Deformation Twinning In Bulk Nanocrystalline Metals: Experimental Observations
作者： Y. T. Zhu , X. Z. Liao , X. L. Wu
DOI: 10.1007/S11837-008-0120-1
关键词:
摘要: Deformation twins have been observed in nanocrystalline (nc) fcc metals with medium-to-high stacking fault energies such as aluminum, copper, and nickel. These their coarse-grained states rarely deform by twining at room temperature low strain rates. Several twinning mechanisms reported that are unique to nc metals. This paper reviews experimental evidences on deformation partial dislocation emissions from grain boundaries, mechanisms, zero-macro-strain. Factors affect the propensity recent analytical models critical sizes for also discussed. The current issues listed.
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