新型Co基γ-γ′两相高温合金研究进展

Research Progress in New Co-Based γ-γ' High-Temperature Alloys

综述了L12有序结构沉淀相γ′-Co3(Al,W)强化的新型Co基高温合金的研究进展。重点介绍了在Co-Al-W三元合金的基础上添加不同合金元素后γ-γ′两相合金的典型显微组织、合金的成分偏析行为及高温性能,并展望了新型Co基两相高温合金的应用前景并指出了有待研究的问题。

A brief overview of the research progress of new cobalt-based alloys containing ordered L12 precipitates γ＇-Co3（Al,W） was presented.The emphasis was on the microstructure,composition segregation and high temperature behavior of the γ-γ＇ alloys with addition of different elements into ternary Co-Al-W system.The applications of new cobalt-based alloys were forecast and the research prospect required in future was pointed out.