Crystallographic study of plasticity and grain boundary separation in FeCo alloy using small single- and bi-crystalline specimens. (1st January 2018)

• Record Type: Journal Article
• Authors: Kishi, Daichi; Mayama, Tsuyoshi; Mine, Yoji; Takashima, Kazuki
• Is Part Of: Scripta materialia. Number 142(2018)
• Page Start: 1
• Page End: 5
• Publication Date: 2018-01-01
• Subjects: Micromechanical characterisation -- Intermetallic compounds -- Grain boundaries -- Plastic deformation -- Finite element analysis; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.08.012
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: To study the relationship between the plasticity and intergranular fracture of FeCo intermetallic alloys, small, single- and bi-crystalline specimens were subjected to micro-tensile testing and crystal plasticity finite element analyses. The single-crystalline specimens exhibited a high strength and a large strain-to-failure compared with the bi-crystalline and polycrystalline specimens. The critical resolved shear stress for the {1 1 ¯ 0} 〈111〉 slip was ~ 100 MPa. For the bi-crystalline specimen, the intergranular fracture was determined by stress concentration due to the difference in the strain between the deformed and undeformed crystals. Graphical abstract: