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首页> 外文期刊>ISIJ international >Roles of Inclusion, Texture and Grain Boundary in Corrosion Resistance of Low-Nickel Austenite Stainless Steel Containing Ce
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Roles of Inclusion, Texture and Grain Boundary in Corrosion Resistance of Low-Nickel Austenite Stainless Steel Containing Ce

机译：夹杂物，织构和晶界在含铈低镍奥氏体不锈钢耐蚀性中的作用

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摘要

The roles of inclusion, texture and grain boundary in corrosion resistance of low-nickel austenite stainless steel containing Ce was investigated by using SEM, TEM, EBSD, XRD and testing technology of electrochemistry. The results revealed that the variation in corrosion resistance of 205 stainless steels containing Ce was higher than specimen without Ce, which depended on ∑3~(n) boundaries and Ce modifying inclusion treatment. Ce addition to steels was prone to forming fine and dispersive Ce multi-phase inclusions containing CeAlO_(3), CeS and Ce_(2)O_(2)S. When addition of Ce was up to 0.016 wt.%, its textures were characterized by pronounced γ -fiber textures comprising {111} and {111} components, as well as the frequency of ∑3~(n) boundaries related to {111} , {111} and {112} components was significantly improved, which was in favor of corrosion resistance improvement. While adding 0.023 wt.%Ce element was detrimental to corrosion resistance of stainless steel.
机译：通过SEM，TEM，EBSD，XRD和电化学测试技术研究了夹杂物，织构和晶界在含铈低镍奥氏体不锈钢耐蚀性中的作用。结果表明，含Ce的205不锈钢的耐蚀性变化高于不含Ce的试样，这取决于∑3〜（n）边界和Ce改性夹杂物处理。铈添加到钢中容易形成含有CeAlO_（3），CeS和Ce_（2）O_（2）S的精细分散的Ce多相夹杂物。当Ce的添加量高达0.016wt。％时，其织构的特征在于具有{111}和{111}成分的明显的γ-纤维织构，以及与之相关的∑3〜（n）边界的频率。 {111}，{111}和{112}组分被显着改善，这有利于耐腐蚀性的提高。当添加0.023重量％的Ce元素时，对不锈钢的耐腐蚀性有害。

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