采用背散射电子衍射分析技术(EBSD)和慢应变速率拉伸实验方法研究不同轧制道次的Inconel 690合金微观组织和应力腐蚀开裂(scc)行为.结果表明,三道次轧制的690合金样品的晶粒更大,低重合点阵晶界所占比例更高,织构程度更弱.三道次轧制的690合金在高温高压纯水中的慢应变速率拉伸试验表现出更好的耐应力腐蚀性能.三道次轧制的690合金可以形成更加均匀的组织,提高低重合点阵晶界所占比例,增加其抗应力腐蚀能力.
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