Effect of strain hardening on precipitation kinetics in ATI 718Plus

Bilal Hassan, Yann Jansen, Sebastien Nouveau, Jonathan Corney

Research output: Contribution to journalArticle

Abstract

ATI 718Plus components are manufactured by forging a wrought billet in stages to obtain the desired geometry and microstructure. Parts are then heat treated to optimized proportions of γ’ and η phases. η phase is a plate-like phase that precipitates on the grain boundaries of ATI 718Plus, similar to δ phase in Inconel 718. However, the complete kinetic behaviour of η phase precipitation during forging and heat treatment is still not fully understood. This paper investigates the effects of strain hardening on η phase precipitation kinetics in ATI 718Plus. This is achieved through the use of isothermal hot compression tests and heat treatment. Strain hardening was found to affect the η precipitation kinetics considerably. The results reported are a contribution to a fuller understanding of this important process.

Fingerprint

strain hardening
Strain hardening
forging
Forging
Kinetics
kinetics
heat treatment
Heat treatment
Inconel (trademark)
billets
compression tests
Hot pressing
Precipitates
precipitates
proportion
Grain boundaries
grain boundaries
heat
microstructure
Microstructure

Keywords

  • ATI 718Plus
  • eta phase
  • precipitation kinetics
  • strain hardening
  • η phase

Cite this

@article{e9d6502008e64b3792a5f38c94170f10,
title = "Effect of strain hardening on precipitation kinetics in ATI 718Plus",
abstract = "ATI 718Plus components are manufactured by forging a wrought billet in stages to obtain the desired geometry and microstructure. Parts are then heat treated to optimized proportions of γ’ and η phases. η phase is a plate-like phase that precipitates on the grain boundaries of ATI 718Plus, similar to δ phase in Inconel 718. However, the complete kinetic behaviour of η phase precipitation during forging and heat treatment is still not fully understood. This paper investigates the effects of strain hardening on η phase precipitation kinetics in ATI 718Plus. This is achieved through the use of isothermal hot compression tests and heat treatment. Strain hardening was found to affect the η precipitation kinetics considerably. The results reported are a contribution to a fuller understanding of this important process.",
keywords = "ATI 718Plus, eta phase, precipitation kinetics, strain hardening, η phase",
author = "Bilal Hassan and Yann Jansen and Sebastien Nouveau and Jonathan Corney",
year = "2017",
month = "9",
day = "25",
doi = "10.4028/www.scientific.net/MSF.907.167",
language = "English",
volume = "907",
pages = "167--172",
journal = "Materials Science Forum",
issn = "0255-5476",

}

Effect of strain hardening on precipitation kinetics in ATI 718Plus. / Hassan, Bilal; Jansen, Yann; Nouveau, Sebastien; Corney, Jonathan.

In: Materials Science Forum, Vol. 907, 25.09.2017, p. 167-172.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of strain hardening on precipitation kinetics in ATI 718Plus

AU - Hassan, Bilal

AU - Jansen, Yann

AU - Nouveau, Sebastien

AU - Corney, Jonathan

PY - 2017/9/25

Y1 - 2017/9/25

N2 - ATI 718Plus components are manufactured by forging a wrought billet in stages to obtain the desired geometry and microstructure. Parts are then heat treated to optimized proportions of γ’ and η phases. η phase is a plate-like phase that precipitates on the grain boundaries of ATI 718Plus, similar to δ phase in Inconel 718. However, the complete kinetic behaviour of η phase precipitation during forging and heat treatment is still not fully understood. This paper investigates the effects of strain hardening on η phase precipitation kinetics in ATI 718Plus. This is achieved through the use of isothermal hot compression tests and heat treatment. Strain hardening was found to affect the η precipitation kinetics considerably. The results reported are a contribution to a fuller understanding of this important process.

AB - ATI 718Plus components are manufactured by forging a wrought billet in stages to obtain the desired geometry and microstructure. Parts are then heat treated to optimized proportions of γ’ and η phases. η phase is a plate-like phase that precipitates on the grain boundaries of ATI 718Plus, similar to δ phase in Inconel 718. However, the complete kinetic behaviour of η phase precipitation during forging and heat treatment is still not fully understood. This paper investigates the effects of strain hardening on η phase precipitation kinetics in ATI 718Plus. This is achieved through the use of isothermal hot compression tests and heat treatment. Strain hardening was found to affect the η precipitation kinetics considerably. The results reported are a contribution to a fuller understanding of this important process.

KW - ATI 718Plus

KW - eta phase

KW - precipitation kinetics

KW - strain hardening

KW - η phase

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