摘要
采用快速凝固法制备了Al85Zr4Nb4Ni7合金薄带,对快速凝固合金条带的激冷态和热处理态的微观结构进行了DSC、X射线衍射和TEM分析。结果表明:在激冷态时,合金组织为过饱和的α-Al、AlNiZr和Al3Zr共存;在400℃退火时,由于AlNiZr相的分解而出现了Al3Ni相;480℃退火以后有未知相析出,组织中晶粒进一步长大。同时讨论了Al3Zr和Al3Ni对Al85Zr4Nb4Ni7合金热稳定性的影响。
The microstructures of as-quenched and heat-treated Al_ 85Zr_4Nb_4Ni_7 alloy ribbon prepared by rapidly solidified method were investigated by DSC,X ray and TEM.The results show that microstructure of the as-quenched alloy ribbon is composed of supersaturation α-Al,Al_3Zr and metastable AlNiZr phase.A new Al_3Ni phase is formed due to the decomposition of the AlNiZr phase after annealing at 400 ℃.An unknown phase comes out,and the crystal grains further grow coarse after annealing at 480 ℃.Meanwhile,the effects of Al_3Zr and Al_3Ni on the thermal stability of elevated Al_ 85Zr_4Nb_4Ni_7 alloy were approached.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2005年第10期633-634,共2页
Special Casting & Nonferrous Alloys
基金
安徽省教育厅自然科学基金资助项目(200245)
