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Anisotropy in the quasi-static and cyclic behavior of ZK60 extrusion: Characterization and fatigue modeling
, Article Materials and Design ; Volume 160 , 2018 , Pages 936-948 ; 02641275 (ISSN) ; Karparvarfard, S. M. H ; Shaha, S. K ; Behravesh, S. B ; Adibnazari, S ; Jahed, H ; Sharif University of Technology
Elsevier Ltd
2018
Abstract
The quasi-static and strain-controlled fatigue characteristics of ZK60 extrusion have been investigated along three different directions: the extrusion direction (ED), the radial direction (RD), and 45° to the extrusion direction (45°). The quasi-static response showed symmetric behavior for the samples tested along RD and 45° whereas the ED samples manifested completely asymmetric behavior. Although the ED samples exhibited longer fatigue lives than the RD and 45° in the high cycle fatigue, the fatigue lives in the low cycle fatigue regime were similar. The texture measurement indicated a sharp basal texture along ED, explaining its asymmetric behavior. Higher tensile mean stress and less...