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Creep deformation and failure of E911/E911 and P92/P92 similar weld-joints

  1. TitleCreep deformation and failure of E911/E911 and P92/P92 similar weld-joints
    Author Falat Ladislav 1978 SAVMATVY - Ústav materiálového výskumu SAV    SCOPUS
    Co-authors Výrostková Anna 1953 SAVMATVY - Ústav materiálového výskumu SAV

    Homolová Viera 1973 SAVMATVY - Ústav materiálového výskumu SAV    SCOPUS

    Svoboda Milan

    Source document Engineering Failure Analysis. Vol. 16 (2009), p. 2114-2120
    Languageeng - English
    CountryGB - Great Britian
    Document kindrozpis článkov z periodík (rbx)
    CitationsKLADARIĆ, I. - SAMARDŽIĆ, I. - STOIĆ, A. The influence of gas heating on material properties of P92 steel during boiler tube alignment. In Strojarstvo, 2009, vol.51, no.4, 341-346.
    GONG, Yi - CAO, Jian - JI, Li-Na - YANG, Chao - YAO, Cheng - YANG, Zhen-Guo - WANG, Jun - LUO, Xiao-Ming - GU, Fu-Ming - QI, An-Fang - YE, Shang-Yun - HU, Zheng-Fei. Assessment of creep rupture properties for dissimilar steels welded joints between T92 and HR3C. In FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 2011, vol.34, no.2, 83-96.
    WANG XUE - PAN QIAN-GANG - LIU ZHI-JUN - ZENG HUI-QIANG - TAO YONG-SHUN. Creep rupture behaviour of P92 steel weldment. In ENGINEERING FAILURE ANALYSIS, 2011, vol.18, no.1, 186-191.
    LEWIS, Gladius - SHAW, Kevin M. Creep Constitutive Model and Component Lifetime Estimation: The Case of Niobium-Modified 9Cr-1Mo Steel Weldments. In JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2011, vol.20, no.7, 1310-1314.
    WANG, Xue - PAN, Qiangang - LIU, Zijun - ZENG, Huiqiang - TAO, Yongshun. Creep fracture analysis of W strengthened 9%Cr steel weldment. In MATERIALS PROCESSING TECHNOLOGIES, PTS 1 AND 2, 2011, vol.154-155, no., 1699-1704.
    LIU, J.-J. - CHEN, G.-H. - YU, X.-H. - WANG, J.-Q. - HUA, J. - SONG, Y.-M. - ZHANG, T. - TANG, W.-M. Microstructure and mechanical properties of T92/HR3C dissimilar steel welding joints. In Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment, 2011, vol.32, no.2, 54-60.
    CHEN, G.-H. - YU, X.-H. - WANG, J.-Q. - HUA, J. - LIU, J.-J. - SONG, Y.-M. - ZHANG, T. - ZHANG, J.-H. - TANG, W.-M. Microstructure and mechanical properties of T92/HR3C dissimilar steel welding joints after high temperature aging. In Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment, 2011, vol.32, no.9, 89-95.
    LIU, F. - LI, T. - LIANG, J. - YAO, B. - WANG, C. Effect of thermal aging on microstructure and mechanical properties of P92 steel weld joints. In Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2011, vol.31, no.14, 121-126.
    SHI, Duoqi - DONG, Chengli - YANG, Xiaoguang - ZHANG, Lei - HOU, Jinbao - LIU, Ying. Experimental investigations on creep rupture strength and failure mechanism of vacuum brazed joints of a DS superalloy at elevated temperature. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, vol.545, no., 162.
    ZHAO, Lei - JING, Hongyang - XU, Lianyong - HAN, Yongdian - XIU, Junjie. Experimental study on creep damage evolution process of Type IV cracking in 9Cr-0.5Mo-1.8W-VNb steel welded joint. In ENGINEERING FAILURE ANALYSIS, 2012, vol.19, no., 22.
