Ti-43.5Al-4Nb-1Mo-0.1B合金的包套热挤压组织与拉伸性能
刘先锋, 刘冬, 刘仁慈, 崔玉友, 杨锐

Microstructure and Tensile Properties of Ti-43.5Al-4Nb-1Mo-0.1B Alloy Processed by Hot Canned Extrusion
LIU Xianfeng, LIU Dong, LIU Renci, CUI Yuyou, YANG Rui
表2 不同状态下TNM合金微观组织特征
Table 2 Microstructural characteristics of TNM alloy in different conditions
ConditionMicrostructure(α2+γ) colonyLamellarKinkingβ phaseγ phase
typeorientationlamellarvolumeform
LengthWidthRatio
(°)fraction / %
μmμm
As-castNear lamellar82.3352.901.610~180No0.58Graininess
As-extrusion,Near lamellar177.8941.084.260~30, mainYes14.46Graininess,
edgebulk, strip
As-extrusion,Near lamellar204.1350.674.030~30, mainYes15.43Graininess,
centerbulk, strip
Ageing,Near lamellar178.3240.784.370~30, mainYes<10.83Graininess, bulk,
edgestrip, lens-shape
Ageing,Near lamellar210.5651.464.090~30, mainYes<8.83Graininess, bulk,
centerstrip, lens-shape