Next Article in Journal
Numerical Analysis of a New Nonlinear Twist Extrusion Process
Next Article in Special Issue
The Effect of Initial Annealing Microstructures on the Forming Characteristics of Ti–4Al–2V Titanium Alloy
Previous Article in Journal
Fracture Toughness Calculation Method Amendment of the Dissimilar Steel Welded Joint Based on 3D XFEM
Previous Article in Special Issue
Hot Deformation Behavior and Microstructure Evolution of a TiBw/Near α-Ti Composite with Fine Matrix Microstructure
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle

Identification of Relationships between Heat Treatment and Fatigue Crack Growth of αβ Titanium Alloys

1
IRT Saint Exupery, B612, 3 rue Tarfaya, CS 34436, 31405 Toulouse CEDEX 4, France
2
Institut Pprime UPR3346 CNRS ENSMA Université de Poitiers, ISAE-ENSMA, 1 Avenue Clément Ader, 86961 Futuroscope Chasseneuil CEDEX, France
*
Authors to whom correspondence should be addressed.
Metals 2019, 9(5), 512; https://doi.org/10.3390/met9050512
Received: 8 March 2019 / Revised: 10 April 2019 / Accepted: 18 April 2019 / Published: 30 April 2019
(This article belongs to the Special Issue Titanium Alloys: Processing and Properties)
  |  
PDF [18324 KB, uploaded 1 May 2019]
  |  

Abstract

This study deals with the influence of microstructure on the fatigue crack growth resistance of αβ titanium alloys: Ti-6Al-4V ELI (Extra Low Interstitial) that may compete with the conventional Ti-6Al-4V alloy in the manufacture of high performance aircraft. Six different microstructures have been considered: the as-received bimodal microstructures and five distinct fully lamellar microstructures. The characteristic parameters of these microstructures were determined and crack growth tests were performed with crack closure measurements in order to evaluate the shielding effect induced by closure. A comparison of crack growth rates, fracture surfaces, and crack path was carried out for the different microstructures. The results outline a transition between two propagation regimes from a microstructure-sensitive to microstructure-insensitive propagation. View Full-Text
Keywords: crack growth; titanium alloy; microstructure; heat treatment; crack closure crack growth; titanium alloy; microstructure; heat treatment; crack closure
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Renon, V.; Henaff, G.; Larignon, C.; Perusin, S.; Villechaise, P. Identification of Relationships between Heat Treatment and Fatigue Crack Growth of αβ Titanium Alloys. Metals 2019, 9, 512.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top