Materials Science » Metals and Nonmetals


Edited by Mahmood Aliofkhazraei, ISBN 978-953-51-2212-8, 344 pages, Publisher: InTech, Chapters published November 25, 2015 under CC BY 3.0 license
DOI: 10.5772/59358
Edited Volume

Superalloy, or high-performance alloy, is an alloy that exhibits several key characteristics: excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation. The crystal structure is typically face-centered cubic austenitic. Superalloy development has relied heavily on both chemical and process innovations. Superalloys develop high temperature strength through solid solution strengthening. An important strengthening mechanism is precipitation strengthening which forms secondary phase precipitates such as gamma prime and carbides. Oxidation or corrosion resistance is provided by elements such as aluminium and chromium. This book collects new developments about superalloys.