Co-Ni-Al-Ti系L2_1/L1_2型双相金属间化合物合金热处理显微组织研究

Microstructures of Heat-Treated L2_1/L1_2 Multi-Phase Intermetallic Alloys in the System Co-Ni-Al-Ti

摘要:

对由 Ｌ２１型（Ｃｏ，Ｎｉ）２ＡｌＴｉ和Ｌ１２型（Ｃｏ，Ｎｉ）３（Ａｌ，Ｔｉ）两种有序相组成的Ｃｏ－Ｎｉ－Ａｌ－Ｔｉ系新型金属间化合物高温结构实验用合金进行了不同制度的热处理，并对相应的显微组织特征进行了分析研究，找到了控制显微组织以优化性能的热处理参数。

Abstract:

Various heat-treatments has been carried out for high-temperature structural intermetallic alloys comprised of L21-type (Co,Ni)2AlTi and L12,-type (Co, Ni)3 (Al,Ti) ordered phases in the quaternary system Co-Ni-Al-Ti. The optimum heat- treatment parameters were found out through microstructural analysis, and the properties of the intermetallic alloy have been improved.