摘要
Ti_(2)AlNb是一种具有低密度、较好强塑性匹配(23~650℃)和高温疲劳性能优异的航空航天材料,近30年来受到了广泛关注,尤其是国内研究人员围绕Ti_(2)AlNb合金的工程化研究开展了大量工作。受限于Ti_(2)AlNb金属间化合物的本征脆性和缺口敏感性,目前仍难找到稳定、高效和经济的Ti_(2)AlNb复杂构件成形技术。接近工程化应用的成形技术主要包括热变形和粉末热等静压成形,面向工程应用的成形技术难题在于如何改善Ti_(2)AlNb合金的均匀性。
Ti_(2)AlNb is an aerospace material with low density,good strength-ductility matching(23-650℃)and high temperature fatigue properties.In the past three decades,it has received extensive attention,especially in China,and a lot of work has been done on the engineering research of Ti_(2)AlNb alloys.Due to the intrinsic brittleness and notch sensitivity of Ti_(2)AlNb intermetallic compound,it is still difficult to find a stable,efficient and economical forming technology for Ti_(2)AlNb complex components.The forming technologies close to engineering applications mainly include thermal deformation and powder hot isostaric pressing.The most critical challenge in Ti_(2)AlNb engineering application is the improvement of homogeneity.
作者
卢正冠
徐磊
吴杰
杨锐
LU Zheng-guan;XU Lei;WU Jie;YANG Rui(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)
出处
《精密成形工程》
北大核心
2022年第11期55-63,共9页
Journal of Netshape Forming Engineering
基金
中国科学院稳定支持基础研究领域青年团队计划(YSBR-025)。
