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Investigations on hydrogen‐induced embrittlement of quenched and tempered prestressing steels
Author(s) -
Mietz J.
Publication year - 2000
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/(sici)1521-4176(200002)51:2<80::aid-maco80>3.0.co;2-a
Subject(s) - hydrogen embrittlement , materials science , embrittlement , metallurgy , hydrogen , corrosion , chemistry , organic chemistry
In Germany in recent years failures of more than 30‐year‐old prestressed concrete structures have been observed. In all these cases a quenched and tempered steel type, strength class St. 1420/1570 was used. In order to assess the corrosion risk, i.e. crack initiation and propagation, under depassivating conditions lifetime tests in environments relevant for building practice were carried out using different prestressing steels of this quenched and tempered type of material. From the results it can be concluded that the specific susceptibility of certain prestressing steels is the determining factor with respect to the occurrence of cracks rather than environmental factors.