Scanning Transmission Electron Microscopy Studies of the Microstructure of High Chromium Steel after Long Time Exposure

Kinga B. Rodak; Adam Hernas

doi:10.4028/www.scientific.net/SSP.212.25

Paper Titles

Structure of Aluminium Matrix Composite with Ceramic Preform Obtained by Centrifugal Infiltration Process
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Plasticity and Microstructure of Magnesium - Lithium Alloys
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TEM and X-Ray Examinations of Intermetallic Phases and Carbides Precipitation in an Fe-Ni Superalloy during Prolonged Ageing
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Effect of Solution Treatment on the Microstructure of Ti-C Alloys
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Scanning Transmission Electron Microscopy Studies of the Microstructure of High Chromium Steel after Long Time Exposure
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Effect of Boron Addition on the Microstructure of Ti-47Al-2W-0.5Si Alloy
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Influence of Heat Treatment on the Hardness of ZnAl22Cu3 Alloy
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Dissolution of Carbide Isolates in Acids Using Microwave Technique
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The Correlation between the Surface Geometry of Tested Materials and the Shape of Lubricant Drop
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Scanning Transmission Electron Microscopy Studies of the Microstructure of High Chromium Steel after Long Time Exposure

Abstract:

The detailed microstructural analysis of HCM12 steel after long time (100 000 hours) exposure at service temperatures around 600°C was investigated by means of scanning transmission electron microscopy. The results show, that the recovery processes of the martensite lath structure and δ ferrite are significantly different. Moreover are differences in particles precipitating at the martensite and δ ferrite. The intensive process intragranular M₂₃C₆ and Laves particles precipitating is observed at the martensite/ δ ferrite interfaces.