Abstract
The microstructure evolution and dynamic precipitation behavior of Mg–10Gd–4Y–1Sm–0.5Zr alloy during backward hot extrusion are studied. The results show that the equiaxed grains become polygonal grains and fine DRX grains are generated which form a “necklace structure” along the initial deformed grain boundaries. With further increase of deformation, DRX grains volume fraction significantly increases and finally almost fully DRX extruded microstructure is obtained in the completely hot-extruded sample. The extrusion deformation results in increase of dislocation density and formation of dislocation cells. The subgrain boundaries continue to absorb dislocations and finally change from the low angle grain boundaries to the high angle grain boundaries. Hot extrusion deformation results in formation of dynamic precipitated phase, β phase particle, i.e., Mg5(Gd,Y) phase, with diameter of 45–145 nm, which is incoherent relationship with the matrix. In process of increasing deformation, the shape of β phase changes from spindle shape to disc shape and the distribution of β phase transforms from strip distribution along grain boundary to discrete distribution.
Graphic Abstract
Similar content being viewed by others
References
Y.H. Ali, D. Qiu, B. Jiang, F.S. Pan, M.X. Zhang, J. Alloy. Compd. 619, 639 (2015)
X.H. Tan, W. Chee, J. Chan, R. Kwok, M. Gupta, Met. Mater. Int. 23, 699 (2017)
X.Y. Chen, Q.A. Li, J. Chen, L.M. Zhu, J. Rare Earths 37, 1351 (2019)
B. Chen, Ch Lu, D.L. Lin, X.Q. Zeng, Met. Mater. Int. 20, 285 (2014)
N.Y. Liu, Z.H.Y. Zhang, L.M. Peng, W.J. Ding, Mater. Sci. Eng. A 627, 223 (2015)
X.Y. Xia, W.H. Sun, A.A. Luo, D.S. Stone, Acta Mater. 11, 335 (2016)
X.P. Luo, D.Q. Fang, Q.S.H. Li, Y.S.H. Chai, J. Rare Earths 34, 1134 (2016)
Y. Chen, Z. Xu, C. Smith, J. Sankar, Acta Biomater. 10, 4561 (2014)
Y.S.H. Chai, Z.H.G. Gao, K.L. Cai, D.Q. Fang, Rare Met. Mater. Eng. 45, 287 (2016)
J. Zheng, Q. Wang, Z. Jin, T. Peng, Mater. Sci. Eng. A 527, 1677 (2010)
C. Xu, M.Y. Zheng, S.W. Xu, K. Wu, E.D. Wang, S. Kamado, G.J. Wang, Mater. Sci. Eng. A 559, 844 (2013)
X.M. Zhang, L. Li, Y.L. Deng, N. Zhou, J. Alloy. Compd. 481, 296 (2013)
J.F. Nie, Metall. Mater. Trans. A 43, 3891 (2012)
S.V. Dobatkin, L.L. Rokhlin, E.A. Lukyanova, M.Y. Murashkin, T.V. Dobatkina, N.Y. Tabachkova, Mater. Sci. Eng. A 667, 217 (2016)
L. Jun, Y. Hong, C.R. Shi, Mater. Sci. Eng. A 614, 88 (2014)
J.P. Li, Z. Yang, T. Liu, Scripta Mater. 56, 137 (2007)
M. Hong, S.S.A. Shah, D. Wu, R.S. Chen, X.H. Du, N.T. Hu, Y.F. Zhang, Met. Mater. Int. 22, 1091 (2016)
S.M. He, X.Q. Zeng, L.M. Peng, X. Gao, J.F. Nie, W.J. Ding, J. Alloy. Compd. 427, 316 (2007)
Y.P. Wu, H.Q. Xiong, Y.Z.H. Jia, S.H. Xie, G.F. Li, Trans. Nonferrous Met. Soc. China 29, 976 (2019)
D.X. Zhang, Z. Tan, Q.H. Huo, Z.Y. Xiao, Z.W. Fang, X.Y. Yang, Mater. Sci. Eng. A 715, 389 (2018)
Y.P. Wu, X.M. Zhang, Y.L. Deng, C.H.P. Tang, L. Yang, Y.Y. Zhong, Trans. Nonferrous Met. Soc. China 25, 1831 (2015)
H. Zhou, W.Z. Xu, W.W. Jian, G.M. Cheng, X.L. Ma, W. Guo, S.N. Mathaudhu, Q.D. Wang, Y.T. Zhu, Philos. Mag. 94, 2403 (2014)
E. Nes, Acta Mater. 43, 2189 (1995)
Y. Deng, Z.M. Yin, J.W. Huang, Mater. Sci. Eng. A 528, 1780 (2011)
A. Galiyev, R. Kaibyshev, G. Gottestein, Acta Mater. 49, 1199 (2001)
L. Gao, S.M. Liang, R.S. Chen, E.H. Han, Trans. Nonferrous Met. Soc. China 20, 1585 (2010)
WSh Liu, D.L. Liu, YZh Ma, J. Wang, B.P. Yang, Trans. Nonferrous Met. Soc. China 25, 308 (2015)
C.Y. Nam, J.H. Han, Y.H. Chung, M.C. Shin, Mater. Sci. Eng. A 347, 253 (2003)
K. R. Cardoso, D. N. Travessa, W. J. Botta, A. M. Jorge Jr., Mater. Sci. Eng., A528, 5804 (2011)
W. Guo, Q. Wang, B. Ye, H. Zhou, J. Alloy. Compd. 558, 164 (2013)
S.K. Das, Y.B. Kang, T.K. Ha, I.H. Jung, Acta Mater. 71, 164 (2014)
W. Xu, D.P. Edwards, X. Wu, M. Stoica, M. Calin, U. Kühn, J. Eckert, K. Xia, Scr. Mater. 68, 67 (2013)
K. Mathis, J. Gubicza, N.H. Nam, J. Alloy. Compd. 394, 194 (2005)
S.M. He, X.Q. Zeng, L.M. Peng, X. Gao, J.F. Nie, W.J. Ding, J. Alloy. Compd. 421, 309 (2006)
X. Gao, S.M. He, X.Q. Zeng, L.M. Peng, W.J. Ding, J.F. Nie, Mater. Sci. Eng. A 431, 322 (2006)
J.F. Nie, B.C. Muddle, Acta Mater. 48, 1691 (2000)
T.T. Sasaki, K. Oh-ishi, T. Ohkubo, K. Hono, Scr. Mater. 55, 251 (2006)
J.B. Clark, Acta Mater. 16, 141 (1968)
L.L. Rokhlin, N.I. Nitikina, T.V. Dobatkina, J. Alloy. Compd. 239, 209 (1996)
G. Sha, Y.B. Wang, X.Z. Liao, Z.C. Duan, S.P. Ringer, T.G. Langdon, Acta Mater. 57, 3123 (2009)
Acknowledgements
This work is supported by National Natural Science Foundation of China through Projects No. 51571084 and No. 51171059).
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Yan, L.P., Li, Q.A. & Chen, X.Y. Microstructure Evolution and Dynamic Precipitation Behavior of Mg–10Gd–4Y–1Sm–0.5Zr Alloy During Backward Hot Extrusion. Met. Mater. Int. 27, 3522–3528 (2021). https://doi.org/10.1007/s12540-020-00661-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12540-020-00661-5