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Gamma prime stability and its influence on tensile behavior of a wrought superalloy with different Fe contents

Published online by Cambridge University Press:  12 April 2016

Chang Shuai Wang ,
Yong An Guo ,
Jian Ting Guo  and
Lan Zhang Zhou
Chang Shuai Wang*
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Yong An Guo
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Jian Ting Guo
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Lan Zhang Zhou*
Affiliation:
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
*
b)e-mail: [email protected]
a)Address all correspondence to these authors. e-mail: [email protected]
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Abstract

Gamma prime (γ′) stability and its influence on tensile behavior of a newly developed wrought superalloy with various Fe contents was studied both experimentally and thermodynamically. The results show that the γ′-solvus temperature is higher and γ–γ′ lattice mismatch is bigger in the alloy with the lower Fe content. During long-term thermal exposure at 650–750 °C, the coarsening behavior of γ′ precipitates follows Ostwald ripening kinetics and the lower Fe content can decrease the coarsening rate of γ′ precipitates due to the increase of the activation energy for γ′ coarsening. Moreover, the lower Fe content can retard the transformation from γ′ to η phase. The tensile properties of the alloys with different Fe contents are almost same after standard heat treatment. However, after thermal exposure, the decrease of tensile strength in the alloy with lower Fe content is less than that of the alloys with higher Fe content due to the improvement of γ′ stability.

