The Al-Li alloy powder was prepared by argon atomization. It was canned in an aluminum container and then the compact powder billet and I/M Al-Li ingot were extruded into φ17mm at 450°C with an area reduction of...The Al-Li alloy powder was prepared by argon atomization. It was canned in an aluminum container and then the compact powder billet and I/M Al-Li ingot were extruded into φ17mm at 450°C with an area reduction of 34:1. Compared the tensile properties between RS-P/M and I/M Al-Li alloys, also studied their process, microstructure and the mechanism of the ageing strengthening in the alloy. The size of atomized powder is in the range of 10-140μm and the cooling rate of the powder is about 103-105K/s. The RS-P/M Al-Li alloy has finer grains and more dispersed precipitates than the I/M Al-Li alloy.展开更多
The Al-Li powder was prepared by argon atomization.The compact Al-Li powder was canned into an aluminum container and degassed in vacuum and extruded into a bar at 400℃.The effect of extrusion ratio on the metallurgi...The Al-Li powder was prepared by argon atomization.The compact Al-Li powder was canned into an aluminum container and degassed in vacuum and extruded into a bar at 400℃.The effect of extrusion ratio on the metallurgical consolidation of the powder has been studied,and the relationship of process- microstructure-property and the mechanism of age strengthening in the alloy were discussed also.展开更多
文摘The Al-Li alloy powder was prepared by argon atomization. It was canned in an aluminum container and then the compact powder billet and I/M Al-Li ingot were extruded into φ17mm at 450°C with an area reduction of 34:1. Compared the tensile properties between RS-P/M and I/M Al-Li alloys, also studied their process, microstructure and the mechanism of the ageing strengthening in the alloy. The size of atomized powder is in the range of 10-140μm and the cooling rate of the powder is about 103-105K/s. The RS-P/M Al-Li alloy has finer grains and more dispersed precipitates than the I/M Al-Li alloy.
文摘The Al-Li powder was prepared by argon atomization.The compact Al-Li powder was canned into an aluminum container and degassed in vacuum and extruded into a bar at 400℃.The effect of extrusion ratio on the metallurgical consolidation of the powder has been studied,and the relationship of process- microstructure-property and the mechanism of age strengthening in the alloy were discussed also.
