High-temperature hydrogen resistance of stainless steels

At elevated temperatures, the influence of hydrogen on various mechanical characteristics of martensitic and disperse-hardened austenitic steels is different. The maraging steel has better characteristics of durability and plasticity and the critical values of static and cyclic crack resistance at t...

Full description

Saved in:
Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2010-11, Vol.46 (2), p.221-233
Main Authors: Balyts’kyi, O. I., Vytvyts’kyi, V. I., Ivas’kevych, L. M., Mochul’s’kyi, V. M., Hrebenyuk, S. O.
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Characterization and Evaluation of Materials
Chemistry and Materials Science
Crack propagation
Evaluation
Fatigue
Fatigue testing machines
Hydrogen
Intermetallic compounds
Maraging steels
Martensitic stainless steels
Materials
Materials Science
Plasticity
Softening
Solid Mechanics
Steel, Stainless
Steels
Structural Materials
Yield strength
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:At elevated temperatures, the influence of hydrogen on various mechanical characteristics of martensitic and disperse-hardened austenitic steels is different. The maraging steel has better characteristics of durability and plasticity and the critical values of static and cyclic crack resistance at temperatures of 450–600°K than the austenitic steel with intermetallic hardening. As a result of the intense temperature softening, its ultimate and yield strengths are much lower than for the austenitic steel. The austenitic steel has higher resistance in terms of the threshold value ∆ K th . At room temperature, the low-cycle fatigue limit proves to be most sensitive to the action of hydrogen, whereas at 673°K, the parameter K fc for the maraging steel decreases.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-010-9286-0