Schmid factor maps to predict slip and twinning behaviours in Zirconium

doi:10.12442/j.issn.1002-185X.E20180023

Home > Archive>Volume 48, Issue 8, 2019 >2400-2405. DOI:10.12442/j.issn.1002-185X.E20180023

Schmid factor maps to predict slip and twinning behaviours in Zirconium
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                        10.12442/j.issn.1002-185X.E20180023
                    
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                        Chao Xin1Chao Xin
State Key Laboratory for Mechanical Behavior of Materials
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Qiaoyan Sun1Qiaoyan Sun
State Key Laboratory for Mechanical Behavior of Materials
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Lin Xiao2Lin Xiao
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Jun Sun2Jun Sun
State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Affiliation:1.State Key Laboratory for Mechanical Behavior of Materials;2.State Key Laboratory for Mechanical Behavior of Materials,Xi’an Jiaotong University,Xi’an
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Abstract:

A series of Schmid factor (SF) maps for different slip and twinning modes in Zirconium were systematically calculated and comprehensively illustrated as a function of the tensile angle between the applied stress and the c-axis together with the projective angle on the basal plane. The deformation modes include three groups of slip systems, i.e. basal, prismatic, pyramidal and slips and four groups of twinning systems, i.e.{10-12}, {11-21}, {11-22} and {10-11}. The “soft” and “hard” orientation zones were determined in terms of individual plastic deformation modes. A variant selection criterion for slip and twinning of Zirconium is proposed. The plastic deformation mechanisms are interpreted based on the Schmid factor maps in combination with the experimental data on the critical resolved shear stress (CRSS) for different deformation modes. The predicted plastic deformation mechanisms are consistent with the existing experimental results.

Key words:Schmid law; slip; twinning; variant selection; anisotropy; Zirconium.

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[Chao Xin, Qiaoyan Sun, Lin Xiao, Jun Sun. Schmid factor maps to predict slip and twinning behaviours in Zirconium[J]. Rare Metal Materials and Engineering,2019,48(8):2400~2405.]
DOI：10.12442/j. issn.1002-185X. E20180023

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Received:August 15,2018
Revised:August 11,2019
Adopted:October 08,2018
Online: September 05,2019
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