Abstract
The structure factor S(Q), intensities and pair distribution function g(r) of liquid Ni–Cr–W superalloy at different temperatures have been measured by a high-temperature X-ray diffractometer. Coordination N min, correlation radius r c, the nearest atomic distance r 1, solidification microstructure and compression performance have been studied. The results show that a pre-peak exists on the structure factor curve at the liquidus temperature, and a fine structure of equiaxed, globular and non-dendritic primary grains can be achieved by casting the alloy at liquidus temperature. Liquid structure feature of Ni–Cr–W superalloy is found to depend on temperature. During the solidification, some structural information carried by the medium-range order (MRO) structure is inherited from the melt to the microstructure, which is beneficial for grain refinement. The maximum yield strength measured from typical microstructure of the equiaxed and non-dendritic grains at 1400 °C is 543 MPa. The results show that refinement and non-dendritic grain is beneficial to the improvement of the yield strength.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
U. Dahlborg, M. Calvo-Dahlobrg, P.S. Popel, V.E. Sisorov, Eur. Phys. J. B 14, 639 (2000)
S.S. Nene, B.P. Kashyap, N. Prabhu, Y. Estrin, T. AlSamman, J. Alloys Compd. 615, 501 (2014)
K. Xia, G. Tausig, Mater. Sci. Eng., A 246, 1 (1998)
Y.Q. Wu, X.F. Bian, Q.G. Meng, Mater. Lett. 61, 2434 (2007)
Y.W. Bai, X.F. Bian, X.Q. Lv, S.P. Pan, J.Y. Qin, X.B. Qin, L.N. Hu, J. Appl. Phys. 112, 83524 (2012)
M. Couillard, S. Pratontep, R.E. Palmer, Appl. Phys. Lett. 82, 2595 (2003)
A. Stefan, F. Daan, Nature 409, 1020 (2001)
M.Y. Xie, X.F. Li, G.B. Xu, Y.T. Zhou, F.Q. Zu, Appl. Phys. A 113, 431 (2013)
W.Z. Jin, F.D. Bai, T.J. Li, G.M. Yin, Mater. Lett. 62, 1585 (2008)
U. Gasser, E.R. Weeks, A. Schofield, P.N. Pusey, D.A. Weitz, Science 292, 258 (2001)
P. Srirangam, M.J. Kramer, S. Shankar, Acta Mater. 59, 503 (2011)
K. Yamanka, M. Mori, A. Chiba, Mater. Lett. 116, 82 (2014)
L. Zheng, R. Chellali, R. Schlesiger, D. Baither, G. Schmitz, Scripta Mater. 65, 428 (2011)
L. Zheng, R. Chellali, R. Schlesiger, Y. Meng, D. Baither, G. Schmitz, Scripta Mater. 68, 825 (2013)
Y. Liu, R. Hu, J.S. Li, H.C. Kou, H. Chang, H.Z. Fu, Mater. Sci. Eng., A 508, 141 (2009)
J.Y. Kang, S.H. Zhu, E. Wei, E. Schwegler, Y.H. Kim, Phys. Rev. Lett. 108, 115901 (2012)
C.J. Cui, J. Zhang, K. Wu, Y.P. Ma, L. Liu, H.Z. Fu, Phys. B 407, 3566 (2012)
W.W. Mullins, R.F. Sekerka, J. Appl. Phys. 35, 444 (1964)
J. Krogh-Moe, Acta Crystallogr. Sect. C: Cryst. Struct. Commun. 9, 951 (1956)
N. Norman, Acta Crystallogr. Sect. C: Cryst. Struct. Commun. 10, 370 (1957)
D.T. Cromer, J.B. Mann, J. Chem. Phys. 47, 1892 (1967)
O.S. Roik, O.V. Samsonnikov, V.P. Kazimirov, V.E. Sokolskii, J. Mol. Liq. 151, 42 (2010)
Y.J. Ustinovshikov, J. Alloys Compd. 543, 227 (2012)
Y. Kita, J.B. Van Zytveld, Z. Morita, T. Iida, J. Phys.: Condens. Matter 6, 811 (1994)
L. Bolzoni, M. Nowak, N. Hari Babu, J. Alloys Compd. 623, 79 (2015)
L.S. Wang, J. Shen, L. Wang, Y.J. Du, H.Z. Fu, Appl. Phys. A 114, 769 (2014)
Acknowledgments
This work was supported by National Basic Research Program of China (No. 2011CB610404), National Science and Technology Major Project (No. 2009ZX04006) and the Program of Introducing Talents of Discipline to Universities (No. B08040). The authors are grateful to Dr. Xiufang Bian of Shandong University for assistance in building the experimental facility.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gao, Z., Hu, R., Wang, J. et al. Heredity of medium-range order structure from melts to the microstructure of Ni–Cr–W superalloy. Appl. Phys. A 120, 183–188 (2015). https://doi.org/10.1007/s00339-015-9148-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00339-015-9148-6