摘要
本文用x-ray衍射,电子探针和金相分析方法,系统地研究了因熔点和比重相差较大,难以用常规冶炼方法互溶的Ti-Pb和Ti-Al两个二元系.在球磨过程中的组织、结构变化。发现在普通熔炼条件下完全不互溶的Pb-Al二元系,在适当的条件下,能够形成固溶度很高的以Pb为溶剂的固溶体。而Ti-Pb二元系在球磨过程中则经过形成过饱和固溶体和非晶化2个阶段,最终形成相图上的PbTi_4金属间化合物。实现了在难互溶体系中,合金的机械合金化合成。
The synthesis of alloys in immiscible systems has been performed by the technique of mechanical alloying (MA). By X-ray diffraction, electron probe and optical microscopy analysis,the structure and microstructure variation during high energy ball milling process has been fol- lowed. It has been found that the Pb base solid solution can be formed in Pb-Al biaary system which is immiscible in ordinary condition by high energy ball milling. In the ball milling process of Ti-Pb system, the mixed Ti and Pb elemental powder transisted to Ti+Pb base solid solution, then to amorphous and finally to Ti_4 Pb intermetallic compound.
出处
《功能材料》
EI
CAS
CSCD
1992年第6期346-349,共4页
Journal of Functional Materials
基金
国家自然科学基金
