Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-05T06:38:48.378Z Has data issue: false hasContentIssue false
  • English
  • Français

Role of stress in the high cycle fatigue behavior of advanced 9Cr/CrMoV dissimilarly welded joint

Published online by Cambridge University Press:  11 January 2016

Chendong Shao ,
Fenggui Lu ,
Zhuguo Li ,
Yan Cai ,
Peng Wang  and
Yuming Ding
Chendong Shao
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 Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, People's Republic of China
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; and Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, People's Republic of China
Zhuguo Li*
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 Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, People's Republic of China
Yan Cai
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 Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, 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
Yuming Ding
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
*
a) Address all correspondence to these authors. e-mail: [email protected]
b) e-mail: [email protected]
Get access

Abstract

Narrow gap submerged arc welding method accompanied with multilayer and multipass technology was used to manufacture advanced 9Cr and CrMoV dissimilarly welded joint used as a newly developed turbine rotor. The aim of this investigation was to evaluate the high cycle fatigue (HCF) behavior of the welded joint at room temperature. Uniaxial-stress controlled HCF tests at stress ratio R = −1 were performed with specimens chipped from the welded joint of mockup and the S–N curve up to 1.0 × 108 cycle lifetime was obtained. It was found that the fracture location transferred from heat affected zone (HAZ) of CrMoV side to weld metal (WM) with decreasing stress amplitude. The microstructure of the welded joint was characterized and microstructure diversity was found to be responsible for the failure locations both in the CrMoV–HAZ and WM. Fracture morphology of failure samples were also investigated by a scanning electron microscope. It is detected that the stress amplitude required to drive the inclusion to be the crack initiation of the CrMoV–HAZ lies behind the transition. With decreasing stress amplitudes, void in the WM more easily tends to be the initiation of a fatigue crack than inclusion.

