摘要
对应用高能球磨制备纯铝纳米晶材料及其硬度进行了研究分析。结果表明:室温高能球磨可制备纯铝纳米晶材料,球磨12h后平均晶粒尺寸为34nm。纳米晶纯铝的显微硬度随球磨时间的延长先升高后降低,然后趋于稳定。球磨12h制备的纯铝纳米晶材料的硬度最高,可以达到111HV。样品在不同温度下退火后,硬度随温度的升高先升高后下降,并且在200℃退火时发生了低温退火的硬化效应。
The preparation of pure aluminum nanocrystalline materials by high energy ball milling and its hardness were investigated and analyzed in this paper. The result shows： the pure aluminum nanocrystalline materials can prepared by high energy ball milling, and the average grain size is 34 nm. The microhardness of pure Al increases at the beginning and then decreases and at last reaches a constant nearly with the increasing of ball milling time. The microhardness reaches the maximum of 111HV after milling for 12 h. After annealing, the microhardness of the pure Al increases firstly with the increasing of anneal temperature, and then starts to drop. Hardening effect happens in the process of low temperature annealing at 200℃
出处
《粉末冶金技术》
EI
CAS
CSCD
北大核心
2006年第6期457-459,共3页
Powder Metallurgy Technology
关键词
高能球磨
纯铝纳米晶体
退火
显微硬度
high energy ball milling
pure AI nanocrystalline
annealing
microhardness
