Characterization of fine-scale microstructures in aged primary coolant pipe steels. [CF 8 and CF 8M stainless steels]
Characterization of fine-scale microstructures in aged primary coolant pipe steels. [CF 8 and CF 8M stainless steels]
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时效主冷却剂管钢细小微观结构的表征。
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
J. Bentley
中科院分区：
文献类型：
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作者：
M. Miller;J. Bentley
采用原子探针场离子显微镜、分析电子显微镜和光学显微镜研究了铸造CF 8和CF 8 M一回路冷却剂管不锈钢在长期时效后显微组织的变化。铸造双相组织由奥氏体和15%的δ-铁素体组成。在时效过程中，铁素体发生旋节分解，形成细小的网状结构。阿尔法帽。然后...阿尔法帽。'.在铁素体中还观察到细小的G相沉淀。观察到的机械性能的退化可能是在铁氧体中的亚稳分解的结果。参考文献7篇，图14，4个标签。
Atom probe field-ion microscopy, analytical electron microscopy, and optical microscopy have been used to investigate the changes that occur in the microstructure of cast CF 8 and CF 8M primary coolant pipe stainless steels after long-term aging. The cast duplex microstructure consisted of austenite with 15% delta-ferrite. Upon aging the ferrite spinodally decomposed into a fine scaled network of ..cap alpha.. and ..cap alpha..'. A fine G-phase precipitate was also observed in the ferrite. The observed degradation in mechanical properties is probably a consequence of the spinodal decomposition in the ferrite. 7 refs., 14 figs., 4 tabs.