Material influence on the stress corrosion cracking of rock bolts

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dc.contributor.authorGamboa, E.
dc.contributor.authorAtrens, A.
dc.date.issued2005
dc.descriptionCopyright © 2004 Elsevier Ltd All rights reserved.
dc.description.abstractRock bolt stress corrosion cracking (SCC) has been investigated using the linearly increasing stress test (LIST). One series of experiments determined the threshold stress of various bolt metallurgies (900 MPa for 1355AXRC, and 800 MPa for MAC and MA840B steels). The high values of threshold stress suggest that SCC begins in rock bolts when they are sheared by moving rock strata. SCC only occurred for environmental conditions which produce hydrogen on the sample surface, leading to hydrogen embrittlement and SCC. Different threshold potentials were determined for a range of metallurgies. Cold work was shown to increase the resistance of the steel to SCC. Rock bolt rib geometry does not have a direct impact on the SCC resistance properties of the bolt, although the process by which the ribs are produced can introduce tensile stresses into the bolt which lower its resistance to SCC. © 2004 Elsevier Ltd. All rights reserved.
dc.description.statementofresponsibilityErwin Gamboa and Andrej Atrens
dc.identifier.citationEngineering Failure Analysis, 2005; 12(2):201-235
dc.identifier.doi10.1016/j.engfailanal.2004.07.002
dc.identifier.issn1350-6307
dc.identifier.issn1873-1961
dc.identifier.urihttp://hdl.handle.net/2440/43388
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.source.urihttps://doi.org/10.1016/j.engfailanal.2004.07.002
dc.subjectStress corrosion cracking
dc.subjectRock bolts
dc.subjectThreshold stress
dc.subjectHydrogen embrittlement
dc.subjectStress intensity factors
dc.titleMaterial influence on the stress corrosion cracking of rock bolts
dc.typeJournal article
pubs.publication-statusPublished

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