摘要
Mg24Y5相的细化是进一步提高Mg-10Y合金力学性能的关键。研究了稀土元素Sm对Mg-10Y合金中的Mg24Y5相及其基体组织的细化作用,结果表明:Sm的加入,改善了Mg24Y5相的形貌,促进了细小弥散分布的Mg24Y5颗粒相的形成;同时,Sm的加入,通过固溶作用,进一步细化了基体组织;显微组织的改善导致了合金高温下力学性能的提高。
Refinement of Mg24Y5 phase is a key for the further increase of mechanical properties of Mg-10Y alloy.The refinement effects of rare earth element Sm on Mg24Y5 phase and base microstructure were investigated.The results show that Sm addition improves the morphology of Mg24Y5 phase and promotes the formation of fine and dispersed Mg24Y5 particles.Meanwhile,Sm addition further refines the microstructure of base alloy by the effect of solid solution.The improvement of microstructure leads to the increase of mechanical properties at elevated temperature.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2011年第3期70-72,77,共4页
Journal of Materials Engineering
基金
河南省杰出人才计划项目(084200510018)
河南省基础与前沿技术研究计划项目(092300410184)
