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Evaluation of the Susceptibility of ASTM A216 Grade WCA Mild Steel to Stress Corrosion Cracking in Simulated Salt Repository Environments

机译:评估asTm a216级WCa低碳钢在模拟盐库环境中应力腐蚀开裂的敏感性

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In current conceptual designs, a mild steel (ASTM A216 Grade WCA) is the reference container material for use in high level nuclear waste packages intended for emplacement in a salt repository. The resistance of the steel to stress corrosion cracking (SCC) is being investigated as part of the effort underway to verify the suitability of the material for waste package applications. Static tests (U-bend and bolt-loaded fracture toughness specimens) and dynamic tests (slow strain rate and corrosion fatigue) were conducted on both as-cast and weldment specimens of the material, in both low-Mg and high-Mg halite-saturated brines, in the temperature range of 90 to 200 sup 0 C. The investigations indicate that the steel is not susceptible to SCC under the test conditions employed. (ERA citation 12:009407)

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