Variability in Fatigue Life of Near-α Titanium Alloy IMI 834

Most aero-engine components and structures are subjected to life critical fatigue loads during service. Near- α titanium alloy IMI 834 is one candidate aero-engine material that is used as high-pressure compressor discs due to its superior fatigue strength and creep resistance. The effect of heat tr...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2021-04, Vol.74 (4), p.979-989
Main Authors: Bhandari, Litton, Kumar, Jalaj, Balasundar, I., Arora, Amit
Format: Article
Language:English
Subjects:
Aerospace engines
Chemistry and Materials Science
Cooling rate
Corrosion and Coatings
Creep strength
Engine components
Fatigue life
Fatigue strength
Finite element method
Heat treating
Heat treatment
High cycle fatigue
Materials Science
Metal fatigue
Metallic Materials
Original Article
Titanium alloys
Titanium base alloys
Tribology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Most aero-engine components and structures are subjected to life critical fatigue loads during service. Near- α titanium alloy IMI 834 is one candidate aero-engine material that is used as high-pressure compressor discs due to its superior fatigue strength and creep resistance. The effect of heat treatment on the microstructure and high-cycle fatigue behaviour of the material has been studied and reported here. The alloy was solution-heat-treated at 1060 °C and subsequently quenched in different media. A strong effect of quench media (cooling rate) on high-cycle fatigue life has been observed. Fractographic investigations were performed to correlate the fracture micro-mechanism with heat treatment. Further, a generalized stress-life model has been deduced from the fatigue data and integrated with finite element analysis to develop a fatigue model for the alloy.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-021-02210-z