{11(2)over-bar1}-{10(1)over-bar2} double twinning in a Zircaloy-4 alloy during rolling at ambient temperature

SCRIPTA MATERIALIA

卷:122

Article

Zhang, M.¹  Luan, B. F.¹  Song, Z. L.¹  Xin, R. L.¹  Murry, K. L.²  Liu, Q.¹ 

[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China

[2] N Carolina State Univ, Dept Nucl Engn, Raleigh, NC 27695 USA

关键词: Zircaloy-4;    Double twinning;    Electron backscattering diffraction (EBSD);    Schmid factor;    Local strain accommodation;   

DOI  :  10.1016/j.scriptamat.2016.05.003

来源: Elsevier

【 摘 要 】

In this paper, we report the formation of an atypical double twinning sequence in Zircaloy-4 during rolling at room temperature. The grain orientation analysis based on electron backscattering diffraction (EBSD) data reveals that this double twinning mode is of the {11 (2) over bar1}-(10 (1) over bar2} type, namely, the secondary {10 (1) over bar -2} twin generated within the primary {11 (2) over bar1} twin. Based on the combinative analysis of Schmid factor and local strain accommodation, the formation and variant selection mechanism of this double twinning are discussed. (C) 2016 Elsevier Ltd. All rights reserved.

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