摘要
对比分析了TiAl和Mo_5Si_3金属间化合物的性能特点、应用前景和存在问题,并对这两种金属间化合物的合金化研究作了综述和展望。近来研究微量镁和镍在TiAl合金中的作用发现,微合金化可提高变形合金的热加工工艺性能和促进铸造合金组织的细化,是TiAl金属间化合物进一步合金化研究的重要方向。根据模量计算和常用合金元素在Mo_5Si_3相中溶解度的测定结果,讨论了以合金化韧化Mo_5Si_3化合物的潜力。
This paper evaluates the characteristics application potentials and limitations of T1Al and Mo5Si3mtermetallics-based high-temperature structural materials. Research on alloying process in those two compounds is reviewed and its prospect has also been discussed based on the results of current researches. It was found that the mi-croalloying could be a promising method to further modify the mechanical and technological properties of T1Al alloys. For instance,small amount of Mg can obviously extend the process window of the wrought TiAl alloys,and adding minor Ni is helpful to the microstrcuture refinement of the cast alloys. The modulus calculations for Mo5Si3 compound and solubility measurements of alloying elements in Mo5Si3 phase indicate that Mo5Si3 alloys have a ductile nature and can be ductihzed by alloying process in principle.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2000年第2期22-24,共3页
Materials Reports
基金
中国瑞典两国政府间科技合作项目(批准号 98-a3)
国家自然科学基金(批准号 59881004)
