摘要
综述了高温合金多晶铸造、定向凝固、单晶制备等几种主要制备技术的原理、方法、研究现状和存在问题,分析了铸造高温合金晶粒组织控制、晶体取向选择和控制,介绍了单晶叶片的引晶和选晶原理和技术,对单晶铸造高温合金的缺陷进行了分析,并展望了高温合金精密铸造的今后发展方向。
This paper reviews the principle, techniques, research statues and current problems of major processing technologies of cast superalloys, such as polycrystalline casting, directional solidification, single-crystal manufacture. The cast structure control and crystal orientation selection during solidification were analyzed. Single-crystal processing including bottom-seeding and spiral selection technique was summarized. The formation mechanism and control methods of typical cast defects in single crystal superalloys were analyzed. Finally, the possible development trends of the superalloy investment casting in future were prospected.
出处
《铸造》
CAS
CSCD
北大核心
2012年第11期1273-1285,共13页
Foundry
基金
国家973计划项目(2010CB631202
2011CB610406)
国家863计划项目(SS2012 AA030802)
国家自然科学基金项目(51101120. 50931004)
关键词
涡轮叶片
高温合金
精密铸造
细晶铸造
定向凝固
单晶
turbine blade
superalloy
investment casting, fine-grain casting
, directional solidification
single crystal