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Microstructural characterization and wide temperature range mechanical properties of NiCrMoV steel welded joint with heavy section

Published online by Cambridge University Press:  08 June 2015

Fenggui Lu ,
Xia Liu ,
Peng Wang ,
Qingjun Wu ,
Haichao Cui  and
Xin Huo
Fenggui Lu*
Affiliation:
Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Xia Liu
Affiliation:
Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co. Ltd., Shanghai 200240, People's Republic of China; and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
Peng Wang
Affiliation:
Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China; and Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co. Ltd., Shanghai 200240, People's Republic of China
Qingjun Wu
Affiliation:
Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Haichao Cui
Affiliation:
Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
Xin Huo
Affiliation:
Shanghai Turbine Plant of Shanghai Electric Power Generation Equipment Co. Ltd., Shanghai 200240, People's Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

NiCrMoV steels used in nuclear rotor with heavy section were successfully fabricated by ultra-narrow gap submerged arc welding method. In this study, the mechanical properties including the tensile and impact toughness of the welded joints (WJs) with a wide temperature range were systematically investigated. Microstructural characterization indicated that the high-temperature tempered martensite and tempered bainite, as the main microstructure in WJ, were responsible for the improved comprehensive mechanical properties of the WJ. Microhardness across the WJ was measured as well, showing that the highest value of hardness occurred at the heat-affected zone which represents the appropriate lowest impact toughness of WJ. However, compared with the base metal, the ultimate tensile strength of the WJ displayed approximately equivalent values, while the yield strength was increased with increasing temperature. All the fracture of the WJ specimens occurred on the weld metal. In addition, the Charpy impact energy of weld metal was obtained at various temperatures, and the transition temperature (Tt) of welded metal was determined as 5 °C, which helps for the application design. The fractography indicated that the ductile fracture modes changed to quasi-cleavage ones gradually with decreasing temperature, and also the dimples became smaller and shallower.

Keywords

welded jointmicrostructure characterizationmechanical propertiestemperature characteristic
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 13 , 14 July 2015 , pp. 2108 - 2116
Copyright
Copyright © Materials Research Society 2015 