    SONG, Y.-M. - CHEN, G.-H. - YU, X.-H. - LIU, J.-J. - WANG, J.-Q. - HUA, J. - ZHANG, T. - ZHANG, J.-H. - TANG, W.-M. Tensile plastic deformation and fracture behavior of T92/HR3C dissimilar welded joints at high temperatures. In Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment, 2012, vol.33, no.2, 72-78.
    CHEN, Guohong - SONG, Youming - WANG, Jiaqing - LIU, Junjian - YU, Xinhai - HUA, Jian - BAI, Xiaolong - ZHANG, Tao - ZHANG, Jianhua - TANG, Wenming. High-temperature short-term tensile test and creep rupture strength prediction of the T92/TP347H dissimilar steel weld joints. In ENGINEERING FAILURE ANALYSIS. ISSN 1350-6307, 2012, vol. 26, no., pp. 220.
    ZHANG, Q. - WANG, J.-Q. - CHEN, G.-H. - LIU, J.-J. - HUA, J. - YU, X.-H. - ZHANG, T. - ZHANG, J.-H. - TANG, W.-M. Microstructures and mechanical properties of T92/Super304H dissimilar steel weld joints. In Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals, 2013, 23, 2, pp. 396-402.
    SAKTHIVEL, T. - VASUDEVAN, M. - LAHA, K. - PARAMESWARAN, P. - CHANDRAVATHI, K. S. - SELVI, S. Panneer - MADURAIMUTHU, V. - MATHEW, M. D. Creep rupture behavior of 9Cr-1.8W-0.5Mo-VNb (ASME grade 92) ferritic steel weld joint. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2014, vol. 591, no., pp. 111.
    SONG, Y. M. - CHEN, G. H. - WANG, J. Q. - LIU, J. J. - YU, X. H. - HUA, J. - BAI, X. L. - ZHANG, T. - ZHANG, J. H. - TANG, W. M. Short-Term High-Temperature Tensile Tests and Prediction of Long-Term Strength of Welded Joints of Dissimilar Steels T92/HR3C. In METAL SCIENCE AND HEAT TREATMENT. ISSN 0026-0673, 2014, vol. 55, no. 11-12, pp. 614.
    CHU, Qiaoling - ZHANG, Min - LI, Jihong - CHEN, Yinni - LUO, Hailong - WANG, Qiang. Failure analysis of a steam pipe weld used in power generation plant. In ENGINEERING FAILURE ANALYSIS. ISSN 1350-6307, 2014, vol. 44, no., pp. 363.
    LIANG, Jun - ZHAO, Lei - ZHAO, Yanfen. Mechanical properties and microstructures of dissimilar steel welded joints between domestic steel S30432 and steel T92. In Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering. ISSN 16747607, 2013-10-01, 33, 10, pp. 815-821.
    GONG, Xiufang - GAO, Zhenhuan - NIE, Liping - ZHANG, Bo - JIANG, Lei - ZHANG, Bangqiang - YANG, Gongxian - ZHANG, Congping. Investigations on the degradation mechanism of welded joints of advanced 9%Cr-Mo-Co-B steel used for 620°C USC steam turbine. In Advances in Materials Technology for Fossil Power Plants Proceedings from the 7th International Conference, 2014-01-01, pp. 948-959.
    MENG, Donghai - LU, Fenggui - CUI, Haichao - DING, Yuming - TANG, Xinhua - HUO, Xin. Investigation on creep behavior of welded joint of advanced 9% Cr steels. In JOURNAL OF MATERIALS RESEARCH. ISSN 0884-2914, 2015, vol. 30, no. 2, pp. 197.
    DENG, Jianguo - LIANG, Zhiyuan - HUI, Shi'en - ZHAO, Qinxin. Aging Treatment on the Microstructures and Mechanical Properties of New Groove T92/Super 304H Dissimilar Steel Joints. In HIGH TEMPERATURE MATERIALS AND PROCESSES. ISSN 0334-6455, 2015, vol. 34, no. 5, pp. 425.
