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THE USE OF CONVERGENT-BEAM ELECTRON-DIFFRACTION TO DETERMINE LOCAL LATTICE-DISTORTIONS IN NICKEL-BASE SUPERALLOYS

被引：29
作者：
KAUFMAN, MJ
PEARSON, DD
FRASER, HL
机构：
[1] UNIV ILLINOIS,DEPT MET,URBANA,IL 61801
[2] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801
来源：
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1986年 / 54卷 / 01期
关键词：
ELECTRONS; -; Diffraction; SUPERALLOYS; Testing;
D O I：
10.1080/01418618608242884
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Convergent-beam electron diffraction has been used to study local lattice distortions of gamma prime (the ordered intermetallic compound based on Ni//3Al) in nickel-base alloys. Specifically, the patterns of higher-order Laue zone lines exhibited in central discs of convergent-beam patterns recorded with the beam accurately aligned parallel to given zone axes have been used to detect small changes in the lattice parameters of gamma prime in two nickel-base superalloys, one the ternary eutectic Ni-12. 8Al-22. 2Mo alloy (where the composition is in atomic per cent), the other Udimet 720 in the commercially heat-treated or partially recrystallized condition.
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页码：79 / 92
页数：14
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