Modelling of creep and fracture properties of nickel based alloys

Faulkner, Roy G.; Vujic, S.; Di Martino, Fabio; Hogg, Simon

740H and 740 Modelling paper_repositry.pdf (708.38 kB)

Modelling of creep and fracture properties of nickel based alloys

journal contribution

posted on 2017-09-15, 10:35 authored by Roy G. Faulkner, S. Vujic, Fabio Di Martino, Simon HoggSimon Hogg

This paper reviews the differences between two nickel based alloys, Alloy 740 and Alloy 740H. Microstructural evolution models are used to forecast the changes in volume fraction and interparticle spacing of both grain boundary and intra-granular precipitates in the alloys. These data are then employed in continuum damage mechanics models to forecast creep curves, and in fracture mechanics models to forecast Charpy impact energies/energy. The results reveal the key microstructural features that control secondary and tertiary creep rate as well as the time dependence of Charpy impact energy after high temperature exposure.

Funding

The investigation is part of the collaborative project ENER/FP7EN/249809/MACPLUS, funded by the EU within the FP7 framework.

History

School

Aeronautical, Automotive, Chemical and Materials Engineering

Department

Materials

Published in

Materials Science and Technology

Pages

1 - 8

Citation

FAULKNER, R.G. ... et al, 2016. Modelling of creep and fracture properties of nickel based alloys. Materials Science and Technology, 33 (1), pp. 121-128.

Publisher

Taylor & Francis © Institute of Materials, Minerals and Mining

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

2016-03-02

Publication date

2016

Notes

This is an Accepted Manuscript of an article published by Taylor & Francis in Materials Science and Technology on 4 May 2016, available online: http://www.tandfonline.com/10.1080/02670836.2016.1164959.