Keywords

wrought superalloyγ′ coarseningtransformation from γ′ to ηtensile behaviorFe content700 °C A-USC
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 9 , 14 May 2016 , pp. 1361 - 1371
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Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Jørgen, B., Sven, K., and Blum, R.: High-efficiency coal-fired power plants development and perspectives. Energy 31, 1439 (2006).Google Scholar
Viswanathan, R. and Bakker, W.: U.S. program on materials technology for ultra-supercritical coal power plants. J. Mater. Eng. Perform. 10, 81 (2006).Google Scholar
Oh, J.H., Yoo, B.G., Choi, I.C., Santella, M.L., and Jang, J.I.: Influence of thermo-mechanical treatment on the precipitation strengthening behavior of Inconel 740, a Ni-based superalloy. J. Mater. Res. 26, 1253 (2011).Google Scholar
Shingledecker, J.P., Evans, N.D., and Pharr, G.M.: Influences of composition and grain size on creep-rupture behavior of Inconel alloy 740. Mater. Sci. Eng., A 578, 277 (2013).Google Scholar
Kim, I.S., Choi, B.G., Hong, H.U., Do, J., and Jo, C.Y.: Influence of thermal exposure on the microstructural evolution and mechanical properties of a wrought Ni-base superalloy. Mater. Sci. Eng., A 593, 55 (2014).Google Scholar
Yang, Y., Thomson, R.C., Leese, R.M., and Roberts, S.: Microstructural evolution in cast Haynes 282 for application in advanced power plants (EPRI, Waikoloa, 2013); p. 143.Google Scholar
Wang, C.S., Guo, Y.A., Guo, J.T., and Zhou, L.Z.: Microstructural stability and mechanical properties of a boron modified Ni–Fe based superalloy for steam boiler applications. Mater. Sci. Eng., A 639, 380 (2015).Google Scholar
Zhong, Z.H., Gu, Y.F., Yuan, Y., and Shi, Z.: A new wrought Ni–Fe-base superalloy for advanced ultra-supercritical power plant applications beyond 700 °C. Mater. Lett. 109, 343 (2013).CrossRefGoogle Scholar
Wang, C.S., Zhao, H.Q., Guo, Y.A., Guo, J.T., and Zhou, L.Z.: Structural stability and mechanical properties of phosphorus modified Ni–Fe based superalloy GH984. Mater. Res. Innovations 18(S4), 324 (2014).Google Scholar
Raynor, D. and Silcock, J.M.: Strengthening mechanisms in γ′ precipitating alloys. Met. Sci. J. 4, 121 (1970).CrossRefGoogle Scholar
Yu, Z.H., Qiang, J., Zhang, J., and Liu, L.: Microstructure evolution during heat treatment of superalloys loaded with different amounts of carbon. J. Mater. Res. 30, 2064 (2015).CrossRefGoogle Scholar
Kozar, R.W., Suzuki, A., Milligan, W.W., Schirra, J.J., Savage, M.F., and Pollock, T.M.: Strengthening mechanisms in polycrystalline multimodal nickel-based superalloys. Metall. Mater. Trans. A 40, 1588 (2009).Google Scholar
Fu, B.D., Du, K., Han, G.M., Cui, C.Y., and Zhang, J.X.: Deformation mechanisms in a Co-rich nickel based superalloy with different size of γ′ precipitates. Mater. Lett. 152, 272 (2015).CrossRefGoogle Scholar
Koul, A.K. and Castillo, R.: Assessment of service induced microstructural damage and its rejuvenation in turbine blades. Metall. Trans. A 19, 2049 (1988).Google Scholar
Kusabiraki, K., Takasawa, Y., and Ooka, T.: Precipitation and growth of γ′ and η phases in 53Fe–26Ni–15Cr Alloy. ISIJ Int. 35, 542 (1995).Google Scholar
Qin, X.Z., Guo, J.T., Yuan, C., Hou, J.S., Zhou, L.Z., and Ye, H.Q.: Long-term thermal exposure responses of the microstructure and properties of a cast Ni-base superalloy. Mater. Sci. Eng., A 543, 121 (2012).Google Scholar
Wang, C.S., Wang, T.T., Tan, M.L., Guo, Y.A., Guo, J.T., and Zhou, L.Z.: Thermal stability of a new Ni–Fe–Cr base alloy with different Ti/Al ratios. J. Mater. Sci. Technol. 31, 135 (2015).CrossRefGoogle Scholar
Wu, Q., Song, H., Swindeman, R.W., Shingledecker, J.P., and Vasudevan, V.K.: Microstructure of long-term aged IN617 Ni-base superalloy. Metall. Mater. Trans. A 39, 2569 (2008).Google Scholar
Suave, L.M., Cormier, J., Bertheau, D., Villechaise, P., Soula, A., Hervier, Z., and Hamon, F.: High temperature low cycle fatigue properties of alloy 625. Mater. Sci. Eng., A 650, 161 (2016).Google Scholar
Yuan, X.F., Song, J.X., Zheng, Y.R., Huang, Q., Yagi, K., Xiao, C.B., and Feng, Q.: Quantitative microstructural evolution and corresponding stress rupture property of K465 alloy. Mater. Sci. Eng., A 651, 734 (2016).Google Scholar
Wang, T.T., Wang, C.S., Sun, W., Qin, X.Z., Guo, J.T., and Zhou, L.Z.: Microstructure evolution and mechanical properties of GH984G alloy with different Ti/Al ratios during long-term thermal exposure. Mater. Des. 62, 225 (2014).Google Scholar
Guo, J.T.: Materials Science and Engineering for Superalloys (Science Publications, Beijing, 2008); p. 89.Google Scholar
Grosdidier, T., Hazotte, A., and Simon, A.: Precipitation and dissolution processes in γ/γ′ single crystal nickel-based superalloys. Mater. Sci. Eng., A 256, 183 (1998).CrossRefGoogle Scholar
Lifshitz, I.M. and Slyozov, V.V.: The kinetics of precipitation from supersaturated solid solutions. J. Phys. Chem. Solids 19, 35 (1961).Google Scholar
Wagner, C.Z.: Theorie der alterung von niederschlagen durchumlosen, Zeitschrift Zeitschr. Elektrochemie 655, 81 (1961).Google Scholar
Zhong, Z.H., Gu, Y.F., and Yuan, Y.: Microstructural stability and mechanical properties of a newly developed Ni–Fe-base superalloy. Mater. Sci. Eng., A 622, 101 (2015).Google Scholar
Zhao, S.Q., Xie, X.S., Smith, G.D., and Patel, S.J.: Gamma prime coarsening and age-hardening behaviors in a new nickel base superalloy. Mater. Lett. 58, 1784 (2004).Google Scholar
Tan, M.L., Wang, C.S., Guo, Y.A., Guo, J.T., and Zhou, L.Z.: Influence of Ti/Al ratios on γ′ coarsening behavior and tensile properties of GH984G alloy during long-term thermal exposure. Acta Metal. Sin. 50, 1260 (2014).Google Scholar
Jackson, M.P. and Reed, R.C.: Heat treatment of UDIMET 720Li the effect of microstructure on properties. Mater. Sci. Eng., A 259, 85 (1999).Google Scholar
Oh, J.H., Choi, I.C., Kim, Y.J., Yoo, B.G., and Jang, J.I.: Variations in overall- and phase-hardness of a new Ni-based superalloy during isothermal aging. Mater. Sci. Eng., A 528, 6121 (2011).Google Scholar
Balikci, E., Mirshams, R.A., and Raman, A.: Fracture behavior of superalloy IN738LC with various precipitate microstructures. Mater. Sci. Eng. A 265, 50 (1999).Google Scholar