The correlation of slip transmission/blockage with the fracture in Al-Mg alloy

An in-situ tensile test of Al-6wt.%Mg alloy has been conducted to explore the relations between slip transmission with fracture behavior. Detailed in-situ electron backscatter diffraction characterization and analysis of 1400 grain boundaries (GBs) were carried out at five different strain states. T...

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Bibliographic Details
Published inScripta materialia Vol. 230; p. 115402
Main Authors Zong, S.W., You, X.J., Yang, J., Dan, C.Y., Jin, L., Shi, Q.W., Wang, H.W., Chen, Z.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2023
Subjects
Aluminum alloys
EBSD
Fracture
Heterogeneous deformation
Slip
Aluminum alloys
Fracture
Heterogeneous deformation
EBSD
Slip
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Summary:An in-situ tensile test of Al-6wt.%Mg alloy has been conducted to explore the relations between slip transmission with fracture behavior. Detailed in-situ electron backscatter diffraction characterization and analysis of 1400 grain boundaries (GBs) were carried out at five different strain states. Three slip transmission parameters, Schmid factor m, Luster-Morris parameter m′, and residual Burgers vector Δb, were analyzed to characterize the dislocation-GBs interactions. Both intergranular and intragranular fracture was observed in the tensile test. The intergranular fractures tend to occur at slip-blocked GBs due to local strain concentration. The intragranular fracture traces coincide with grains having GBs where slip transmission traces were observed. The revealed correlations of slip transmission/blockage with fracture can be applied to failure analysis and simulation of polycrystalline materials. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2023.115402