Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

On the evolution of primary gamma prime precipitates during high temperature and high strain rate deformation and subsequent heat treatment in the Ni-based superalloy, RR1000

Tools
- Tools
+ Tools

D'Souza, N., Li, W., Argyrakis, C., West, Geoffrey D. and Slater, Carl (2019) On the evolution of primary gamma prime precipitates during high temperature and high strain rate deformation and subsequent heat treatment in the Ni-based superalloy, RR1000. Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science, 50 . pp. 4205-4222. doi:10.1007/s11661-019-05330-w ISSN 1073-5623.

[img]
Preview
PDF
WRAP-on-evolution-primary-gamma-high-strain-heat-treatment-Slater-2019.pdf - Published Version - Requires a PDF viewer.
Available under License Creative Commons Attribution 4.0.

Download (3743Kb) | Preview
[img] PDF
WRAP-on-evolution-primary-gamma-high-strain-heat-treatment-Slater-2019.pdf - Accepted Version
Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer.

Download (1573Kb)
Official URL: https://doi.org/10.1007/s11661-019-05330-w

Request Changes to record.

Abstract

The microstructural evolution following compression and subsequent sub-solvus and super-solvus heat treatment was studied in the Ni-based superalloy, RR1000, typically used for rotor disc applications in aero-engines. For a low strain rate of 0.1 s−1 at close to solvus temperature, 1413 K (1140 °C), the flow stress is constant. For larger strain rates of 1 and 10 s−1 at sub-solvus temperature, 1373 K (1100 °C) dynamic re-crystallization (DRX) of γ grains occurs during forging with accompanying stress decay. Incoherent primary γ′ precipitates form mainly via meta-dynamic re-crystallization (MDRX) at 1 s−1 and are as intergranular. For 10 s−1, the coherently nucleated or existing precipitates present in the initial as-HIP condition become incoherent when the grain boundary sweeps past them during DRX and subsequent grain growth. The incoherent primary γ′ precipitates are mainly intragranular. During sub-solvus heat treatment at 1373 K (1100 °C), dissolution of the incoherent precipitates occurs through coarsening of the coherent intragranular population with only sporadic incoherent precipitates remaining. The prior induced deformation (strain and strain rate) influences the evolution of precipitate morphologies during cooling following heating to super-solvus temperature. Using numerical simulations, a quantitative calculation of the different precipitate morphologies was carried out during slow cooling from super-solvus temperature, 1443 K to 1373 K (1170 °C to 1100 °C).

Item Type: Journal Article
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Heat resistant alloys, Alloys, Physical metallurgy, Microstructure
Journal or Publication Title: Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
Publisher: Springer New York LLC
ISSN: 1073-5623
Official Date: 15 September 2019
Dates:
DateEvent
15 September 2019Published
26 June 2019Available
12 June 2019Accepted
Volume: 50
Page Range: pp. 4205-4222
DOI: 10.1007/s11661-019-05330-w
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 15 July 2019
Date of first compliant Open Access: 17 July 2019

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us