Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire

Guilherme Soares; Mariana Carla Mendes  Rodrigues; Leandro de Arruda Santos

doi:10.5151/1516-392X-27599

Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire

Guilherme Soares
, Mariana Carla Mendes Rodrigues
, Leandro de Arruda Santos

Not published at VTT

Universidade Federal de Minas Gerais

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

Abstract

he effects of temperature and strain rate on the mechanical behavior of a superelastic NiTi wire were investigated by uniaxial tensile testing. A universal testing machine with an attached heating chamber was used for the tensile tests. Temperature influence was studied through straining of samples until rupture at a fixed strain rate and temperatures of 25, 50, 75, 100, 125, 150, 175 and 200 °C. Strain rate effects were investigated by straining samples until rupture at room temperature and strain rates of 10^-2, 5 × 10^-3 , 10^-3, 5 × 10^-4 and 10^-4 s^-1. The effects of temperature and strain rate on NiTi mechanical behavior were discussed in terms of critical stress to induce martensite and austenite yield strength, when applicable; upper plateau stress, transformation plateau length and ultimate plateau stress. It was found that increasing test temperature and strain rate shifted the stress-strain curve upwards, albeit temperature displayed a greater influence. Plateau length increased with temperature, but no significant changes were detected as a result of different strain rates.

Original language	English
Title of host publication	71th ABM Annual Congress
Publisher	Associação Brasileira de Metalurgia, Materiais e Mineração (ABM)
Pages	327-335
DOIs	https://doi.org/10.5151/1516-392X-27599
Publication status	Published - 28 Sept 2016
MoE publication type	B3 Non-refereed article in conference proceedings
Event	71th ABM Annual Congress - Rio de Janeiro, Brazil Duration: 26 Sept 2016 → 30 Sept 2016

Publication series

Series	Anais do Congresso Anual da ABM
Volume	71
ISSN	2594-5327

Conference

Conference	71th ABM Annual Congress
Country/Territory	Brazil
City	Rio de Janeiro
Period	26/09/16 → 30/09/16

Access to Document

10.5151/1516-392X-27599

Cite this

@inproceedings{7393fc8865814a3abe1566d078d8a110,

title = "Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire",

abstract = "he effects of temperature and strain rate on the mechanical behavior of a superelastic NiTi wire were investigated by uniaxial tensile testing. A universal testing machine with an attached heating chamber was used for the tensile tests. Temperature influence was studied through straining of samples until rupture at a fixed strain rate and temperatures of 25, 50, 75, 100, 125, 150, 175 and 200 °C. Strain rate effects were investigated by straining samples until rupture at room temperature and strain rates of 10-2, 5 × 10-3 , 10-3, 5 × 10-4 and 10-4 s-1. The effects of temperature and strain rate on NiTi mechanical behavior were discussed in terms of critical stress to induce martensite and austenite yield strength, when applicable; upper plateau stress, transformation plateau length and ultimate plateau stress. It was found that increasing test temperature and strain rate shifted the stress-strain curve upwards, albeit temperature displayed a greater influence. Plateau length increased with temperature, but no significant changes were detected as a result of different strain rates.",

author = "Guilherme Soares and Rodrigues, \{Mariana Carla Mendes\} and Santos, \{Leandro de Arruda\}",

year = "2016",

month = sep,

day = "28",

doi = "10.5151/1516-392X-27599",

language = "English",

series = "Anais do Congresso Anual da ABM",

publisher = "Associa{\c c}{\~a}o Brasileira de Metalurgia, Materiais e Minera{\c c}{\~a}o (ABM)",

pages = "327--335",

booktitle = "71th ABM Annual Congress",

address = "Brazil",

note = "71th ABM Annual Congress ; Conference date: 26-09-2016 Through 30-09-2016",

}

Soares, G, Rodrigues, MCM & Santos, LDA 2016, Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire. in 71th ABM Annual Congress. Associação Brasileira de Metalurgia, Materiais e Mineração (ABM), Anais do Congresso Anual da ABM, vol. 71, pp. 327-335, 71th ABM Annual Congress, Rio de Janeiro, Brazil, 26/09/16. https://doi.org/10.5151/1516-392X-27599

Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire. / Soares, Guilherme; Rodrigues, Mariana Carla Mendes; Santos, Leandro de Arruda.
71th ABM Annual Congress. Associação Brasileira de Metalurgia, Materiais e Mineração (ABM), 2016. p. 327-335 (Anais do Congresso Anual da ABM, Vol. 71).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific

TY - GEN

T1 - Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire

AU - Soares, Guilherme

AU - Rodrigues, Mariana Carla Mendes

AU - Santos, Leandro de Arruda

PY - 2016/9/28

Y1 - 2016/9/28

N2 - he effects of temperature and strain rate on the mechanical behavior of a superelastic NiTi wire were investigated by uniaxial tensile testing. A universal testing machine with an attached heating chamber was used for the tensile tests. Temperature influence was studied through straining of samples until rupture at a fixed strain rate and temperatures of 25, 50, 75, 100, 125, 150, 175 and 200 °C. Strain rate effects were investigated by straining samples until rupture at room temperature and strain rates of 10-2, 5 × 10-3 , 10-3, 5 × 10-4 and 10-4 s-1. The effects of temperature and strain rate on NiTi mechanical behavior were discussed in terms of critical stress to induce martensite and austenite yield strength, when applicable; upper plateau stress, transformation plateau length and ultimate plateau stress. It was found that increasing test temperature and strain rate shifted the stress-strain curve upwards, albeit temperature displayed a greater influence. Plateau length increased with temperature, but no significant changes were detected as a result of different strain rates.

AB - he effects of temperature and strain rate on the mechanical behavior of a superelastic NiTi wire were investigated by uniaxial tensile testing. A universal testing machine with an attached heating chamber was used for the tensile tests. Temperature influence was studied through straining of samples until rupture at a fixed strain rate and temperatures of 25, 50, 75, 100, 125, 150, 175 and 200 °C. Strain rate effects were investigated by straining samples until rupture at room temperature and strain rates of 10-2, 5 × 10-3 , 10-3, 5 × 10-4 and 10-4 s-1. The effects of temperature and strain rate on NiTi mechanical behavior were discussed in terms of critical stress to induce martensite and austenite yield strength, when applicable; upper plateau stress, transformation plateau length and ultimate plateau stress. It was found that increasing test temperature and strain rate shifted the stress-strain curve upwards, albeit temperature displayed a greater influence. Plateau length increased with temperature, but no significant changes were detected as a result of different strain rates.

U2 - 10.5151/1516-392X-27599

DO - 10.5151/1516-392X-27599

M3 - Conference article in proceedings

T3 - Anais do Congresso Anual da ABM

SP - 327

EP - 335

BT - 71th ABM Annual Congress

PB - Associação Brasileira de Metalurgia, Materiais e Mineração (ABM)

T2 - 71th ABM Annual Congress

Y2 - 26 September 2016 through 30 September 2016

ER -

Effects of Temperature and Strain Rate on the Mechanical Behavior of a Superelastic NiTi Wire

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