Abstract

The resistance of some low-alloy tubular steels to sulphide stress corrosion cracking (SSCC) was assessed. The influence of microstructure and non-metallic inclusions on SSCC susceptibility was investigated. Three groups of differently heat-treated low-alloy steels with various microstructure and shape of non-metallic inclusions were used. Threshold values σ th and K ISSC were determined. To analyse specific microstructural mechanisms of damage accumulation in SSCC processes the fractographic and metallographic methods were used.

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