| Title |
Quasi-Static and Dynamic Deformation Behavior of STS304- and Ta-fiber-reinforced Zr-based Amorphous Matrix Composites Fabricated by Liquid Pressing Process |
| Authors |
허훈(Hoon Huh); 김진성(Jin Sung Kim); 이성학(Sung Hak Lee); 김기종(Ki Jong Kim); 신상용(Sang Yong Shin); 김용지(Yong Jin Kim) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.06.477 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Composites; infiltration; strain rate; impact test; Liquid pressing process |
| Abstract |
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 fiberreinforced composites showed amaximum strength of about 1050~1300 MPa, and its strength maintained over 700 MPa until reaching astrain 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. |