Published January 31, 2014 | Version v1
Journal article Metadata-only

Microstructural investigation of thermally aged nickel-based superalloy 718Plus

Creators

  • 1. Christian Doppler Laboratory for Early Stages of Precipitation, Department of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz-Josef Straße 18, 8700 Leoben (Austria)
  • 2. Christian Doppler Laboratory for Early Stages of Precipitation, Vienna University of Technology, Favoritenstraße 9-11, A-1040 Vienna (Austria)
  • 3. Böhler Schmiedetechnik GmbH Co KG, Mariazellerstraße 25, 8600 Kapfenberg (Austria)

Description

The effects of thermal aging upon the nickel-based 718Plus superalloy are investigated and modelled. Yield strength and micro-hardness measurements are made after solution annealing and after aging at 788 °C for 4 h. In order to explain the differences in strength and hardness, a detailed investigation of the microstructure is performed using transmission electron microscopy. The size and phase fraction of the γ′ precipitates are measured and related to the measured hardness and yield strength using a theoretical model of precipitation strengthening based on the shearing of precipitates in terms of coherency strengthening and the formation of an antiphase boundary

Availability note (English)

Available from http://dx.doi.org/10.1016/j.msea.2013.11.037

Additional details

Identifiers

DOI
10.1016/j.msea.2013.11.037;
PII
S0921-5093(13)01265-3;

Publishing Information

Journal Title
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Journal Volume
594
Journal Page Range
p. 253-259
ISSN
0921-5093
CODEN
MSAPE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45109051
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AGING; ELDERLY PEOPLE; HARDNESS; MICROSTRUCTURE; NICKEL; PRECIPITATION; SHEAR; YIELD STRENGTH
Descriptors DEC
ADULTS; AGE GROUPS; AGED ADULTS; ANIMALS; ELEMENTS; HUMAN POPULATIONS; MAMMALS; MAN; MECHANICAL PROPERTIES; METALS; MINORITY GROUPS; POPULATIONS; PRIMATES; SEPARATION PROCESSES; TRANSITION ELEMENTS; VERTEBRATES

Optional Information

Copyright
Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.