Possibility of making Al-Pb alloy plate with Pb dispersed uniformly by LDC (Liquid Dynamic Compact) technology has been studied in the present paper. The relationship among the distance between nozzle and cooled base ...Possibility of making Al-Pb alloy plate with Pb dispersed uniformly by LDC (Liquid Dynamic Compact) technology has been studied in the present paper. The relationship among the distance between nozzle and cooled base plate and the atomization pressure as well as the density of the Al-Pb alloy slab is measured. The relative density of the LDC Al-Pb alloy slab can reach 90% under condition of the present experiment. Microstructure of the slab consist of equal axial grains with 15 approximately 25 μm in diameter and Pb dispersed uniformly in them. After cold or hot rolling of the slab with reduction of 50 approximately 60%, the microstructure can be densified. The rolled Al-Pb alloy plate can be compacted together with pure Al plate very well.展开更多
Isothermal sections at room temperature and 450°C for Al-rich (Al+0.15at%V)-Mg-Zn system have been determined by X-ray diffraction, microscopic observation and DTA methods. Comparing with Al-Mg-Zn system the α-p...Isothermal sections at room temperature and 450°C for Al-rich (Al+0.15at%V)-Mg-Zn system have been determined by X-ray diffraction, microscopic observation and DTA methods. Comparing with Al-Mg-Zn system the α-phase region in isothermal sections at room temperature and 450°C for the system with 0.15at%V is slightly narrowed and expanded respectively. The solubility limits of Zn and Mg in α-Al have been found to be 3.3at% (7.6wt%) and 5.5at%(5.0wt%) respectively at room temperature, and 6.0at% (13.4wt%) and 11.0at% (10.0wt%) at 450°C. The τ phase in this system is a ternary intermetallic compound, which undergoes an allotropic transformation at about 427°C.展开更多
文摘Possibility of making Al-Pb alloy plate with Pb dispersed uniformly by LDC (Liquid Dynamic Compact) technology has been studied in the present paper. The relationship among the distance between nozzle and cooled base plate and the atomization pressure as well as the density of the Al-Pb alloy slab is measured. The relative density of the LDC Al-Pb alloy slab can reach 90% under condition of the present experiment. Microstructure of the slab consist of equal axial grains with 15 approximately 25 μm in diameter and Pb dispersed uniformly in them. After cold or hot rolling of the slab with reduction of 50 approximately 60%, the microstructure can be densified. The rolled Al-Pb alloy plate can be compacted together with pure Al plate very well.
文摘Isothermal sections at room temperature and 450°C for Al-rich (Al+0.15at%V)-Mg-Zn system have been determined by X-ray diffraction, microscopic observation and DTA methods. Comparing with Al-Mg-Zn system the α-phase region in isothermal sections at room temperature and 450°C for the system with 0.15at%V is slightly narrowed and expanded respectively. The solubility limits of Zn and Mg in α-Al have been found to be 3.3at% (7.6wt%) and 5.5at%(5.0wt%) respectively at room temperature, and 6.0at% (13.4wt%) and 11.0at% (10.0wt%) at 450°C. The τ phase in this system is a ternary intermetallic compound, which undergoes an allotropic transformation at about 427°C.