    CHAI, X. - BUNDY, J. C. - AMATA, M. A. - ZHANG, C. - ZHANG, F. - CHEN, S. - BABU, S. S. - KOU, S. Creep Rupture Performance of Welds of P91 Pipe Steel. In WELDING JOURNAL. ISSN 0043-2296, 2015, vol. 94, no. 5, pp. 145.
    HAN, J.J. - KIM, Y.J. - JERNG, D. W. - NIKBIN, K. - DEAN, D. Quantification of creep stresses within HAZ in welded branch junctions. In FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES. ISSN 8756-758X, 2015, vol. 38, no. 1, pp. 113.
    LIU, Wen - LIU, Xia - LU, Fenggui - TANG, Xinhua - CUI, Haichao - GAO, Yulai. Creep behavior and microstructure evaluation of welded joint in dissimilar modified 9Cr-1Mo steels. In Materials Science and Engineering A. ISSN 09215093, 2015-09-07, 644, pp. 337-346.
    CENIGA, Ladislav. Analytical models of thermal stresses in composite materials IV. In Analytical Models of Thermal Stresses in Composite Materials IV, 2015-01-01, pp. 1-192.
    SHANMUGARAJAN, B. - SATHIYA, P. - BUVANASHEKARAN, G. Mechanical and metallurgical properties of autogenous laser welded P92 material. In JOURNAL OF MANUFACTURING PROCESSES. ISSN 1526-6125, 2016, vol. 24, no., pp. 11-18.
    SHRESTHA, Triratna - BASIRAT, Mehdi - ALSAGABI, Sultan - SITTIHO, Anumat - CHARIT, Indrajit - POTIRNICHE, Gabriel P. Creep rupture behavior of welded Grade 91 steel. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2016, vol. 669, no., pp. 75-86.
    SKLENICKA, V. - KUCHAROVA, K. - SVOBODOVA, M. - KVAPILOVA, M. - KRAL, P. - HORVATH, L. Creep properties in similar weld joint of a thick-walled P92 steel pipe. In MATERIALS CHARACTERIZATION. ISSN 1044-5803, 2016, vol. 119, no., pp. 1-12.
    FEDORIKOVÁ, Alica - KVAČKAJ, Tibor - KOČIŠKO, Róbert - BIDULSKÝ, Róbert - PETROUŠEK, Patrik - BIDULSKÁ, Jana - DOMOVCOVÁ, Lucia. Hot compression test of 9 Cr-1 mo steel – Numerical simulation. In Acta Metallurgica Slovaca. ISSN 13351532, 2016-01-01, 22, 2, pp. 102-110.
    GUO, J. - JEPSON, M. A. E. - THOMSON, R. C. MICROSTRUCTURAL CHARACTERISATION OF CREEP TESTED 9CR WELDS FOR MARBN STEEL. In ADVANCES IN MATERIALS TECHNOLOGY FOR FOSSIL POWER PLANTS: PROCEEDINGS FROM THE EIGHTH INTERNATIONAL CONFERENCE, 2016, vol., no., pp. 962-973.
    PANDEY, Chandan - MAHAPATRA, M. M. - KUMAR, Pradeep - SAINI, N. Effect of strain rate and notch geometry on tensile properties and fracture mechanism of creep strength enhanced ferritic P91 steel. In JOURNAL OF NUCLEAR MATERIALS. ISSN 0022-3115, 2018, vol. 498, no., pp. 176-186.
    PANDEY, Chandan - MAHAPATRA, M. M. - SAINI, N. - KUMAR, P. Homogenization of P91 weldments using varying normalizing and tempering treatment. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2018, vol. 710, no., pp. 86-101.