Keywords

high cycle fatiguedissimilarly welded jointfracture locationstress amplitudecrack initiation
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 2 , 28 January 2016 , pp. 292 - 301
Copyright
Copyright © Materials Research Society 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Jeongtea, K. and Byeongook, K.: Materials technology for PC-TPP in green economic era. Mater. Sci. Forum 654–656, 398 (2010).Google Scholar
Mayer, K.H. and Masuyama, F.: The development of creep-resistant steels. In Creep-Resistant Steels, Abe, F., Kern, T-U., and Viswanathan, R. eds.; Woodhead Publishing: Sawston, UK, 2008; p. 15.CrossRefGoogle Scholar
Nagesha, A., Valsan, M., Kannan, R., Rao, K.B.S., and Mannan, S.L.: Influence of temperature on the low cycle fatigue behaviour of a modified 9Cr–1Mo ferritic steel. Int. J. Fatigue 24(12), 1285 (2002).Google Scholar
Shankar, V., Valsan, M., Rao, K.B.S., Kannan, R., Mannan, S.L., and Pathak, S.D.: Low cycle fatigue behavior and microstructural evolution of modified 9Cr–1Mo ferritic steel. Mater. Sci. Eng., A 437(2), 413 (2006).Google Scholar
Le May, I., Furtado, H.C., and de Almeida, L.H.: Precipitation in 9Cr–1Mo steel after creep deformation. Mater. Charact. 58(1), 72 (2007).Google Scholar
Satyanarayana, V.V., Reddy, G.M., and Mohandas, T.: Dissimilar metal friction welding of austenitic-ferritic stainless steels. J. Mater. Process Technol. 160(2), 128 (2005).CrossRefGoogle Scholar
Naffakh, H., Shamanian, M., and Ashrafizadeh, F.: Dissimilar welding of AISI 310 austenitic stainless steel to nickel-based alloy Inconel 657. J. Mater. Process Technol. 209(7), 3628 (2009).Google Scholar
Kolhe, K.R. and Datta, C.: Prediction of microstructure and mechanical properties of multipass SAW. J. Mater. Process Technol. 197(1–3), 241 (2008).Google 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 (2014).Google 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 (2014).Google Scholar
Guo, Q., Lu, F., Liu, X., Yang, R., Cui, H., and Gao, Y.: Correlation of microstructure and fracture toughness of advanced 9Cr/CrMoV dissimilarly welded joint. Mater. Sci. Eng., A 638, 240 (2015).Google Scholar
Meng, D., Lu, F., Cui, H., Ding, Y., Tang, X., and Huo, X.: Investigation on creep behavior of welded joint of advanced 9% Cr steels. J. Mater. Res. 30(2), 197 (2015).Google Scholar
Lu, F., Liu, P., Ji, H., Ding, Y., Xu, X., and Gao, Y.: Dramatically enhanced impact toughness in welded 10%Cr rotor steel by high temperature post-weld heat treatment. Mater. Charact. 92, 149 (2014).Google Scholar
Liu, W., Liu, X., Lu, F., Tang, X., Cui, H., and Gao, Y.: Creep behavior and microstructure evaluation of welded joint in dissimilar modified 9Cr–1Mo steels. Mater. Sci. Eng., A 644, 337 (2015).Google Scholar
Lu, F., Liu, X., Wang, P., Wu, Q., Cui, H., and Huo, X.: Microstructural characterization and wide temperature range mechanical properties of NiCrMoV steel welded joint with heavy section. J. Mater. Res. 30(13), 2108 (2015).CrossRefGoogle Scholar
Ramkumar, K.D., Choudhary, A., Aggarwal, S., and Srivastava, A.: Characterization of microstructure and mechanical properties of continuous and pulsed current gas tungsten arc welded superaustenitic stainless steel. J. Mater. Res. 30(10), 1727 (2015).Google Scholar
Zhao, L., Jing, H., Xu, L., An, J., Xiao, G., Xu, D., Chen, Y., and Han, Y.: Investigation on mechanism of type IV cracking in P92 steel at 650 °C. J. Mater. Res. 26(7), 934 (2011).Google Scholar
Nah, J-W., Ren, F., Paik, K-W., and Tu, K.N.: Effect of electromigration on mechanical shear behavior of flip chip solder joints. J. Mater. Res. 21(03), 698 (2006).Google Scholar
Muthupandi, V., Bala Srinivasan, P., Seshadri, S.K., and Sundaresan, S.: Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds. Mater. Sci. Eng., A 358(1–2), 9 (2003).Google Scholar
Zhu, M-L., Liu, L-L., and Xuan, F-Z.: Effect of frequency on very high cycle fatigue behavior of a low strength Cr–Ni–Mo–V steel welded joint. Int. J. Fatigue 77, 166 (2015).Google 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(4–5), 1215 (2010).Google Scholar
Sugimoto, K., Kobayashi, M., and Yasuki, S.: Cyclic deformation behavior of a transformation-induced plasticity-aided dual-phase steel. Metall. Mater. Trans. A 28(12), 2637 (1997).Google Scholar
Wu, Q.J., Lu, F.G., Cui, H.C., Ding, Y.M., Liu, X., and Gao, Y.L.: Microstructure characteristics and temperature-dependent high cycle fatigue behavior of advanced 9% Cr/CrMoV dissimilarly welded joint. Mater. Sci. Eng., A 615, 98 (2014).Google Scholar
ASTM E466-07: Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials (ASTM International: Philadelphia, 2007).Google Scholar
Wu, Q., Lu, F., Cui, H., Liu, X., Wang, P., and Gao, Y.: Soft zone formation by carbon migration and its effect on the high-cycle fatigue in 9% Cr–CrMoV dissimilar welded joint. Mater. Lett. 141, 242 (2015).Google Scholar
Francis, J.A., Mazur, W., and Bhadeshia, H.K.D.H.: Type IV cracking in ferritic power plant steels. Mater. Sci. Technol. 22(12), 1387 (2006).Google Scholar
Murakami, Y., Yokoyama, N., and Nagata, J.: Mechanism of fatigue failure in ultralong life regime. Fatigue Fract. Eng. Mater. Struct. 25(8–9), 735 (2002).Google Scholar
Sakai, T.: Review and prospects for current studies on very high cycle fatigue of metallic materials for machine structural use. J. Solid Mech. Mater. Eng. 3(3), 425 (2009).Google Scholar
Shiozawa, K., Morii, Y., Nishino, S., and Lu, L.: Subsurface crack initiation and propagation mechanism in high-strength steel in a very high cycle fatigue regime. Int. J. Fatigue 28(11), 1521 (2006).Google Scholar
Grad, P., Reuscher, B., Brodyanski, A., Kopnarski, M., and Kerscher, E.: Mechanism of fatigue crack initiation and propagation in the very high cycle fatigue regime of high-strength steels. Scr. Mater. 67(10), 838 (2012).Google Scholar
Zhu, M-L., Xuan, F-Z., and Chen, J.: Influence of microstructure and microdefects on long-term fatigue behavior of a Cr–Mo–V steel. Mater. Sci. Eng., A 546, 90 (2012).Google Scholar