证明了321不锈钢在酸性氯离子溶液中处于活性阳极溶解状态.其应力腐蚀开裂(SCC)无法用钝化膜破裂-再钝化理论或氢脆理论解释,而可能是阳极溶解降低了裂纹尖端金属的开裂强度
Stainless steel AISI 321 in 0.5 mol / L HCl+0.5mol / L NaCl solution at 55℃is confirmed under the active anodic dissolution state. SCC of the steel in the solution can notbe reasonably explatined by the passive film rupture-repassivation theory and by thehydrogen embrittlement theory. It is believed that the fracture stress at the tip of cracks is re-duced by anodic dissolution due to its role in relieving strain hardening layer at crack tip.
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