APFIM CHARACTERIZATION OF SINGLE-CRYSTAL PWA-1480 NICKEL-BASE SUPERALLOY

被引：37

作者：

MILLER, MK ^{[1
]}

JAYARAM, R ^{[1
]}

LIN, LS ^{[1
]}

CETEL, AD ^{[1
]}

机构：

[1] PRATT & WHITNEY AIRCRAFT,APPL PHYS,E HARTFORD,CT 06108

来源：

APPLIED SURFACE SCIENCE | 1994年 / 76卷 / 1-4期

关键词：

D O I：

10.1016/0169-4332(94)90339-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An atom-probe field-ion microscopy and analytical electron microscopy characterization of a PWA 1480 nickel-based single-crystal alloy has revealed a high number density of 5 to 10 nm diameter gamma precipitates in the interior of coarse cuboidal gamma' precipitates in material that was heat-treated for 4 h at 1288-degrees-C, 4 h at 1079-degrees-C and 32 h at 871-degrees-C. Atom-probe analysis revealed that the chromium, cobalt and tungsten partitioned preferentially to the gamma precipitates and gamma matrix and the aluminum, titanium and tantalum partitioned to the gamma' precipitates. No evidence of tungsten clustering in the gamma matrix was found.

引用

页码：172 / 176

页数：5

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