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Effect of temperature upon stress corrosion cracking of HY-180M steel in 3.5 Pct NaCI

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Abstract

A fracture mechanics and fractographic study of stress corrosion cracking (SCC) of heat treated HY-180 M steel was undertaken over the temperature range 22 to 95 °C at applied potentials of −0.28 VSHE (−0.48 VAg/AgCl) and −0.80 VSHE (−1.0 VAg/Agcl). Particular attention was directed toward Region II behavior, where crack propagation rates were independent of stress intensity(K l). Region II rates were always higher at the less noble potential of −0.80 VSHE than at the more noble potential of — 0.28 VSHE. However, fractography studies suggested that the basic mechanism of cracking at both potentials was the same, and involved hydrogen embrittlement. An Arrhenius analysis of Region II rates showed that crack propagation was under the control of more than one process. Consequently, the mechanistic details remained obscure.

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Authors and Affiliations

  1. Dominion BridgeCo. Ltd., Lachine, PQ, Canada

    Sathish Rao Bala (Senior Research Metallurgist)

  2. Department of Metallurgical Engineering, Universityof British Columbia, Vancouver, BC, Canada

    Desmond Tromans (Associate Professor)

Authors
  1. Sathish Rao Bala
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  2. Desmond Tromans
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Formerly Research Associate in theDepartment of Metallurgical Engineering, University of BritishColumbia.

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Rao Bala, S., Tromans, D. Effect of temperature upon stress corrosion cracking of HY-180M steel in 3.5 Pct NaCI. Metall Trans A 11, 1161–1165 (1980). https://doi.org/10.1007/BF02668140

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  • DOI: https://doi.org/10.1007/BF02668140

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