Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing
The paper presents the results of research on the microstructure of martensitic X10CrMoVNb9-1 (P91) and X13CrMoCo- VNbNB9-2-1 (PB2) steel subject to long-term ageing at the temperature of 620°C and holding times up to 30 000 hours. The microstructural tests of the examined steel types were performed...
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| Format: | Article |
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Polish Academy of Sciences
2017-03-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | http://www.degruyter.com/view/j/amm.2017.62.issue-1/amm-2017-0040/amm-2017-0040.xml?format=INT |
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| author | Golański G. Jasak J. Zieliński A. Kolan C. Urzynicok M. Wieczorek P. |
| author_facet | Golański G. Jasak J. Zieliński A. Kolan C. Urzynicok M. Wieczorek P. |
| author_sort | Golański G. |
| collection | DOAJ |
| description | The paper presents the results of research on the microstructure of martensitic X10CrMoVNb9-1 (P91) and X13CrMoCo- VNbNB9-2-1 (PB2) steel subject to long-term ageing at the temperature of 620°C and holding times up to 30 000 hours. The microstructural tests of the examined steel types were performed using a scanning microscope Joel JSM - 6610LV and a transmission electron microscope TITAN 80 - 300. The stability of the microstructure of the investigated steels was analyzed using a quantitative analysis of an image, including measurements of the following: the density of dislocations inside martensite/subgrain laths, the width of martensite laths, and the mean diameter of precipitates. It has been concluded that during long-term ageing, the microaddition of boron in PB2 steel significantly influenced the slowing of the process of degradation of the martensitic steel microstructure, as a result of slowing the process of coagulation of M23C6 carbides and Laves phase. It had a favorable effect on the stabilization of lath microstructure as a result of retardation of the processes of recovery and polygonization of the matrix. |
| first_indexed | 2024-12-21T16:31:58Z |
| format | Article |
| id | doaj.art-1e593df5edd341c08aae3ea37f980d8d |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-21T16:31:58Z |
| publishDate | 2017-03-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-1e593df5edd341c08aae3ea37f980d8d2022-12-21T18:57:20ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092017-03-0162126327110.1515/amm-2017-0040amm-2017-0040Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageingGolański G.0Jasak J.1Zieliński A.2Kolan C.3Urzynicok M.4Wieczorek P.5Czestochowa University of Technology, Institute of Materials Engineering, 19 Armii Krajowej Av.,42-200 Częstochowa, PolandCzestochowa University of Technology, Institute of Materials Engineering, 19 Armii Krajowej Av.,42-200 Częstochowa, PolandInstitute of Ferrous Metallurgy, 12-14 K.Miarki Str., 44-100 Gliwice, PolandCzestochowa University of Technology, Institute of Materials Engineering, 19 Armii Krajowej Av.,42-200 Częstochowa, PolandBoiler Elements Factory “Zelkot”, Koszęcin, PolandCzestochowa University of Technology, Institute of Materials Engineering, 19 Armii Krajowej Av.,42-200 Częstochowa, PolandThe paper presents the results of research on the microstructure of martensitic X10CrMoVNb9-1 (P91) and X13CrMoCo- VNbNB9-2-1 (PB2) steel subject to long-term ageing at the temperature of 620°C and holding times up to 30 000 hours. The microstructural tests of the examined steel types were performed using a scanning microscope Joel JSM - 6610LV and a transmission electron microscope TITAN 80 - 300. The stability of the microstructure of the investigated steels was analyzed using a quantitative analysis of an image, including measurements of the following: the density of dislocations inside martensite/subgrain laths, the width of martensite laths, and the mean diameter of precipitates. It has been concluded that during long-term ageing, the microaddition of boron in PB2 steel significantly influenced the slowing of the process of degradation of the martensitic steel microstructure, as a result of slowing the process of coagulation of M23C6 carbides and Laves phase. It had a favorable effect on the stabilization of lath microstructure as a result of retardation of the processes of recovery and polygonization of the matrix.http://www.degruyter.com/view/j/amm.2017.62.issue-1/amm-2017-0040/amm-2017-0040.xml?format=INTHigh-chromium martensitic steelsmicrostructurecarbide precipitation |
| spellingShingle | Golański G. Jasak J. Zieliński A. Kolan C. Urzynicok M. Wieczorek P. Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing Archives of Metallurgy and Materials High-chromium martensitic steels microstructure carbide precipitation |
| title | Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing |
| title_full | Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing |
| title_fullStr | Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing |
| title_full_unstemmed | Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing |
| title_short | Quantitative analysis of stability of 9%Cr steel microstructure after long-term ageing |
| title_sort | quantitative analysis of stability of 9 cr steel microstructure after long term ageing |
| topic | High-chromium martensitic steels microstructure carbide precipitation |
| url | http://www.degruyter.com/view/j/amm.2017.62.issue-1/amm-2017-0040/amm-2017-0040.xml?format=INT |
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