caa a22 4500 463224302 CHVBK 20180405153222.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0238-x doi (NATIONALLICENCE)springer-10.1007/s10853-006-0238-x Mechanical properties for bulk metallic glass with crystallites precipitation and second ductile phase addition [Elektronische Daten] [Ke-Qiang Qiu, D. Hao, Y. Ren, H. Zhang] Monolithic phase bulk metallic glasses (BMGs) produced by a copper mold casting method and BMG composites containing in-situ brittle crystallites and out-situ tungsten fiber produced by a water quenching method were obtained. Mechanical properties including cyclic deformation and fracture toughness were investigated. Under symmetrically cyclic stress control, the life of tungsten fiber reinforced amorphous alloy is much longer than that of the monolithic amorphous alloy. The composite containing tungsten fibers that retard the crack propagation exhibits cyclic softening while the partially crystallized amorphous alloy exhibits stable cycling. The regions of crack initiation, stable propagation and final fracture were observed on the fracture surface. Crystalline brittle phases do not retard the crack propagation but become sites of crack initiation. Tungsten fiber reinforced BMG has the largest fracture toughness while BMG with quenched-in crystallites the smallest. Tungsten fibers stabilize crack growth in the matrix and extend the strain to failure of the composite, while brittle crystallites speed up the crack propagation even though they act as obstacles when shear bands reach them in some cases. Springer Science+Business Media, LLC, 2007 Qiu Ke-Qiang School of Materials Science and Engineering, Shenyang University of Technology, 110023, Shenyang, China aut Hao D. Liaoning Institute of Technology, 121001, Jinzhou, China aut Ren Y. School of Materials Science and Engineering, Shenyang University of Technology, 110023, Shenyang, China aut Zhang H. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3223-3229 0022-2461 42:9<3223 2007 42 10853 https://doi.org/10.1007/s10853-006-0238-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0238-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Qiu Ke-Qiang School of Materials Science and Engineering, Shenyang University of Technology, 110023, Shenyang, China aut NATIONALLICENCE 700 1- Hao D. Liaoning Institute of Technology, 121001, Jinzhou, China aut NATIONALLICENCE 700 1- Ren Y. School of Materials Science and Engineering, Shenyang University of Technology, 110023, Shenyang, China aut NATIONALLICENCE 700 1- Zhang H. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 110016, Shenyang, China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/9(2007-05-01), 3223-3229 0022-2461 42:9<3223 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer