CAJ | 학술논문

应高推比航空发动机的需求，英国、美国、俄罗斯、中国等对高温钛合金进行了大量的研究工作。世界各国研发的550℃用高温钛合金主要有IMI829、 Ti-6242S、 BT25、 BT25Y、 Ti-55、 Ti-53311S和Ti-633G合金等。简述了这几种合金的合金化特点，介绍了合金化的各种元素在合金中所起的作用，重点阐述了Si元素对合金蠕变性能的影响；同时回顾了这几种钛合金的研发状况、室高温拉伸性能、应用状况，以及稀土元素对部分高温钛合金组织性能的影响等，并展望了其未来的发展趋势与重点研究方向。
응고추비항공발동궤적수구，영국、미국、아라사、중국등대고온태합금진행료대량적연구공작。세계각국연발적550℃용고온태합금주요유IMI829、 Ti-6242S、 BT25、 BT25Y、 Ti-55、 Ti-53311S화Ti-633G합금등。간술료저궤충합금적합금화특점，개소료합금화적각충원소재합금중소기적작용，중점천술료Si원소대합금연변성능적영향；동시회고료저궤충태합금적연발상황、실고온랍신성능、응용상황，이급희토원소대부분고온태합금조직성능적영향등，병전망료기미래적발전추세여중점연구방향。
In order to meet the requirements for high thrust-weight ratio aero-engines, research on high temperature titanium alloys has never been stopped .The high temperature titanium alloys developed at home and abroad which can be used at 550 ℃ include IMI829, Ti-6242S, BT25, BT25y, Ti-55, Ti-53311S and Ti-633G, etc.Alloying features, effects of various elements adding in the alloy were presented , and emphasis influence of element Si on creep property for the alloys were also represented .Research status , including tensile properties at ambient temperature and at 550 ℃, application , and the influence of rare earth elements on microstructures and properties of some high temperature titanium alloys were reviewed in this paper .The key developing tendency and research directions in the future are also proposed .