A large strain rate effect in thin free-standing Al films

E. Ben-David; T. Tepper-Faran; Daniel Rittel; Doron Shilo

doi:https://doi.org/10.1016/j.scriptamat.2014.06.024

A large strain rate effect in thin free-standing Al films

E. Ben-David, T. Tepper-Faran, Daniel Rittel, Doron Shilo

Mechanical Engineering

Technion - Israel Institute of Technology

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

Abstract

We present tensile tests of thin aluminum films under quasi-static, medium and high strain rates. A large strain rate effect is revealed, as the ultimate tensile strength increases by more than 400% compared to quasi-static tests. An analysis of the kinetic relation for plastic flow shows that all commonly used kinetic laws cannot explain our results. Instead, we suggest an newly elaborated kinetic law that is in good agreement with the results over the entire range of strain rates.

Original language	English
Pages (from-to)	6-9
Number of pages	4
Journal	Scripta Materialia
Volume	90
Issue number	1
DOIs	https://doi.org/10.1016/j.scriptamat.2014.06.024
State	Published - 2014

Keywords

High strain rate
MEMS
Mechanical properties
Tension tests
Thin films

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
General Materials Science

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https://doi.org/10.1016/j.scriptamat.2014.06.024

Cite this

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title = "A large strain rate effect in thin free-standing Al films",

abstract = "We present tensile tests of thin aluminum films under quasi-static, medium and high strain rates. A large strain rate effect is revealed, as the ultimate tensile strength increases by more than 400% compared to quasi-static tests. An analysis of the kinetic relation for plastic flow shows that all commonly used kinetic laws cannot explain our results. Instead, we suggest an newly elaborated kinetic law that is in good agreement with the results over the entire range of strain rates.",

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AU - Ben-David, E.

AU - Tepper-Faran, T.

AU - Rittel, Daniel

AU - Shilo, Doron

PY - 2014

Y1 - 2014

N2 - We present tensile tests of thin aluminum films under quasi-static, medium and high strain rates. A large strain rate effect is revealed, as the ultimate tensile strength increases by more than 400% compared to quasi-static tests. An analysis of the kinetic relation for plastic flow shows that all commonly used kinetic laws cannot explain our results. Instead, we suggest an newly elaborated kinetic law that is in good agreement with the results over the entire range of strain rates.

AB - We present tensile tests of thin aluminum films under quasi-static, medium and high strain rates. A large strain rate effect is revealed, as the ultimate tensile strength increases by more than 400% compared to quasi-static tests. An analysis of the kinetic relation for plastic flow shows that all commonly used kinetic laws cannot explain our results. Instead, we suggest an newly elaborated kinetic law that is in good agreement with the results over the entire range of strain rates.

KW - High strain rate

KW - MEMS

KW - Mechanical properties

KW - Tension tests

KW - Thin films

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DO - https://doi.org/10.1016/j.scriptamat.2014.06.024

M3 - مقالة

SN - 1359-6462

VL - 90

SP - 6

EP - 9

JO - Scripta Materialia

JF - Scripta Materialia

IS - 1

ER -

A large strain rate effect in thin free-standing Al films

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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