| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1575464 | Materials Science and Engineering: A | 2014 | 7 Pages |
Abstract
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 γⲠprecipitates 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Lawrence Whitmore, Mohammad Reza Ahmadi, Martin Stockinger, Erwin Povoden-Karadeniz, Ernst Kozeschnik, Harald Leitner,