Assessment of hydrogen-induced cracking (HIC) susceptibility of V micro-alloyed wire rod steel with different heat treatments

Hamdi Elsayed; Johann Höllwarth; Andreas Drexler; Matthew Galler; Bernhard Sonderegger; Rudolf Vallant; Christof Sommitsch

Assessment of hydrogen-induced cracking (HIC) susceptibility of V micro-alloyed wire rod steel with different heat treatments

Hamdi Elsayed, Johann Höllwarth, Andreas Drexler, Matthew Galler, Bernhard Sonderegger, Rudolf Vallant, Christof Sommitsch

Research output: Contribution to conference › Poster

Abstract

Different quenching and tempering heat treatments were applied on a vanadium micro-alloyed wire rod steel, to reach a tensile strength (Rm) of min. 1400 MPa for enhanced high strength screw production. SEM and TEM microstructural analyses showed high density of two precipitate types, i.e. needle-shaped M3C and vanadium rich, globular MX. MatCalc simulations were performed for calculating the precipitation kinetics, the size, number density and phase fraction. The validation showed good agreement in the case of M3C, while the size of MX is underestimated by MatCalc. To evaluate the relative susceptibility against HIC tensile specimens were charged with hydrogen (H) by cathodic polarization at -1.1V vs. Ag/AgCl electrode in an electrochemical cell containing a 3.5% NaCl - 0.1% thiourea solution during the Incremental Step Load Test according to ASTM 1624-12.

Original language	English
Publication status	Published - 2020
Event	EUROCORR 2020 - Square - Brussels meeting centre, Virtuell, Belgium Duration: 7 Sept 2020 → 11 Sept 2020 https://www.eurocorr2020.org/

Conference

Conference	EUROCORR 2020
Country/Territory	Belgium
City	Virtuell
Period	7/09/20 → 11/09/20
Internet address	https://www.eurocorr2020.org/

Fields of Expertise

Advanced Materials Science

Access to Document

EUROCORR ^poster

Cite this

@conference{393e3365c22a4fe9936ee4d8c5f85c3e,

title = "Assessment of hydrogen-induced cracking (HIC) susceptibility of V micro-alloyed wire rod steel with different heat treatments",

abstract = "Different quenching and tempering heat treatments were applied on a vanadium micro-alloyed wire rod steel, to reach a tensile strength (Rm) of min. 1400 MPa for enhanced high strength screw production. SEM and TEM microstructural analyses showed high density of two precipitate types, i.e. needle-shaped M3C and vanadium rich, globular MX. MatCalc simulations were performed for calculating the precipitation kinetics, the size, number density and phase fraction. The validation showed good agreement in the case of M3C, while the size of MX is underestimated by MatCalc. To evaluate the relative susceptibility against HIC tensile specimens were charged with hydrogen (H) by cathodic polarization at -1.1V vs. Ag/AgCl electrode in an electrochemical cell containing a 3.5% NaCl - 0.1% thiourea solution during the Incremental Step Load Test according to ASTM 1624-12. ",

author = "Hamdi Elsayed and Johann H{\"o}llwarth and Andreas Drexler and Matthew Galler and Bernhard Sonderegger and Rudolf Vallant and Christof Sommitsch",

year = "2020",

language = "English",

note = "EUROCORR 2020 ; Conference date: 07-09-2020 Through 11-09-2020",

url = "https://www.eurocorr2020.org/",

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TY - CONF

T1 - Assessment of hydrogen-induced cracking (HIC) susceptibility of V micro-alloyed wire rod steel with different heat treatments

AU - Elsayed, Hamdi

AU - Höllwarth, Johann

AU - Drexler, Andreas

AU - Galler, Matthew

AU - Sonderegger, Bernhard

AU - Vallant, Rudolf

AU - Sommitsch, Christof

PY - 2020

Y1 - 2020

N2 - Different quenching and tempering heat treatments were applied on a vanadium micro-alloyed wire rod steel, to reach a tensile strength (Rm) of min. 1400 MPa for enhanced high strength screw production. SEM and TEM microstructural analyses showed high density of two precipitate types, i.e. needle-shaped M3C and vanadium rich, globular MX. MatCalc simulations were performed for calculating the precipitation kinetics, the size, number density and phase fraction. The validation showed good agreement in the case of M3C, while the size of MX is underestimated by MatCalc. To evaluate the relative susceptibility against HIC tensile specimens were charged with hydrogen (H) by cathodic polarization at -1.1V vs. Ag/AgCl electrode in an electrochemical cell containing a 3.5% NaCl - 0.1% thiourea solution during the Incremental Step Load Test according to ASTM 1624-12.

AB - Different quenching and tempering heat treatments were applied on a vanadium micro-alloyed wire rod steel, to reach a tensile strength (Rm) of min. 1400 MPa for enhanced high strength screw production. SEM and TEM microstructural analyses showed high density of two precipitate types, i.e. needle-shaped M3C and vanadium rich, globular MX. MatCalc simulations were performed for calculating the precipitation kinetics, the size, number density and phase fraction. The validation showed good agreement in the case of M3C, while the size of MX is underestimated by MatCalc. To evaluate the relative susceptibility against HIC tensile specimens were charged with hydrogen (H) by cathodic polarization at -1.1V vs. Ag/AgCl electrode in an electrochemical cell containing a 3.5% NaCl - 0.1% thiourea solution during the Incremental Step Load Test according to ASTM 1624-12.

M3 - Poster

T2 - EUROCORR 2020

Y2 - 7 September 2020 through 11 September 2020

ER -