SYMPOSIA PAPER Published: 01 January 1965
STP43758S

Aging Mechanisms in Precipitation-Hardening Stainless Steels

Source

The mechanism of age hardening in the 17-7PH and PH15-7Mo stainless steels was studied by electron microscopy and “selected area” electron diffraction using direct-transmission thin-foil techniques and the extracted-particle carbon-replica techniques. The precipitates in the specimens aged from 6 to 24 hr at 1050 F were NiAl, and at 100 hr they were NiAl and Ni3Al. The presence of these precipitates was indicated by moiré patterns, round disks, and strain areas.

Author Information

Wilkins, J., C.
Research and Technology, Armco Steel Corp., Middletown, Ohio.
Pence, R., E.
Research and Technology, Armco Steel Corp., Middletown, Ohio.
Perry, D., C.
Research and Technology, Armco Steel Corp., Middletown, Ohio.
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Details
Developed by Committee: A01
Pages: 331–341
DOI: 10.1520/STP43758S
ISBN-EB: 978-0-8031-6001-9
ISBN-13: 978-0-8031-6155-9