SYMPOSIA PAPER Published: 01 January 1983
STP31767S

A Mechanistic Interpretation of the Relationship Between Temper Embrittlement and the Stress-Corrosion Cracking Susceptibility of Nickel-Chromium Steels

Source

The relationship between temper embrittlement and caustic embrittlement is confirmed for a 3.5Ni-Cr steel at a specific operating temperature, pH, and potential. The increased cracking susceptibility, associated with phosphorus segregation to the prior austenite grain boundary, is explained by the formation of an inhibiting environment in the crack enclave which ensures the maintenance of a sharp crack. Detemper embrittlement leads to crack blunting due to dissolution on the crack sides and the subsequent lowering of effective crack-tip stress and cracking susceptibility.

Author Information

Bandyopadhyay, N
General Electric Co., Research and Development Center, Schenectady, N.Y.
Briant, CL
General Electric Co., Research and Development Center, Schenectady, N.Y.
Emigh, P
General Electric Co., Research and Development Center, Schenectady, N.Y.
Ford, FP
General Electric Co., Research and Development Center, Schenectady, N.Y.
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Details
Developed by Committee: E04
Pages: 104–120
DOI: 10.1520/STP31767S
ISBN-EB: 978-0-8031-4858-1
ISBN-13: 978-0-8031-0240-8