Fatigue of beta titanium alloy at 20, 482 and 648 °C

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fatigue life of fibrous metal matrix composites is limited by the distribution of fibre strengths, the fibre-matrix interfacial strength, and the fatigue resistance of the matrix. The aim of this work is to provide fatigue results for a beta titanium alloy over a range of temperatures and stresses that can be used as input for predicting fatigue life of a titanium matrix composite. Stress controlled tests having fatigue ratios between - 1 and -0.2 were conducted on a limited number of samples machined from unreinforced laminated Ti-15Mo-3Al-2.TNb-0.2Si (TLMETAL®21S) sheets to represent as closely as possible the in situ matrix material. Stress control was used to enable quantification of strain ratcheting for tensile mean stresses and a fast loading rate was used to minimize time-dependent (creep) deformation. Stress amplitude-life data at 20, 482 and 648 °C for fully reversed loading are well fit by a power law. Normalizing the stress amplitude with respect to the power law coefficient appears to account for the temperature dependence of the S-N curves. As the tests had large strains and lives were in the low-cycle fatigue range, strain range at the half-life was also correlated to life. For tensile mean stress cycling at 482 and 648 °C, the rate of strain ratcheting per cycle increased to failure; shakedown was not observed.

Original languageEnglish (US)
Pages (from-to)943-955
Number of pages13
JournalFatigue and Fracture of Engineering Materials and Structures
Volume27
Issue number10
DOIs
StatePublished - Oct 1 2004

Fingerprint

Titanium alloys
Fatigue of materials
Fibers
Composite materials
beta titanium
Titanium
Creep
Metals
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{b7bacb3abc274a87b0afdc5adc40ece6,
title = "Fatigue of beta titanium alloy at 20, 482 and 648 °C",
abstract = "Fatigue life of fibrous metal matrix composites is limited by the distribution of fibre strengths, the fibre-matrix interfacial strength, and the fatigue resistance of the matrix. The aim of this work is to provide fatigue results for a beta titanium alloy over a range of temperatures and stresses that can be used as input for predicting fatigue life of a titanium matrix composite. Stress controlled tests having fatigue ratios between - 1 and -0.2 were conducted on a limited number of samples machined from unreinforced laminated Ti-15Mo-3Al-2.TNb-0.2Si (TLMETAL{\circledR}21S) sheets to represent as closely as possible the in situ matrix material. Stress control was used to enable quantification of strain ratcheting for tensile mean stresses and a fast loading rate was used to minimize time-dependent (creep) deformation. Stress amplitude-life data at 20, 482 and 648 °C for fully reversed loading are well fit by a power law. Normalizing the stress amplitude with respect to the power law coefficient appears to account for the temperature dependence of the S-N curves. As the tests had large strains and lives were in the low-cycle fatigue range, strain range at the half-life was also correlated to life. For tensile mean stress cycling at 482 and 648 °C, the rate of strain ratcheting per cycle increased to failure; shakedown was not observed.",
author = "Solimine, {P. A.} and {Lissenden, III}, {Clifford Jesse}",
year = "2004",
month = "10",
day = "1",
doi = "10.1111/j.1460-2695.2004.00805.x",
language = "English (US)",
volume = "27",
pages = "943--955",
journal = "Fatigue and Fracture of Engineering Materials and Structures",
issn = "8756-758X",
publisher = "Wiley-Blackwell",
number = "10",

}

Fatigue of beta titanium alloy at 20, 482 and 648 °C. / Solimine, P. A.; Lissenden, III, Clifford Jesse.

In: Fatigue and Fracture of Engineering Materials and Structures, Vol. 27, No. 10, 01.10.2004, p. 943-955.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fatigue of beta titanium alloy at 20, 482 and 648 °C

AU - Solimine, P. A.

AU - Lissenden, III, Clifford Jesse

PY - 2004/10/1

Y1 - 2004/10/1

N2 - Fatigue life of fibrous metal matrix composites is limited by the distribution of fibre strengths, the fibre-matrix interfacial strength, and the fatigue resistance of the matrix. The aim of this work is to provide fatigue results for a beta titanium alloy over a range of temperatures and stresses that can be used as input for predicting fatigue life of a titanium matrix composite. Stress controlled tests having fatigue ratios between - 1 and -0.2 were conducted on a limited number of samples machined from unreinforced laminated Ti-15Mo-3Al-2.TNb-0.2Si (TLMETAL®21S) sheets to represent as closely as possible the in situ matrix material. Stress control was used to enable quantification of strain ratcheting for tensile mean stresses and a fast loading rate was used to minimize time-dependent (creep) deformation. Stress amplitude-life data at 20, 482 and 648 °C for fully reversed loading are well fit by a power law. Normalizing the stress amplitude with respect to the power law coefficient appears to account for the temperature dependence of the S-N curves. As the tests had large strains and lives were in the low-cycle fatigue range, strain range at the half-life was also correlated to life. For tensile mean stress cycling at 482 and 648 °C, the rate of strain ratcheting per cycle increased to failure; shakedown was not observed.

AB - Fatigue life of fibrous metal matrix composites is limited by the distribution of fibre strengths, the fibre-matrix interfacial strength, and the fatigue resistance of the matrix. The aim of this work is to provide fatigue results for a beta titanium alloy over a range of temperatures and stresses that can be used as input for predicting fatigue life of a titanium matrix composite. Stress controlled tests having fatigue ratios between - 1 and -0.2 were conducted on a limited number of samples machined from unreinforced laminated Ti-15Mo-3Al-2.TNb-0.2Si (TLMETAL®21S) sheets to represent as closely as possible the in situ matrix material. Stress control was used to enable quantification of strain ratcheting for tensile mean stresses and a fast loading rate was used to minimize time-dependent (creep) deformation. Stress amplitude-life data at 20, 482 and 648 °C for fully reversed loading are well fit by a power law. Normalizing the stress amplitude with respect to the power law coefficient appears to account for the temperature dependence of the S-N curves. As the tests had large strains and lives were in the low-cycle fatigue range, strain range at the half-life was also correlated to life. For tensile mean stress cycling at 482 and 648 °C, the rate of strain ratcheting per cycle increased to failure; shakedown was not observed.

UR - http://www.scopus.com/inward/record.url?scp=4644257707&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4644257707&partnerID=8YFLogxK

U2 - 10.1111/j.1460-2695.2004.00805.x

DO - 10.1111/j.1460-2695.2004.00805.x

M3 - Article

AN - SCOPUS:4644257707

VL - 27

SP - 943

EP - 955

JO - Fatigue and Fracture of Engineering Materials and Structures

JF - Fatigue and Fracture of Engineering Materials and Structures

SN - 8756-758X

IS - 10

ER -