SYMPOSIA PAPER Published: 01 January 1958

An Electron Metallographic Study of the Precipitation-Hardening Process in Commercial Nickel-Base Alloys


Electron metallographic studies have been made of the commercial alloys Inconel-X, Waspaloy, M-252, and Udimet-500 aged at 1400 and 1600 F for periods up to 100 or 1000 hr. Electron micrographs showing the development of the γ phase as a function of aging are presented, and possible relationships between the precipitation process and the variations of the hardness of the alloys during aging are discussed.

Author Information

Bigelow, WC
University of Michigan, Ann Arbor, Mich.
Amy, JA
University of Michigan Research Institute, Ann Arbor, Mich.
Corey, CL
, Detroit, Mich.
Freeman, JW
University of Michigan, Ann Arbor, Mich.
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Developed by Committee: E04
Pages: 73–87
DOI: 10.1520/STP39534S
ISBN-EB: 978-0-8031-5652-4
ISBN-13: 978-0-8031-5651-7