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References

REFERENCES

Staniša, B., Schauperl, Z., and Grilec, K.: Erosion behaviour of turbine rotor blades installed in the Krsko nuclear power plant. Wear 254, 7 (2003).CrossRefGoogle Scholar
Tan, L., Zhang, J., Zhuang, D., and Liu, C.: Influences of lumped passes on welding residual stress of a thick-walled nuclear rotor steel pipe by multipass narrow gap welding. Nucl. Eng. Des. 273, 47–57 (2014).CrossRefGoogle Scholar
Tan, L., Zhang, L., Zhang, J., and Zhuang, D.: Effect of geometric construction on residual stress distribution in designing a nuclear rotor joined by multipass narrow gap welding. Fusion Eng. Des. 89, 4 (2014).CrossRefGoogle Scholar
Liu, P., Lu, F., Liu, X., Ji, H., and Gao, Y.: Study on fatigue property and microstructure characteristics of welded nuclear power rotor with heavy section. J. Alloys Compd. 584, 430–437 (2014).CrossRefGoogle Scholar
Zhu, M.L., Wang, D.Q., and Xuan, F.Z.: Effect of long-term aging on microstructure and local behavior in the heat-affected zone of a Ni–Cr–Mo–V steel welded joint. Mater. Charact. 87, 45–61 (2014).CrossRefGoogle Scholar
Farabi, N., Chen, D.L., and Zhou, Y.: Microstructure and mechanical properties of laser welded dissimilar DP600/DP980 dual-phase steel joints. J. Alloys Compd. 509, 982–989 (2011).CrossRefGoogle Scholar
Khan, M.M.A., Romoli, L., Fiaschi, M., Dini, G., and Sarri, F.: Laser beam welding of dissimilar stainless steels in a fillet joint configuration. J. Mater. Process. Technol. 212, 4 (2012).CrossRefGoogle Scholar
Hajiannia, I., Shamanian, M., and Kasiri, M.: Microstructure and mechanical properties of AISI 347 stainless steel/A335 low alloy steel dissimilar joint produced by gas tungsten arc welding. Mater. Des. 50, 566–573 (2013).CrossRefGoogle Scholar
Zhu, M.L. and Xuan, F.Z.: Correlation between microstructure, hardness and strength in HAZ of dissimilar welds of rotor steels. Mater. Sci. Eng., A 527, 16 (2010).CrossRefGoogle Scholar
Arivazhagan, N., Singh, S., Prakash, S., and Reddy, G.M.: Investigation on AISI 304 austenitic stainless steel to AISI 4140 low alloy steel dissimilar joints by gas tungsten arc, electron beam and friction welding. Mater. Des. 32, 83–91 (2011).CrossRefGoogle Scholar
Saeid, T., Abdollah-zadeh, A., Assadi, H., and Malek Ghaini, F.: Effect of friction stir welding speed on the microstructure and mechanical properties of a duplex stainless steel. Mater. Sci. Eng., A 496, 1 (2008).CrossRefGoogle Scholar
Bhamji, I., Preuss, M., Threadgill, P.L., Moat, R.J., Addison, A.C., and Peel, M.J.: Linear friction welding of AISI 316L stainless steel. Mater. Sci. Eng., A 528, 2 (2010).CrossRefGoogle Scholar
Chung, Y.D., Fujii, H., Ueji, R., and Tsuji, N.: Friction stir welding of high carbon steel with excellent toughness and ductility. Scr. Mater. 63, 2 (2010).CrossRefGoogle Scholar
Jeon, J., Mironov, S., Sato, Y.S., Kokawa, H., Park, S.H.C., and Hirano, S.: Friction stir spot welding of single-crystal austenitic stainless steel. Acta Mater. 59, 20 (2011).CrossRefGoogle Scholar
Hokamoto, K., Nakata, K., Mori, A., Tsuda, S., Tsumura, T., and Inoue, A.: Dissimilar material welding of rapidly solidified foil and stainless steel plate using underwater explosive welding technique. J. Alloys Compd. 472, 507–511 (2009).CrossRefGoogle Scholar
Das, C.R., Bhaduri, A.K., Srinivasan, G., Shankar, V., and Mathew, S.: Selection of filler wire and effect of auto tempering on the mechanical properties of dissimilar metal joint between 403 and 304L(N) stainless steels. J. Mater. Process. Technol. 209, 3 (2009).CrossRefGoogle Scholar
Torkamany, M.J., Tahamtan, S., and Sabbaghzadeh, J.: Dissimilar welding of carbon steel to 5754 aluminum alloy by Nd:YAG pulsed laser. Mater. Des. 31, 458–465 (2010).CrossRefGoogle Scholar
Malekghaini, F., Hamedi, M., Torkamany, M., and Sabbaghzadeh, J.: Weld metal microstructural characteristics in pulsed Nd:YAG laser welding. Scr. Mater. 56, 11 (2007).CrossRefGoogle Scholar
Mishra, S., Lienert, T.J., Johnson, M.Q., and DebRoy, T.: An experimental and theoretical study of gas tungsten arc welding of stainless steel plates with different sulfur concentrations. Acta Mater. 56, 9 (2008).CrossRefGoogle Scholar
Beidokhti, B., Kokabi, A.H., and Dolati, A.: A comprehensive study on the microstructure of high strength low alloy pipeline welds. J. Alloys Compd. 597, 142–147 (2014).CrossRefGoogle Scholar
Arivazhagan, B., Sundaresan, S., and Kamaraj, M.: A study on influence of shielding gas composition on toughness of flux-cored arc weld of modified 9Cr–1Mo (P91) steel. J. Mater. Process. Technol. 209, 12 (2009).CrossRefGoogle Scholar
