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13 - Electrical and Electronic Engineering, Metallurgy and Materials

Imperial College London : B - Metallurgy and Materials

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Article title

The effect of grain orientation on fracture morphology during high-cycle fatigue of Ti-6Al-4V

Type

D - Journal article

DOI

10.1016/j.actamat.2009.04.018

Title of journal

Acta Materialia

Article number

Volume number

Issue number

First page of article

3584

ISSN of journal

1359-6454

Year of publication

2009

URL

Number of additional authors

Additional information

Understanding Ti fatigue is critical to the competitiveness of Rolls-Royce (david.rugg@rolls-royce.com). Showed that crystallographic orientation affected the cracking mechanisms and hence why some product forms have superior life despite similar microstructure and strength. Used EBSD (integrated with TEM on dislocation mechanisms in a companion paper) applied to understanding fatigue crack initiation and facet vs striation mechanisms. Resulted in follow-up work understanding in-service failures valued at >£5m per failure: >£150k from Rolls-Royce and >£6m in grants EP/E044700/1, EP/H004882/1 and EP/K034332/1. Followed up by groups at USAF, Michigan, Georgia Tech, Oxford, Manchester, GE, AVIC and Westland.

Interdisciplinary

Cross-referral requested

Research group

None

Proposed double-weighted

Double-weighted statement

Reserve for a double-weighted output

Non-English

English abstract