    PANDEY, Chandan - MAHAPATRA, M. M. - KUMAR, Pradeep - VIDYRATHY, R. S. - SRIVASTAVA, A. Microstructure-based assessment of creep rupture behaviour of cast-forged P91 steel. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2017, vol. 695, no., pp. 291-301.
    PANDEY, Chandan - MAHAPATRA, M. M. - KUMAR, Pradeep - SAINI, N. - SRIVASTAVA, A. Microstructure and mechanical property relationship for different heat treatment and hydrogen level in multi-pass welded P91 steel joint. In JOURNAL OF MANUFACTURING PROCESSES. ISSN 1526-6125, 2017, vol. 28, no., pp. 220-234.
    FETNI, Seifallah - TOUMI, Arwa - MKAOUAR, Imed - BOUBAHRI, Chokri - BRIKI, Jalel. Microstructure evolution and corrosion behaviour of an ASTM A213 T91 tube after long term creep exposure. In ENGINEERING FAILURE ANALYSIS. ISSN 1350-6307, 2017, vol. 79, no., pp. 575-591.
    ZHANG, J. - DU, B. Sh. - LI, X. M. - QIN, G. L. - ZOU, Y. Microstructure evolution of P92 steel weld metal after service for 8000 h. In KOVOVE MATERIALY-METALLIC MATERIALS. ISSN 0023-432X, 2017, vol. 55, no. 2, pp. 115-121.
    SKLENIČKA, V. - KUCHAŘOVÁ, K. - KVAPILOVÁ, M. - SVOBODA, M. - KRÁL, P. - DVOŘÁK, J. Creep properties of simulated heat-affected zone of HR3C austenitic steel. In Materials Characterization. ISSN 10445803, 2017-06-01, 128, pp. 238-247.
    SHANMUGARAJAN, B. - SATHIYA, P. - BUVANASHEKARAN, G. Effect of Shielding Gases in Autogenous Laser Welding of P92 Material. In TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS. ISSN 0972-2815, 2019, vol. 72, no. 7, pp. 1707-1720.
    LIU, Dezheng - LI, Yan - XIE, Xiangdong - LIANG, Guijie - ZHAO, Jing. Estimating the Influences of Prior Residual Stress on the Creep Rupture Mechanism for P92 Steel. In METALS. ISSN 2075-4701, 2019, vol. 9, no. 6, pp.
    WANG, Xue - DU, Chengchao - LIU, Hong - LIU, Hongwei. Effect of Laves phase on the toughness of P92 weld metals. In FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES. ISSN 8756-758X, 2019, vol. 42, no. 3, pp. 686-697.
    LIANG, Z. - GUI, Y. - ZHAO, Q. INVESTIGATION OF MICROSTRUCTURES AND MECHANICAL PROPERTIES OF T92 MARTENSITIC STEEL/SUPER304 AUSTENITIC STEEL WELD JOINTS MADE WITH THREE WELDING CONSUMABLES. In ARCHIVES OF METALLURGY AND MATERIALS. ISSN 1733-3490, 2018, vol. 63, no. 3, pp. 1249-1256.
    YOKOBORI, A. Toshimitsu - SUGIURA, Ryuji - SATO, Kazuto - SHIGEYAMA, Haruhisa - TABUCHI, Masaaki. The effect of vacancy diffusion and concentration on creep crack initiation in weldment of a C(T) specimen for high Cr steel. In STRENGTH FRACTURE AND COMPLEXITY. ISSN 1567-2069, 2018, vol. 11, no. 2-3, pp. 107-120.
    BENAARBIA, A. - XU, X. - SUN, W. - BECKER, A. A. - JEPSON, Mark A. E. Investigation of short-term creep deformation mechanisms in MarBN steel at elevated temperatures. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2018, vol. 734, no., pp. 491-505.
