材料成型过程O相(Ti_(2)AlNb)合金的组织与性能演化  

Evolution Principles of Microstructure and Mechanical Propertiesfor Ti_(2)AlNb Alloy during Materials Forming Process

作　　者：谢志龙 李亚非 高军 佟飞 向顺成 XIE Zhilong;LI Yafei;GAO Jun;TONG Fei;XIANG Shuncheng

机构地区：[1]张家界航空工业职业技术学院,湖南张家界427000 [2]贵阳航空发动机设计研究所,贵州贵阳518000 [3]长沙理工大学,湖南长沙410100

出　　处：《大型铸锻件》2025年第1期18-25,共8页Heavy Casting and Forging

基　　金：湖南省教育厅基础科研项目(22C1380/激光增材制造Ti_(2)AlNb基合金抗蠕变性能与微观机理研究);湖南省教育研究工作者协会“十四五”规划课题(XJKX23B408);中国成人教育学会“十四五”规划课题(2023-579Y)。

摘　　要：以有序O相为主要成分的Ti_(2)AlNb合金,物理、化学、力学性能优异,但成型工艺性能较差,合金组织、性能依赖于加工成型工艺参数。本综述以Ti_(2)AlNb合金的组织形貌、相组成、力学性能为对象,总结锻造、热处理、粉末热等静压等过程中组织-性能演化规律:Ti_(2)AlNb合金的O相为强化强,且存在多种相变形式。通过改变O相含量与形貌、B_(2)相含量、α_(2)相含量与分布从而实现调控合金力学性能。Ti_(2)AlNb alloy with ordered O phase as the main composition has excellent physical,chemical and mechanical properties,but the forming process properties are poor,and the alloy structure and properties depend on the machining process parameters.This review takes the microstructure and morphology,phase composition and mechanical properties of Ti_(2)AlNb alloy as the object,and summarizes the evolution laws of microstructure and properties during forging,heat treatment and hot isostatic pressing of powder:The O phase of Ti_(2)AlNb alloy is strongly strengthened,and there are many phase transitions.The mechanical properties of the alloy can be controlled by changing the O phase content and morphology,B_(2) phase content and α_(2) phase content and distribution.

关 键 词：Ti_(2)AlNb合金 O相 成型工艺 显微组织 

分 类 号：TG146.2[一般工业技术—材料科学与工程]