Quasi-Static and Dynamic Deformation Behavior of STS304-and Ta-fiber-reinforced Zr-based Amorphous Matrix Composites Fabricated by Liquid Pressing Process

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Zr-based amorphous alloy matrix composites reinforced with stainless steel (STS) and tantalum continuous fibers were fabricated without pores or defects by a liquid pressing process, and their quasi-static and dynamic deformation behaviors were investigated by using a universal testing machine and a Split Hopkinson pressure bar, respectively. The quasi-static compressive test results indicated that the fiber-reinforced composites showed a maximum strength of about 1050 similar to 1300 MPa, and its strength maintained over 700 MPa until reaching a strain of 40%. Under dynamic loading, the maximum stresses of the composites were considerably higher than those under quasi-static loading because of the strain-rate hardening effect, whereas the fracture strains were considerably lower than those under quasi-static loading because of the decreased resistance to fracture. The STS-fiber-reinforced composite showed a greater compressive strength and ductility under dynamic loading than the tantalum-fiber-reinforced composite because of the excellent resistance to fracture of STS fibers.
Publisher
KOREAN INST METALS MATERIALS
Issue Date
2010-06
Language
English
Article Type
Article
Keywords

BULK METALLIC-GLASS; MECHANICAL-PROPERTIES; TUNGSTEN; ALLOY; MICROSTRUCTURE; PHASE; STEEL; CRYSTALLINE

Citation

KOREAN JOURNAL OF METALS AND MATERIALS, v.48, no.6, pp.477 - 488

ISSN
1738-8228
DOI
10.3365/KJMM.2010.48.06.477
URI
http://hdl.handle.net/10203/100423
Appears in Collection
ME-Journal Papers(저널논문)
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