摘要
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。
The microstructure and stress corrosion behavior of alloy 690 after different rolling pass were investigated by EBSD and slow strain rate test. The results show that grain size of the alloy 690 after three rolling passes is largest,the proportion of low coincidence site lattice grain boundaries is higher and the textures is weakened. The slow strain rate test results show that alloy 690 after three rolling passes has the better resistance of stress corrosion cracking in high temperature and high pressure condition. The microstructure of alloy690 after three rolling passes is more uniform and the proportion of low coincidence site lattice grain boundaries is higher and the resistance of stress corrosion cracking increases.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2015年第3期51-55,共5页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(钢铁联合研究基金)(U1260201)