Villaret, V., Deschaux-Beaume, F., Bordreuil, C., Fras, G., Chovet, C., Petit, B., and Faivre, L.: Characterization of gas metal arc welding welds obtained with new high Cr–Mo ferritic stainless steel filler wires. Mater. Des. 51, 474–483 (2013).CrossRefGoogle Scholar
Villaret, V., Deschaux-Beaume, F., Bordreuil, C., Rouquette, S., and Chovet, C.: Influence of filler wire composition on weld microstructures of a 444 ferritic stainless steel grade. J. Mater. Process. Technol. 213, 9 (2013).CrossRefGoogle Scholar
Mark, A.F., Francis, J.A., Dai, H., Turski, M., Hurrell, P.R., Bate, S.K., Kornmeier, J.R., and Withers, P.J.: On the evolution of local material properties and residual stress in a three-pass SA508 steel weld. Acta Mater. 60, 8 (2012).CrossRefGoogle Scholar
Ramakrishnan, M. and Muthupandi, V.: Application of submerged arc welding technology with cold wire addition for drum shell long seam butt welds of pressure vessel components. Int. J. Adv. Manuf. Technol. 65, 5–8 (2012).Google Scholar
Taban, E., Deleu, E., Dhooge, A., and Kaluc, E.: Submerged arc welding of thick ferritic martensitic 12Cr stainless steel with a variety of consumables. Sci. Technol. Weld. Joining 13, 4 (2008).CrossRefGoogle Scholar
Gunaraj, V. and Murugan, N.: Prediction of heat-affected zone characteristics in submerged arc welding of structural steel pipes. Weld. J. 81, 3 (2002).Google Scholar
McPherson, N.A., Baker, T.N., Li, Y., and Hoffmann, J.: High dilution submerged arc welding of Cr-Ni-Mo austenitic stainless steel. Sci. Technol. Weld. Joining 5, 1 (2000).CrossRefGoogle Scholar
Vannod, J., Bornert, M., Bidaux, J.E., Bataillard, L., Karimi, A., Drezet, J.M., Rappaz, M., and Hessler-Wyser, A.: Mechanical and microstructural integrity of nickel–titanium and stainless steel laser joined wires. Acta Mater. 59, 17 (2011).CrossRefGoogle Scholar
Avazkonandeh-Gharavol, M.H., Haddad-Sabzevar, M., and Haerian, A.: Effect of chromium content on the microstructure and mechanical properties of multipass MMA, low alloy steel weld metal. J. Mater. Sci. 44, 1 (2008).Google Scholar
Kang, D.H. and Lee, H.W.: Effect of different chromium additions on the microstructure and mechanical properties of multipass weld joint of duplex stainless steel. Metall. Mater. Trans. A 43, 12 (2012).CrossRefGoogle Scholar
Shekhter, A., Kim, S., Carr, D.G., Croker, A.B.L., and Ringer, S.P.: Assessment of temper embrittlement in an ex-service 1Cr-1Mo-0.25V power generating rotor by Charpy V-Notch testing, KIc fracture toughness and small punch test. Int. J. Pressure Vessels Piping 79, 8–10 (2002).CrossRefGoogle Scholar
Zhu, M.L. and Xuan, F.Z.: Effects of temperature on tensile and impact behavior of dissimilar welds of rotor steels. Mater. Des. 31, 3346–3352 (2010).CrossRefGoogle Scholar
Wu, Q., Lu, F., Cui, H., Liu, X., Wang, P., and Tang, X.: Role of butter layer in low-cycle fatigue behavior of modified 9Cr and CrMoV dissimilar rotor welded joint. Mater. Des. 59, 165–175 (2014).CrossRefGoogle Scholar
Wu, Q., Lu, F., Cui, H., Ding, Y., liu, X., and Gao, Y.: Microstructure characteristics and temperature-dependent high cycle fatigue behavior of advanced 9% Cr/CrMoV dissimilarly welded joint. Mater. Sci. Eng., A 615, 98–106 (2014).CrossRefGoogle Scholar
Qi, Y., Luo, H., Zheng, S., Chen, C., Lv, Z., and Xiong, M.: Comparison of tensile and impact behavior of carbon steel in H2S environments. Mater. Des. 58, 234–241 (2014).CrossRefGoogle Scholar
Farabi, N., Chen, D.L., Li, J., Zhou, Y., and Dong, S.J.: Microstructure and mechanical properties of laser welded DP600 steel joints. Mater. Sci. Eng., A 527, 1215–1222 (2010).CrossRefGoogle Scholar
Xu, W., Westerbaan, D., Nayak, S.S., Chen, D.L., Goodwin, F., Biro, E., and Zhou, Y.: Microstructure and fatigue performance of single and multiple linear fiber laser welded DP980 dual-phase steel. Mater. Sci. Eng., A 553, 51–58 (2012).CrossRefGoogle Scholar
Fattahi, M., Nabhani, N., Vaezi, M.R., and Rahimi, E.: Improvement of impact toughness of AWS E6010 weld metal by adding TiO2 nanoparticles to the electrode coating. Mater. Sci. Eng., A 528, 8031–8039 (2011).CrossRefGoogle Scholar
Hu, J., Du, L.X., Wang, J.J., Xie, H., Gao, C.R., and Misra, R.D.K.: High toughness in the intercritically reheated coarse-grained (ICRCG) heat-affected zone (HAZ) of low carbon microalloyed steel. Mater. Sci. Eng., A 590, 323–328 (2014).CrossRefGoogle Scholar
Hu, J., Du, L.X., Wang, J.J., and Gao, C.R.: Effect of welding heat input on microstructures and toughness in simulated CGHAZ of V-N high strength steel. Mater. Sci. Eng., A 577, 161–168 (2013).CrossRefGoogle Scholar