Hierarchical nanostructure of CrCoNi film underlying its remarkable mechanical strength
作者： Yujie Chen , Zhifeng Zhou , Paul Munroe , Zonghan Xie
DOI: 10.1063/1.5042148
关键词:
摘要: A CrCoNi medium entropy alloy thin film is fabricated using magnetron sputtering. It exhibits a unique hierarchical nanostructure, featuring (1) high density of planar defects (mostly stacking faults plus small number twin boundaries), (2) dual-phase configuration (a mix face-centred-cubic and hexagonal-close-packed), (3) vertically aligned, textured nanocolumns, each with width ∼100 nm. The nanostructure in this study original, especially for its dual phase combination, since the bulk generally presents single structure. shows hardness quadruple that structured counterpart. formation role producing such mechanical strength are discussed.A discussed.
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sci-hub.se 参考文章(30)
Warren J. MoberlyChan, J. J. Cao, C. J. Gilbert, R. O. Ritchie, L. C. De Jonghe, The Cubic — To — Hexagonal Transformation to Toughen Sic Springer, Boston, MA. pp. 177- 190 ,(1998) , 10.1007/978-1-4615-5393-9_15
B. Gludovatz, A. Hohenwarter, D. Catoor, E. H. Chang, E. P. George, R. O. Ritchie, A fracture-resistant high-entropy alloy for cryogenic applications Science. ,vol. 345, pp. 1153- 1158 ,(2014) , 10.1126/SCIENCE.1254581
K. Lu, L. Lu, S. Suresh, Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale Science. ,vol. 324, pp. 349- 352 ,(2009) , 10.1126/SCIENCE.1159610
WW Jian, GM Cheng, WZ Xu, H Yuan, MH Tsai, QD Wang, CC Koch, YT Zhu, SN Mathaudhu, None, Ultrastrong Mg Alloy via Nano-spaced Stacking Faults Materials research letters. ,vol. 1, pp. 61- 66 ,(2013) , 10.1080/21663831.2013.765927
K Han, J.P Hirth, J.D Embury, Modeling the formation of twins and stacking faults in the Ag-Cu system Acta Materialia. ,vol. 49, pp. 1537- 1540 ,(2001) , 10.1016/S1359-6454(01)00057-X
Yong-Hao Zhao, Xiao-Zhou Liao, Sheng Cheng, En Ma, Yuntian T Zhu, Simultaneously Increasing the Ductility and Strength of Nanostructured Alloys Advanced Materials. ,vol. 18, pp. 2280- 2283 ,(2006) , 10.1002/ADMA.200600310
F. Ernst, M. W. Finnis, D. Hofmann, T. Muschik, U. Schönberger, U. Wolf, M. Methfessel, Theoretical prediction and direct observation of the 9R structure in Ag. Physical Review Letters. ,vol. 69, pp. 620- 623 ,(1992) , 10.1103/PHYSREVLETT.69.620
Z.H. Xie, M. Hoffman, P. Munroe, A. Bendavid, P.J. Martin, Deformation mechanisms of TiN multilayer coatings alternated by ductile or stiff interlayers Acta Materialia. ,vol. 56, pp. 852- 861 ,(2008) , 10.1016/J.ACTAMAT.2007.10.047
Bin Chen, Jun Wang, Qiang Gao, Yujie Chen, Xiaozhou Liao, Chunsheng Lu, Hark Hoe Tan, Yiu-Wing Mai, Jin Zou, Simon P. Ringer, Huajian Gao, Chennupati Jagadish, Strengthening brittle semiconductor nanowires through stacking faults: Insights from in situ mechanical testing Nano Letters. ,vol. 13, pp. 4369- 4373 ,(2013) , 10.1021/NL402180K
Zesheng You, Xiaoyan Li, Liangjin Gui, Qiuhong Lu, Ting Zhu, Huajian Gao, Lei Lu, Plastic anisotropy and associated deformation mechanisms in nanotwinned metals Acta Materialia. ,vol. 61, pp. 217- 227 ,(2013) , 10.1016/J.ACTAMAT.2012.09.052