A diffraction study of the γ" phase in INCONEL 718 superalloy

被引：83

作者：

Hong, SJ ^{[1
]}

Chen, WP ^{[1
]}

Wang, TW ^{[1
]}

机构：

[1] Aero Mat Dept, Aeronaut Syst Res Div, Taichung, Taiwan

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2001年 / 32卷 / 08期

关键词：

Material Transaction; Orientation Relationship; Reciprocal Lattice; Superlattice Reflection; Reciprocal Lattice Point;

D O I：

10.1007/s11661-001-0002-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The crystal structure and morphology of the gamma " phase in INCONEL 718 (IN-718) superalloy was studied by using theoretical prediction, transmission electron microscopy, and computer simulation. The experimental results show that (1) The gamma " phase has an ordered body-centered-tetragonal structure with lattice parameters alpha (gamma ") = b(gamma ") congruent to alpha (gamma) and c(gamma ") congruent to 2 alpha (gamma) and is coherent with the matrix (gamma); (2) the gamma " phase in IN-718 alloy forms as thin ellipsoidal discs on the {100} matrix planes with the c-axis being perpendicular to the discs; and (3) the orientation relationship between the gamma " phase and the matrix is (100)(gamma ")// (100)(gamma); [010](gamma "),// [010](gamma).

引用

页码：1887 / 1901

页数：15