Two types of basal stacking faults within {101¯2} twin in deformed magnesium alloy

作者: Qi Sun , Xiyan Zhang , Yang Shu , Li Tan , Qing Liu

DOI: 10.1016/J.MATLET.2016.09.019

关键词:

摘要: Abstract Deformation twinning is one of the most important strain accommodation mechanisms for deformed hexagonal materials. The stacking faults inside twin may act as obstacles to hinder subsequent motion dislocations and accordingly influence mechanical properties In present work, two types basal within { 10 1 ¯ 2 } deformation in a magnesium alloy have been studied by high-resolution transmission electron microscopy. It has found that ends are usually bounded incoherent boundaries. According this experimental feature, possible formation such will be discussed.

参考文章(16)
N. Chetty, M. Weinert, Stacking faults in magnesium Physical Review B. ,vol. 56, pp. 10844- 10851 ,(1997) , 10.1103/PHYSREVB.56.10844
D. I. Tomsett, M. Bevis, The incorporation of basal slip dislocations in {1012} twins in zinc crystals Philosophical Magazine. ,vol. 19, pp. 129- 140 ,(1969) , 10.1080/14786436908217768
B. Li, E. Ma, Pyramidal slip in magnesium: Dislocations and stacking fault on the {1011} plane Philosophical Magazine. ,vol. 89, pp. 1223- 1235 ,(2009) , 10.1080/14786430902936707
S.R. Agnew, L. Capolungo, C.A. Calhoun, Connections between the basal I1 “growth” fault and 〈c+a〉 dislocations Acta Materialia. ,vol. 82, pp. 255- 265 ,(2015) , 10.1016/J.ACTAMAT.2014.07.056
N. Li, J. Wang, A. Misra, X. Zhang, J.Y. Huang, J.P. Hirth, Twinning dislocation multiplication at a coherent twin boundary Acta Materialia. ,vol. 59, pp. 5989- 5996 ,(2011) , 10.1016/J.ACTAMAT.2011.06.007
X.Y. Zhang, B. Li, Q. Liu, Non-equilibrium basal stacking faults in hexagonal close-packed metals Acta Materialia. ,vol. 90, pp. 140- 150 ,(2015) , 10.1016/J.ACTAMAT.2015.02.036
X. Wu, Y.T. Zhu, M.W. Chen, E. Ma, Twinning and stacking fault formation during tensile deformation of nanocrystalline Ni Scripta Materialia. ,vol. 54, pp. 1685- 1690 ,(2006) , 10.1016/J.SCRIPTAMAT.2005.12.045
WW Jian, GM Cheng, WZ Xu, CC Koch, QD Wang, YT Zhu, SN Mathaudhu, None, Physics and model of strengthening by parallel stacking faults Applied Physics Letters. ,vol. 103, pp. 133108- ,(2013) , 10.1063/1.4822323