Dynamic tensile deformation behavior of Zr-based amorphous alloy matrix composites reinforced with tungsten or tantalum fibers
- Authors
- 손석수
- Issue Date
- 7월-2016
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- amorphous materials; composites; dynamic tensile deformation; fibers; split hopkinson tensile bar
- Citation
- METALS AND MATERIALS INTERNATIONAL, v.22, no.4, pp.707 - 713
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- METALS AND MATERIALS INTERNATIONAL
- Volume
- 22
- Number
- 4
- Start Page
- 707
- End Page
- 713
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/139873
- DOI
- 10.1007/s12540-016-5472-4
- ISSN
- 1598-9623
- Abstract
- Zr-based amorphous alloy matrix composites reinforced with tungsten (W) or tantalum (Ta) continuous fibers were fabricated by liquid pressing process. Their dynamic tensile properties were investigated in relation with microstructures and deformation mechanisms by using a split Hopkinson tension bar. The dynamic tensile test results indicated that the maximum strength of the W-fiber-reinforced composite (757 MPa) was much lower than the quasi-statically measured strength, whereas the Ta-fiber-reinforced composite showed very high maximum strength (2129 MPa). In the W-fiber-reinforced composite, the fracture abruptly occurred in perpendicular to the tensile direction because W fibers did not play a role in blocking cracks propagated from the amorphous matrix, thereby resulting in abrupt fracture within elastic range and consequent low tensile strength. The very high dynamic tensile strength of the Ta-fiber-reinforced composite could be explained by the presence of ductile Ta fibers in terms of mechanisms such as (1) interrupted propagation of cracks initiated in the amorphous matrix, (2) formation of lots of cracks in the amorphous matrix, and (3) sharing of loads and severe deformation (necking) of Ta fibers in cracked regions.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.