The grains are 5-20 mu m in size, and the microstructure exhibits the rapid solidification merits. Shrinkage porosities have been avoided, and the formation of prior particle boundary has been prevented to a large ex...The grains are 5-20 mu m in size, and the microstructure exhibits the rapid solidification merits. Shrinkage porosities have been avoided, and the formation of prior particle boundary has been prevented to a large extent. But there still exist some micropores with various shapes. The relative density of the as-deposited material is 94% on average. The main precipitates in the tested alloy are delta (AlLi), S(Al//2CuMg) and delta prime (Al//3Li) phases. (Edited author abstract) 10 Refs.展开更多
文摘The grains are 5-20 mu m in size, and the microstructure exhibits the rapid solidification merits. Shrinkage porosities have been avoided, and the formation of prior particle boundary has been prevented to a large extent. But there still exist some micropores with various shapes. The relative density of the as-deposited material is 94% on average. The main precipitates in the tested alloy are delta (AlLi), S(Al//2CuMg) and delta prime (Al//3Li) phases. (Edited author abstract) 10 Refs.
