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Abstract 316 L N stainless steels with different grain size and fraction of low-∑ coincidence site lattice boundaries were obtained by grain boundary engineering treatment. The effect of grain boundary character distribution… Click to show full abstract
Abstract 316 L N stainless steels with different grain size and fraction of low-∑ coincidence site lattice boundaries were obtained by grain boundary engineering treatment. The effect of grain boundary character distribution and grain size on corrosion fatigue behavior of 316 L N stainless steel was investigated in borated and lithiated high-temperature water. It was found that the grain boundary engineering treatment increases fatigue life due to grain refinement rather than increased fraction of low-∑ coincidence site lattice boundaries. The low-∑ coincidence site lattice boundaries show no obvious resistance to transgranular cracking. The grain size involved corrosion fatigue cracking mechanism is discussed.
Journal Title: Corrosion Science
Year Published: 2019
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