NDLI: Automatic selection and quantitative analysis of carbides on grain boundaries of 12Kh1MF steel after operation at a steam pipeline of a thermal power plant

Content Provider	Springer Nature Link
Author	Vorobel’, R. A. Zhuravel’, I. M. Svirs’ka, L. M. Student, O. Z.
Copyright Year	2011
Abstract	A method of computer processing of metallographic images of structures of materials that consists of the automatic (and, at the final stage, interactive) editing of images, localization of analyzed details, and their quantitative analysis is described. As an example, this method was applied to 12Kh1MF low-alloy steel after its operation for ~13⋅10$^{4}$ h at a main steam pipeline of a thermal power plant. We assessed the structures of a straight segment of the steam pipeline and a tension zone of its bend and the integral number and area occupied by carbides located along grain boundaries, using them as indices of degradation of the steel. By using the developed method, we show that the rate of degradation of the steel in the tension zone of the bend is higher than that on the straight segment of the steam pipeline. The metal near the external surfaces of pipes degrades to a larger extent than near the internal surfaces. This is explained by unequal creep resistances of different segments of the steam pipeline in operation.
Starting Page	393
Ending Page	400
Page Count	8
File Format	PDF
ISSN	1068820X
Journal	Materials Science
Volume Number	47
Issue Number	3
e-ISSN	1573885X
Language	English
Publisher	Springer US
Publisher Date	2011-12-14
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	computer processing of metallographic images automatic quantitative analysis degradation of steel of steam pipelines of thermal power plants Characterization and Evaluation of Materials Structural Mechanics Materials Science Structural Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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