摘要
采用激光熔化沉积定向快速凝固工艺,制备出了具有快速定向生长微细柱晶组织的Rene95高温合金板状试样,其一次枝晶间距约为7μm、枝晶间完全无γ/γ′共晶组织析出。结果表明,激光熔化沉积定向快速凝固微细柱晶Rene95高温合金具有优异的力学性能。
Directional rapidly solidified Ni-base superalloy Rene95 with ultra-fine columnar grain structure was produced by the laser melting deposition （LMD） manufacturing process. Primary dendrite arm spacing of the rapidly solidified columnar grains was as low as 7 μm, and there is no any γ/γ＇ eutectic structure was found in the interdendritic zones. The directional rapidly solidified Ni-base superalloy Rene95 with ultra-fine columnar grain has excellent tensile mechanical properties at room-temperature
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第1期169-172,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助项目(50331010)
关键词
激光熔化沉积
定向快速凝固
高温合金
组织
力学性能
laser melting deposition
directional rapid solidification
superalloy
microstructure
mechanical properties
