Stress corrosion of steam turbine disc and rotor steels

Journal Article · Sat Sep 01 00:00:00 EDT 1979 · Corrosion; (United States)

DOI:https://doi.org/10.5006/0010-9312-35.9.402· OSTI ID:5804692

Roberts, B W ^[1]; Greenfield, P

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1. GEC Turbine Generators Ltd., Leicester, England

A range of low alloy steels, commonly used in the construction of steam turbines, has been tested for susceptibility to stress corrosion cracking (SCC) in pure condensing steam and pure water. It has been shown that when tested for prolonged periods, the steels will initiate cracks in steam only at very high stresses. Initiation is promoted by stagnant conditions and retarded by residual compressive stresses. Propagation rates of cracks are low but increase as the strength level of the steel is raised. A low strength molybdenum free steel is much more resistant to stress corrosion than any of the other steels examined.

• OSTI ID: 5804692
• Journal Information: Corrosion; (United States), Journal Name: Corrosion; (United States) Vol. 35:9; ISSN CORRA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CORROSION
CRACKS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MACHINERY
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
STEAM TURBINES
STEELS
STRESS CORROSION
TURBINES
TURBOMACHINERY