Environment sensitive cracking of pre-stressing steels

Parkins, R. N.; Elices, M.; Sánchez‐Gálvez, V.; Caballero, L.

doi:10.1016/0010-938x(82)90017-8

Cited by 97 publications

(41 citation statements)

References 3 publications

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“…In Figure 3 a scheme of the experimental setup is shown, including the three electrodes: saturated calomel electrode (SCE), working electrode (steel specimen) and auxiliary electrode (Pt). According to previous studies [26], these electrochemical conditions promote HE. Two crosshead speeds (or applied displacement rates) were chosen in this work: (i) 0.001 mm/min (relatively low speed: quoted as type 1), and (ii) 0.01 mm/min (relatively high speed: quoted as type 2).…”

Section: Fractographymentioning

confidence: 53%

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Toribio

Vergara

Lorenzo

2016

Metals

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Abstract:The influence of loading rate (crosshead speed) on the fracture process of bluntly notched samples of pearlitic steel under hydrogen environment is analyzed in this paper. Results indicate that the location of the zone where fracture initiates (fracture process zone) in pearlitic steel samples with a blunt notch directly depends on the loading rate or crosshead speed. For slow testing rates, such a zone is placed in the specimen center due to hydrogen diffusion towards the prospective fracture places located in the central area of the section. On the other hand, in the case of high testing rates, the process of hydrogen-assisted fracture initiates near the sample periphery, i.e., in the vicinity of the notch tip, because in such quick tests hydrogen does not have enough time to diffuse towards inner points of the specimen.

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Section: Fractographymentioning

confidence: 53%

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Toribio

Vergara

Lorenzo

2016

Metals

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“…The purpose of this treatment is to increase the yield strength from 950 MPa of the raw material to 1273 MPa. The value of the fracture toughness for this material is K IC = 58 MPa m 0.5 [2]. And, the fracture toughness value for cold drawn steel is 107.9 MPa m 0.5 [4].…”

Section: Introductionmentioning

confidence: 88%

“…The obtained results show decreases around 30-40% of the fracture toughness with respect to the fatigue method value. Table I: Parent pearlitic steel has treated thermally to a temperature about 250 ºC during 15 minutes [2][3]. The purpose of this treatment is to increase the yield strength from 950 MPa of the raw material to 1273 MPa.…”

Section: Introductionmentioning

confidence: 99%

High Strength Steels Fracture Toughness Variation by the Media

Sánchez

Fullea

Andrade

2011

Modelling of Corroding Concrete Structures

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“…Several works have shown that in cold-drawn eutectoid steel wires there are two factors which influence the scattering in rupture times: the surface defects and the residual stresses at the surface region of the wires [5,[62][63][64]. However, until now, it has been hard to correlate the results of the FIP test with the profile of residual stresses because of the difficulties in the residual stress characterization.…”

Section: Stress Corrosion Testmentioning

confidence: 99%

The Role of Residual Stresses in the Performance and Durability of Prestressing Steel Wires

2012

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Residual stresses developed during wire drawing influence the mechanical behavior and durability of steel wires used for prestressed concrete structures, particularly the shape of the stress-strain curve, stress relaxation losses, fatigue life, and environmental cracking susceptibility. The availability of general purpose finite element analysis tools and powerful diffraction techniques (X-rays and neutrons) has made it possible to predict and measure accurately residual stress fields in cold-drawn steel wires. Work carried out in this field in the past decade, shows the prospects and limitations of residual stress measurement, how the stress relaxation losses and environmentally-assisted cracking are correlated with the profile of residual stresses and how the performance of steel wires can be improved by modifying such a stress profile.

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Environment sensitive cracking of pre-stressing steels

Cited by 97 publications

References 3 publications

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

Influence of Loading Rate on the Hydrogen-Assisted Micro-Damage in Bluntly Notched Samples of Pearlitic Steel

High Strength Steels Fracture Toughness Variation by the Media

The Role of Residual Stresses in the Performance and Durability of Prestressing Steel Wires

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