Degradation of a Cr-Mo steel by carbide precipitation over long-term service

Lyu, Zhe; Kannan, Rangasayee; Saini, Nitin; Li, Jing; Li, Leijun

doi:10.1016/j.msea.2024.146354

Title: Degradation of a Cr-Mo steel by carbide precipitation over long-term service

Journal Article · 11 March 2024 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI: https://doi.org/10.1016/j.msea.2024.146354 · OSTI ID:2326294

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Univ. of Alberta, Edmonton, AB (Canada)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Microstructure of the 40-year service-exposed 1Cr-0.5Mo steel extracted from pressure vessels through the boat sampling technique was characterized using x-ray diffraction, field-emission scanning electron microscopy, energy dispersive spectrometry, electron backscatter diffraction, focused ion beam, and transmission electron microscopy. The microstructure degradation during long-term service was identified. Statistical crystal plastic ity models were developed to correlate the microstructure and mechanical properties quantitatively. The steel is found significantly strengthened but slightly embrittled. Nanoscale Mo₂C carbides have nucleated within the ferrite matrix over the long-term service, resulting in significant strengthening of the matrix. The coarser grain boundary Cr₂₃C₆ carbides, on the other hand, act as the damage accumulation sites and lead to the degradation.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2326294

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Vol. 898; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (29)

