ALBU Mihaela1, MAYR Peter3, HOFER Ferdinand1,2，KOTHLEITNER Gerald1,2
1.电子显微镜和纳米分析Graz中心,Steyrergasse17-8010，奥地利格拉茨 ; 2.格拉茨理工大学电子显微镜研究所, Steyrergasse17-8010，奥地利格拉茨; 3.开姆尼茨工业大学制造和焊接技术研究所，Reichenhainer大街70 D - 09126开姆尼茨
Comprehensive analysis of precipitates in rich chromium steels by means of electron energy loss spectrometry spectrum imaging
ALBU Mihaela1, MAYR Peter3, HOFER Ferdinand1,2 and KOTHLEITNER Gerald1,2
1.Graz Center for Electron Microscopy and Nanoanalysis, Steyrergasse 17, A-8010 Graz, Austria; 2.Institute for Electron Microscopy, Graz University of Technology, Steyrergasse 17, A-8010 Graz, Austria; 3.Institute of Manufacturing and Welding Technology, Chemnitz University of Technology, Reichenhainer Straβe 70 D-09126 Chemnitz
Abstract： This paper give insight into the microstructural evolution during heat treatment and creep testing of a boron alloyed 9 wt.% Cr steel, with special emphasis on the role of boron, by using advanced analytical transmission electron microscopy methods.Electron energy loss spectrum images acquired in scanning transmission electron microscopy mode provide full elemental information in the form of compositionally quantified maps (atoms/nm3) of C, N, Fe, Cr, V and B with high spatial and energy resolution.MX precipitates embedded in the M23(C,B)6 particle were identified and analysed with respect to their boron concentration.Energy filtered TEM elemental maps have been processed by applying bivariate histogram analysis in order to recognise an early stage transformation of vanadium nitride particles to the complex nitride named modified Z phase.Moreover, pre-austenite grain boundaries in the creep tested specimens have been charted and the phases were identified via energy filtering TEM, electron energy loss and X-ray spectrometry.
作者简介: ALBU Mihaela (1971-)， 女，博士，研究方向为电子扫描电镜和材料科学； E-mail: mihaela.albu@felmi-zfe.at
引用本文:
ALBU Mihaela, MAYR Peter, HOFER Ferdinand，KOTHLEITNER Gerald. 采用电子能量损失谱成像技术对富铬钢的沉淀物进行综合分析[J]. 冶金分析, 2012, 32(12): 8-14.
ALBU Mihaela, MAYR Peter, HOFER Ferdinand and KOTHLEITNER Gerald. Comprehensive analysis of precipitates in rich chromium steels by means of electron energy loss spectrometry spectrum imaging. , 2012, 32(12): 8-14.
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