摘要
采用低温球磨法制备了纳米晶Al-Zn-Mg-Cu系铝合金粉末,对纳米晶粉末进行真空热压,获得纳米晶铝合金块体。采用显微分析方法研究了纳米晶粉末和块体材料的微观组织结构。试验结果表明,纳米晶铝合金粉末具有良好的热稳定性,热压块体的平均晶粒尺寸在100 nm以下。低温球磨所得铝合金粉末晶粒尺寸为48 nm;真空退火试验表明其具有良好的热稳定性;热压块体的平均晶粒尺寸在100 nm以下。
Nanocrystalline powders 6f a Al-Zn-Mg-Cu series aluminum alloy were produced by cryomilling and then vacuum aluminum carried out The results alloy. hot-pressed into bulk nanocrystalline Microstructural investigations were on the nanocrystalline powders and bulk. indicate the good thermal stability of the nanocrystalline aluminum alloy powders. And the average grain size of the hot-pressed bulk alloy is under 100 nm. The results indicate that the owerage grain size of the cryomilled aluminum alloy powders is 48 nm, and these powders have good thermal stability.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2005年第6期827-831,共5页
Chinese Journal of Rare Metals
基金
国家863计划资助(2002AA302502)项目
关键词
纳米晶铝合金
块体
低温球磨
显微组织
nanocrystalline aluminum alloy
bulk
cryomilling
microstructures
