Journal ArticleDOI
Microstructure-based modeling of hydrogen assisted cracking in pearlitic steels
Jesús Toribio,E Ovejero +1 more
TLDR
In this paper, a microstructure-based modeling of the environmentally assisted fracture phenomenon is proposed to rationalize the results for diferent degrees of drawing, based on the model by Miller and Smith of shear cracking in pearlite.Abstract:
This paper analyzes the process of hydrogen assisted cracking in pearlitic steels, which are increasingly cold drawn in the course of manufacturing to produce prestressing steel wires used in prestressed concrete. A microstructure-based modeling of the environmentally-assisted fracture phenomenon is proposed to rationalize the results for diferent degrees of drawing. The approach is based on two items — (i) the model by Miller and Smith of shear cracking (SC) in pearlite; (ii) the mechanism of hydrogen enhanced decohesion (HEDE) proposed by Gerberich. There is an evolution from a predominant micromechanism of SC in slightly drawn steels to a predominant micromechanism of HEDE in heavily drawn steels.read more
Citations
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Journal ArticleDOI
Role of drawing-induced residual stresses and strains in the hydrogen embrittlement susceptibility of prestressing steels
TL;DR: In this article, the authors analyzed the role of plastic strain in hydrogen embrittlement of prestressing steel and showed the necessity of considering it in hydrogen diffusion calculations, because stress-only assisted diffusion leads to dramatic underestimation of the hydrogen content.
Journal ArticleDOI
Effects of environmental factors on stress corrosion cracking of cold-drawn high-carbon steel wires
TL;DR: In this article, the authors present an experimental study to determine the impacts of environmental factors on SCC in high-carbon steel cable bolts used in ground support system and demonstrate that the presence of hydrogen sulphide is more critical than its concentration in SCC.
Journal ArticleDOI
Investigation of cable bolts for stress corrosion cracking failure
Saisai Wu,Honghao Chen,Hamed Lamei Ramandi,Paul C. Hagan,Bruce Hebblewhite,Alan Crosky,Serkan Saydam +6 more
TL;DR: A load frame capable of applying tensile loads was designed and constructed to simulate and examine SCC of full-size cable bolts (up to 2.4 m in length) under simulated in-situ conditions as discussed by the authors.
Journal ArticleDOI
Modelling hydrogen migration and trapping in steels
Miles Alexander Stopher,Peter Lang,Peter Lang,Ernst Kozeschnik,Pedro E.J. Rivera-Díaz-del-Castillo +4 more
TL;DR: In this article, the role of microstructure in susceptibility to hydrogen trapping is evaluated using a numerical thermokinetic simulation approach using a mean field approach to simulate the diffusion process in a complex micro-structure.
Journal ArticleDOI
Sub critical crack growth in hydrogen assisted cracking of cold drawn eutectoid steel
Edoardo Proverbio,P. Longo +1 more
TL;DR: In this paper, the fracture behavior of eutectoid cold drawn steel wires under constant load in hydrogen charged condition was evaluated by means of Acoustic emission (AE) technique.
References
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Journal ArticleDOI
Effect of cumulative cold drawing on the pearlite interlamellar spacing in eutectoid steel
Jesús Toribio,E. Ovejero +1 more
TL;DR: In this paper, an analysis is made of the influence of continuous cold drawing on the interlamellar spacing of an eutectoid prestressing steel and the effect of cumulative straining on this microstructural parameter.
Journal ArticleDOI
Environment sensitive cracking of pre-stressing steels
TL;DR: Slow strain rate stress corrosion tests on notched or pre-cracked specimens of pre-stressing steel immersed in Ca(OH)2 solutions, to which HCl was added where the pH needed to be reduced, have shown that enhanced cracking results at potentials below about − 900 mV, irrespective of pH, with an intermediate region in which cracking is absent or less severe than at other potentials.
Journal ArticleDOI
Pitting, crevice and stress corrosion cracking studies of cold drawn eutectoid steels
Brian W Cherry,S.M. Price +1 more
TL;DR: In this article, the role of stress corrosion cracking in the failure of cold drawn eutectoid steels in a concrete environment was investigated, and it was shown that pitting and crevice corrosion could be predicted from potentiostatic determinations on unstrained specimens.
Journal ArticleDOI
Hydrogen-assisted micro-damage evolution in pearlitic steel
Jesús Toribio,E. Vasseur +1 more
TL;DR: In this paper, the authors focused on the microscopic appearance and progression of the TTS region from the initiation (subcritical) to the fracture (critical) point, to elucidate on some specific features of the evolution of this hydrogen-affected region throughout fracture tests under a hydrogen environment in a triaxial stress state produced in the vicinity of a notch.
Journal ArticleDOI
Environmentally assisted stress-corrosion cracking of high-strength carbon steel patented wire
TL;DR: In this paper, a reinforced wall of such a structure was severely cracked and the skeletal high-strength carbon steel wires were exposed to environmental corrosive conditions, and a number of wires failed while being subjected to a tension stress lower than their strength.
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Failure analysis of cold drawn eutectoid steel wires for prestressed concrete
Jesús Toribio,Andrés Valiente +1 more