An Improved non-destructive replication metallography method for investigation of the precipitates in Cr-Mo-V turbine steel

被引：5

作者：

He, Yinsheng ^{[1
]}

Dong, Jiling ^{[1
,2
]}

Choi, Woosung ^{[2
]}

Jung, Jinesung ^{[2
]}

Shin, Keesam ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea

[2] Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China

来源：

SURFACE AND INTERFACE ANALYSIS | 2012年 / 44卷 / 11-12期

基金：

新加坡国家研究基金会;

关键词：

Cr-Mo-V steel; precipitates; carbon replication; non-destructive replica (NDR);

D O I：

10.1002/sia.4958

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 improved non-destructive replication (NDR) metallography method was developed and applied successfully for the precipitates study in 1Cr-1Mo-0.25V turbine rotor steel. The preparation of the replicas for electron microscopy was carried out with a combination of electropolishing, etching, and acetate film setting for extraction medium. The exposure of the precipitates was improved by electropolishing followed by chemical etching. The electropolishing after application of acetate film, instead of stripping, resulted in a quality improvement of the extraction replica. Three types of precipitates (M23C6, Mo2C, and VC) were identified by TEM analysis of thin foil. The types, sizes, and chemical compositions of the precipitates from the bulk SEM observation and TEM analyses of thin foil specimen and the NDR extraction replica matched very well, indicating NDR extracted all types of the precipitates with high efficiency. Copyright (C) 2012 John Wiley & Sons, Ltd.

引用

页码：1411 / 1414

页数：4

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