Variation of mechanical properties and microstructures of Al-Pb mixed powder during mechanical milling
来源期刊：中国有色金属学报(英文版)2003年第z1期
论文作者：HE Wen-xiong(贺文雄) FANG Wen-bin(房文斌) WANG Er-de(王尔德) HAN Fei(韩 飞)
文章页码：174 - 178
Key words：mechanical milling; Al-Pb alloy; laminar structure
Abstract: Al-10Pb (in mass fraction) and Al-20Pb mixed powders were mechanically milled. The morphology and the microstructures of the milled powders were observed by scanning electron microscopy and electron probe microscopy, and the microhardness and density of the milled powder were tested. The results show that at beginning of milling, the particle size of Al-Pb mixed powder increases, then it decreases to a stable value. Mechanical milling leads to the formation of laminar structure. With prolonging milling time, the laminar structure is refined, finally fractures to small particles; the hardness of Al-Pb powder is increased and the compact density is decreased. Compared with Al-10Pb powder, Al-20Pb powder has obvious laminar structure, low hardness, and high density.
HE Wen-xiong(贺文雄)1, FANG Wen-bin(房文斌)1, WANG Er-de(王尔德)1,2, HAN Fei(韩 飞)1
(1. Research Institute for Materials,
Harbin Institute of Technology, Harbin 150001, China;
2. School of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China)
Abstract:Al-10Pb (in mass fraction) and Al-20Pb mixed powders were mechanically milled. The morphology and the microstructures of the milled powders were observed by scanning electron microscopy and electron probe microscopy, and the microhardness and density of the milled powder were tested. The results show that at beginning of milling, the particle size of Al-Pb mixed powder increases, then it decreases to a stable value. Mechanical milling leads to the formation of laminar structure. With prolonging milling time, the laminar structure is refined, finally fractures to small particles; the hardness of Al-Pb powder is increased and the compact density is decreased. Compared with Al-10Pb powder, Al-20Pb powder has obvious laminar structure, low hardness, and high density.
Key words:mechanical milling; Al-Pb alloy; laminar structure
