γ/γ界面对(γ+α2)双相TiAl基合金的力学性能有着重要影响.采用矩阵方法系统地导出了该合金中标定γ相晶体学取向的变换矩阵.利用这些变换矩阵和汇聚束电子衍射技术对XDTM制备的Ti-47Al-2Mn-2Nb(原子分数,%)+0.8TiB2(体积分数,%)合金中γ/γ界面关系及其统计分布进行了测定.
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