Dislocation mechanics of creep Blum, W.; Eisenlohr, P. Materials Science and Engineering: A, Vol. 510-511 https://doi.org/10.1016/j.msea.2008.04.110	journal	June 2009
Interdiffusion of Cr, Mo, and W in Iron Alberry, P. J.; Haworth, C. W. Metal Science, Vol. 8, Issue 1 https://doi.org/10.1179/msc.1974.8.1.407	journal	January 1974
Effect of the 3rd Dimension within the Representative Volume Element (RVE) on Damage Initiation and Propagation during Full-Phase Numerical Simulations of Single and Multi-Phase Steels Qayyum, Faisal; Umar, Muhammad; Guk, Sergey Materials, Vol. 14, Issue 1 https://doi.org/10.3390/ma14010042	journal	December 2020
The orientation relationship and growth direction of Mo2C in ferrite Dyson, D. J.; Keown, S. R.; Raynor, D. Acta Metallurgica, Vol. 14, Issue 7 https://doi.org/10.1016/0001-6160(66)90007-1	journal	July 1966
A dislocation density based constitutive law for BCC materials in crystal plasticity FEM Ma, A.; Roters, F.; Raabe, D. Computational Materials Science, Vol. 39, Issue 1 https://doi.org/10.1016/j.commatsci.2006.04.014	journal	March 2007
A constitutive model for fcc single crystals based on dislocation densities and its application to uniaxial compression of aluminium single crystals Ma, A.; Roters, F. Acta Materialia, Vol. 52, Issue 12 https://doi.org/10.1016/j.actamat.2004.04.012	journal	July 2004
Dissolution kinetics of NbC particles in the heat-affected zone of type 347 austenitic stainless steel Li, Leijun; Messler, Robert W. Metallurgical and Materials Transactions A, Vol. 33, Issue 7 https://doi.org/10.1007/s11661-002-0035-3	journal	July 2002
Thermo-Calc & DICTRA, computational tools for materials science Andersson, J-O; Helander, Thomas; Höglund, Lars Calphad, Vol. 26, Issue 2 https://doi.org/10.1016/S0364-5916(02)00037-8	journal	June 2002
DAMASK – The Düsseldorf Advanced Material Simulation Kit for modeling multi-physics crystal plasticity, thermal, and damage phenomena from the single crystal up to the component scale Roters, F.; Diehl, M.; Shanthraj, P. Computational Materials Science, Vol. 158 https://doi.org/10.1016/j.commatsci.2018.04.030	journal	February 2019
Insight into Type IV cracking in Grade 91 steel weldments Wang, Yiyu; Kannan, Rangasayee; Li, Leijun Materials & Design, Vol. 190 https://doi.org/10.1016/j.matdes.2020.108570	journal	May 2020
A fatigue life prediction method for coke drum base, weld, and HAZ materials from tensile properties Chen, Jie; Xia, Zihui Materials & Design, Vol. 63 https://doi.org/10.1016/j.matdes.2014.06.056	journal	November 2014
Microstructural aging and property degradation of service-exposed 1Cr–1/2Mo Coke Drum steel Li, Leijun; Kannan, Rangasayee; Wang, Yiyu Materials Science and Technology, Vol. 36, Issue 18 https://doi.org/10.1080/02670836.2020.1852665	journal	December 2020
Precipitation hardening in metals Gladman, T. Materials Science and Technology, Vol. 15, Issue 1 https://doi.org/10.1179/026708399773002782	journal	January 1999
Strain localization and damage in dual phase steels investigated by coupled in-situ deformation experiments and crystal plasticity simulations Tasan, C. C.; Hoefnagels, J. P. M.; Diehl, M. International Journal of Plasticity, Vol. 63 https://doi.org/10.1016/j.ijplas.2014.06.004	journal	December 2014
Fouling During Thermal Processes Speight, James G. Fouling in Refineries https://doi.org/10.1016/B978-0-12-800777-8.00010-3	book	May 2015
Mechanism for H-shaped precipitate formation in 1.25Cr-0.5Mo steel Kim, Myung-Yeon; Jo, Min-Gu; Suh, Jin-Yoo Materials Characterization, Vol. 163 https://doi.org/10.1016/j.matchar.2020.110314	journal	May 2020
Slip planes in bcc transition metals Weinberger, C. R.; Boyce, B. L.; Battaile, C. C. International Materials Reviews, Vol. 58, Issue 5 https://doi.org/10.1179/1743280412Y.0000000015	journal	June 2013
Kinetics of flow and strain-hardening Mecking, H.; Kocks, U. F. Acta Metallurgica, Vol. 29, Issue 11 https://doi.org/10.1016/0001-6160(81)90112-7	journal	November 1981
Some applications of analytical TEM to the characterisation of high temperature equipment Mitchell, D. R. G. Micron, Vol. 32, Issue 8 https://doi.org/10.1016/S0968-4328(00)00091-3	journal	January 2001
Possible applications of Mo2C in the orthorhombic and hexagonal phases explored via ab-initio investigations of elastic, bonding, optoelectronic and thermophysical properties Naher, M. I.; Naqib, S. H. Results in Physics, Vol. 37 https://doi.org/10.1016/j.rinp.2022.105505	journal	June 2022
Microstructural changes in 1Cr-0.5Mo steel after 20 years of service Bišs, V. A.; Wada, T. Metallurgical Transactions A, Vol. 16, Issue 1 https://doi.org/10.1007/BF02656718	journal	January 1985
Differences in service-exposed and artificially aged microstructure and tensile properties of ASTM A204 Grade C steel Sharma, Nitin Kumar; Li, Leijun; Wang, Yajing Materials Science and Technology, Vol. 36, Issue 18 https://doi.org/10.1080/02670836.2020.1852667	journal	December 2020
Degradation of mechanical properties of Cr-Mo-V and 2.25Cr-1Mo steel components after long-term service at elevated temperatures Cheruvu, N. S. Metallurgical Transactions A, Vol. 20, Issue 1 https://doi.org/10.1007/BF02647496	journal	January 1989
Characterization of new solid solution phases in (Y,Ca)(Cr,Co)O₃ system Basceri, Cem; Tas, A. Cuneyt; Timucin, Muharrem Powder Diffraction, Vol. 10, Issue 1 https://doi.org/10.1017/S0885715600014287	journal	March 1995
Heat Transfer and Stress Analysis of Coke Drum for a Complete Operating Cycle Xia, Zihui; Ju, Feng; Du Plessis, Pierre Journal of Pressure Vessel Technology, Vol. 132, Issue 5 https://doi.org/10.1115/1.4001208	journal	August 2010
Slip systems interactions in α-iron determined by dislocation dynamics simulations Queyreau, Sylvain; Monnet, Ghiath; Devincre, Benoît International Journal of Plasticity, Vol. 25, Issue 2 https://doi.org/10.1016/j.ijplas.2007.12.009	journal	February 2009
Mechanical property change and precipitate evolution during long-term aging of 1.25Cr-0.5Mo steel Kim, Myung-Yeon; Chu, Dong-Ju; Lee, Young-Su Materials Science and Engineering: A, Vol. 789 https://doi.org/10.1016/j.msea.2020.139663	journal	July 2020
A Comparison of Two Methods Modeling High-Temperature Fatigue Crack Initiation in Ferrite–Pearlite Steel Fang, Zheng; Wang, Lu; Wang, Zheng Crystals, Vol. 12, Issue 5 https://doi.org/10.3390/cryst12050718	journal	May 2022
DREAM.3D: A Digital Representation Environment for the Analysis of Microstructure in 3D Groeber, Michael A.; Jackson, Michael A. Integrating Materials and Manufacturing Innovation, Vol. 3, Issue 1 https://doi.org/10.1186/2193-9772-3-5	journal	April 2014

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