高温合金定向凝固技术,已从六十年代初期的探索研究进入到八十年代的大规模生产应用,有人称八十年代是定向叶片的年代。单晶涡轮叶片的研究也颇有进展,发展最快的美国已开始装机使用,其它一些国家亦会在二、三 Directional solidification technology of superalloys has been explored from the early 1960s to the large-scale production applications in the 1980s. Some said that the 1980s was the year in which directional vanes were used. The research on single crystal turbine blades has also made some progress. The fastest-growing U.S. has begun to use its installed capacity. Other countries will also have their second and third