ATOMIC-SCALE INVESTIGATION OF GRAIN-BOUNDARY MICROCHEMISTRY IN THE NICKEL-BASED SUPERALLOY ASTROLOY WITH A 3-DIMENSIONAL ATOM-PROBE

被引：24

作者：

LETELLIER, L ^{[1
]}

GUTTMANN, M ^{[1
]}

BLAVETTE, D ^{[1
]}

机构：

[1] INST RECH SIDERURGIE FRANCAISE,ST GERMAIN LAYE,FRANCE

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1994年 / 70卷 / 04期

关键词：

D O I：

10.1080/09500839408240974

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new three-dimensional (3D) atom probe was used to study grain-boundary segregation and ordering phenomena in a two-phase (gamma-gamma') Ni-based superalloy, namely Astroloy. The tomographic images show that the grain-boundary serration is due to gamma' precipitates which develop along boundaries during cooling. These 3D reconstructions also exhibit segregations of B, C, Mo and Cr at grain boundaries. They also reveal that the degree of order in gamma' particles which are located along boundaries is preserved up to the grain boundary.

引用

页码：189 / 194

页数：6

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