    WANG SHUO - WEI LIMIN - CHENG YI - TAN SHUPING. Post-weld Heat Treatment and Groove Angles Affect the Mechanical Properties of T92/Super 304H Dissimilar Steel Weld Joints. In HIGH TEMPERATURE MATERIALS AND PROCESSES. ISSN 0334-6455, 2018, vol. 37, no. 7, pp. 649-654.
    SONG, Yuxuan - HUANG, Xianwei - GAO, Zengliang - LI, Xiangqing - MA, Yi. Nanoindentation creep behavior of RPV’s weld joint at room temperature. In Mechanics of Time-Dependent Materials. ISSN 13852000, 2019-01-01, pp.
    SALUR, E., ACARER, M., KABAKCI, F., KESKINKILIC, S., ACAR, FK., CICEK, B.: Microstructural and Mechanical Characterization of 9Cr-1Mo-1W Weld Metal. In: Hittite Journal of Science and Engineering, Vol. 5, 2018, Iss. 3, p. 203-208 ISSN 2148-4171
    AKHTAR, Modassir - KHAJURIA, Akhil - PANDEY, Manish Kumar - AHMED, Iqbal - BEDI, Raman. Effects of boron modifications on phase nucleation and dissolution temperatures and mechanical properties in 9%Cr steels: alloy design. In MATERIALS RESEARCH EXPRESS. ISSN 2053-1591, 2019, vol. 6, no. 12, pp.
    CHEN, Jianguo - LIU, Chenxi - WEI, Chen - LIU, Yongchang - LI, Huijun. Study on microstructure and mechanical properties of direct diffusion bonded low-carbon RAFM steels. In JOURNAL OF MANUFACTURING PROCESSES. ISSN 1526-6125, 2019, vol. 43, no., pp. 192-199.
    SAKTHIVEL, T. - SASIKALA, G. - DASH, Manmath Kumar - RAO, P. Syamala. Creep Deformation and Rupture Behavior of P92 Steel Weld Joint Fabricated by NG-TIG Welding Process. In JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE. ISSN 1059-9495, 2019, vol. 28, no. 7, pp. 4364-4378.
    AKHTAR, Modassir - KHAJURIA, Akhil - PANDEY, Manish Kumar - AHMED, Iqbal. Effects of boron modifications on phase nucleation and dissolution temperatures and mechanical properties in 9%Cr steels: sensitivity and stability. In MATERIALS RESEARCH EXPRESS. ISSN 2053-1591, 2019, vol. 6, no. 12, pp.
    DING, Kai - LI, Xiaohong - ZHAO, Bingge - WANG, Peng - DING, Yuming - LU, Fenggui - GAO, Yulai. Clarification of the false liquation crack existed in 9% Cr/CrMoV dissimilar welded joint by comparative etching process and in situ laser scanning confocal microscope. In JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T. ISSN 2238-7854, 2020, vol. 9, no. 3, pp. 6048-6058.
    SONG, Yuxuan - HUANG, Xianwei - GAO, Zengliang - LI, Xiangqing - MA, Yi. Nanoindentation creep behavior of RPV's weld joint at room temperature. In MECHANICS OF TIME-DEPENDENT MATERIALS. ISSN 1385-2000, 2020, vol. 24, no. 3, pp. 253-263.
    STEIN, Frank - LEINEWEBER, Andreas. Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties. In JOURNAL OF MATERIALS SCIENCE. ISSN 0022-2461, 2021, vol. 56, no. 9, pp. 5321-5427.
    WANG, Xue - WANG, Xiao - ZHANG, Ya-Lin - WANG, Chuang - LI, You - HUANG, Qiao-Sheng. Microstructure and creep fracture behavior in HR3C/T92 dissimilar steel welds. In MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING. ISSN 0921-5093, 2021, vol. 799, no., pp.
    XU, X. - SIEFERT, J. A. - PARKER, J. D. - THOMSON, R. C. Influence of microstructure on cavitation in the heat affected zone of a Grade 92 steel weld during long-term high temperature creep. In MATERIALS CHARACTERIZATION. ISSN 1044-5803, 2020, vol. 170, no., pp.
