near α Ti3Al2.5 V is characterized by a higher Taylor–Quinney coefficient–βint, which is close to ~0.6 compared to ~0.35 for near β Ti-55511. Microstructural examination reveals that both alloys fail by dynamic shear localization.

KW - Dynamic shear failure

KW - Infrared

KW - Kolsky bar

KW - Taylor-Quinney coefficient

KW - Ti-55511

KW - Ti3Al2.5 V

UR - http://www.scopus.com/inward/record.url?scp=85047274756&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2018.05.007

DO - 10.1016/j.msea.2018.05.007

M3 - مقالة

SN - 0921-5093

VL - 729

SP - 94

EP - 101

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Thermo-mechanical characterization and dynamic failure of near α and near β titanium alloys

Abstract

Keywords

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this