Distribution of rhenium in a single crystal nickel-based superalloy

被引：89

作者：

Ge, B. H. ^{[1
]}

Luo, Y. S. ^{[2
]}

Li, J. R. ^{[2
]}

Zhu, J. ^{[1
]}

机构：

[1] Tsinghua Univ, Beijing Natl Ctr Elect Microscopy, Adv Mat Lab, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Inst Aeronaut Mat, Natl Key Lab Sci & Technol Adv High Temp Struct M, Beijing 100095, Peoples R China

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 10期

关键词：

Rhenium; Nickel alloys; Microstructure; Scanning transmission electron microscopy; ATOM-PROBE; RE; INTERFACE;

D O I：

10.1016/j.scriptamat.2010.07.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Scanning transmission electron microscopy and energy dispersive X-ray spectroscopy have been utilized to investigate the distribution of Re in a single crystal nickel-based superalloy. Two types of distributions of element Re have been found near interfaces after creep tests, one in the gamma phases, the other near dislocation cores. Re enrichment near dislocation cores is considered to strengthen the high-temperature performance of superalloys by hindering dislocation movement. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：969 / 972

页数：4

共 14 条

[1]

Blavette D., 1988, SUPERALLOYS 1988, P305

[2]

HARRIS K, 1986, HIGH TEMPERATURE ALL, P709

[3] Solute diffusion in metals: Larger atoms can move faster [J].