    REN, Facai - TANG, Xiaoying - XU, Jinsha - SI, Jun - YUAN, Yiwen. Microstructure evolution and creep rupture behavior of modified 9CR-1MO steel welded joint. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. ISSN 0277027X, 2020-01-01, 6, pp.
    WU, Guanzhi - DING, Kai - WEI, Tao - QIAO, Shangfei - LIU, Xia - GAO, Yulai. Rupture behavior and fracture mode for Inconel 625-9% Cr steel dissimilar welded joints at high temperature. In ENGINEERING FAILURE ANALYSIS, 2021, vol. 125, no., pp. ISSN 1350-6307. Dostupné na: https://doi.org/10.1016/j.engfailanal.2021.105412.
    GOTTI, A. - DI GIANFRANCESCO, A. - FERRARA, A. - GARIBOLDI, E. - MERCKLING, G. - NAVONE, S. - PARODI, S. - POGGIO, E. - RIPAMONTI, D. - VERDINO, S. Creep properties of ASTM A335 P92 pipe parent material and erection welded joint simulation: effect of 1 or 3 PWHT. In MATERIALS AT HIGH TEMPERATURES. ISSN 0960-3409, NOV 2 2022, vol. 39, no. 6, SI, p. 647-654. Dostupné na: https://doi.org/10.1080/09603409.2022.2135720.
    HUANG, Y.Y. - LUO, X.W. - ZHAN, Y.C. - CHEN, Y. - YU, L.P. - FENG, W. - XIONG, J.K. - YANG, J.P. - MAO, G.J. - YANG, L. - NIE, F.H. High-temperature creep rupture behavior of dissimilar welded joints in martensitic heat resistant steels. In ENGINEERING FRACTURE MECHANICS. ISSN 0013-7944, OCT 1 2022, vol. 273. Dostupné na: https://doi.org/10.1016/j.engfracmech.2022.108739.
    JIAO, Y.J. - SHENG, G.M. - LI, X. - ZHANG, Y.T. - YUAN, X.J. Microstructure and mechanical properties of TLP-bonded 9CrMoCoB heat-resistant steel with Ni-Cr-B interlayer. In MATERIALS RESEARCH EXPRESS. JUN 1 2022, vol. 9, no. 6. Dostupné na: https://doi.org/10.1088/2053-1591/ac6ec1.
    JUNEK, M. - SVOBODOVA, M. - HORVATH, J. - MARA, V. The Effect of Long-Term Ageing on Microstructural Properties and Laves Phase Precipitation of Welded P91 and P92 Steels. In STEEL RESEARCH INTERNATIONAL. ISSN 1611-3683, FEB 2022, vol. 93, no. 2. Dostupné na: https://doi.org/10.1002/srin.202100311.
    BENDER, T. - KLENK, A. - WEIHE, S. Creep-fatigue assessment of martensitic welds based on numerically determined local deformation. In MATERIALS TESTING. ISSN 0025-5300, JUN 27 2023, vol. 65, no. 6, p. 815-823. Dostupné na: https://doi.org/10.1515/mt-2022-0397.
    CategoryADCA - Scientific papers in foreign journals registered in Current Contents Connect with IF (impacted)
    Category of document (from 2022)V3 - Vedecký výstup publikačnej činnosti z časopisu
    Type of documentčlánok
    Year2009
    Registered inWOS
    Registered inSCOPUS
    Registered inCCC
    DOI 10.1016/j.engfailanal.2009.02.004
    article

    article

    rokCCIFIF Q (best)JCR Av Jour IF PercSJRSJR Q (best)CiteScore
    A
    rok vydaniarok metrikyIFIF Q (best)SJRSJR Q (best)
    200920080.441Q30.591Q1
Number of the records: 1  

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