Tearing Toughness of Ductile Metals

doi:10.1007/s40195-016-0371-8

Abstract

Abstract:

A new parameter, i.e., tearing toughness, was employed to characterize the mechanical properties of some ductile metals (Cu, Cu-2 wt% Be, Cu-Al alloys, and some steels) by using three-leg trousers tearing tests. The experimental results demonstrate that their tearing toughness is not a physical constant and shows a close relationship with the materials’ types and microstructures. It can be inferred that the tearing toughness of different ductile metals has their respective variation range, expectantly, and may be represented by the comprehensive mechanical properties of strength and ductility for various ductile materials.

Key words: Ductile, metals, Strength, Ductility, Tearing, toughness

Cui-Hong Li, Qi-Qiang Duan, Zhe-Feng Zhang. Tearing Toughness of Ductile Metals[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(2): 150-155.

Figures/Tables 4

Fig. 1 a Typical tearing specimen and tearing tests at different stages, b onset of tearing, c stable propagation of tearing crack, d final tearing fracture

Fig. 2 Relationship between strength and elongation of 20 steel a, Cu-2 wt% Be alloy b, cold-rolled Cu-Al alloys c, annealed Cu-Al alloys d

Fig. 3 Tearing load-displacement curves of 20 steel a, Cu b, Cu-2 wt% Be alloy c, cold-rolled and annealed Cu-Al alloys d

Fig. 4 a, b Schematic diagrams of tearing load-displacement curve, c dependence of tearing toughness on the ultimate tensile strength of different ductile materials, d schematic illustration of trade-off relationship between strength and ductility of materials

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