"Microstructures and phase stability of rapidly solidified intermetalic compounds

点击翻译按钮获取中文摘要

The research works which are regarding with rapid solidification of some intermetalic compounds can be summarized as follows ;(1) From the observations for microstructures of rapidly solidified TiAl alloys, informations for phase boundaries among alpha titanium, Ti_3Al and TiAl in the titanium-aluminum binary equilibrium phase diagram which have not been established were estimated.(2) From the results of systematic investigation for the effect of ternary elements on the tendency of metastable phases appearance in rapidly solidified Ni_3Al alloys, it was revealed that additional elements which inhibit the appearance of meta-stable phases have effects of improving the plasticity of Ni_3Al alloys.Although it was not apparent the relationships between these two phenomena, this results would give an effective way of improvement for the lack of plasticity that is considered as a neck for application of interm etallic compounds to structural materials.