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Paper Information

Journal:   JOURNAL OF METALLURGICAL AND MATERIALS ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)   2018 , Volume 30 , Number 1 ; Page(s) 131 To 140.
 
Paper: 

Investigation of Failure Behavior of W/ (Zr55Cu30Al10Ni5)100-xNbx Composites during Compression Test

 
 
Author(s):  Mahmoodan m., Gholamipour r.*, MIRDAMADI SH., NATEGH S.
 
* 
 
Abstract: 
(Zr55Cu30Al10Ni5)100-xNb(x= 0, 2) bulk metallic glass matrix/tungsten wire composites were fabricated by infiltration process at 950 ◦ C and 15 minute processing time. Structural studies and mechanical behaviors of the materials were investigated by scanning electron microscopy and compressive tests, respectively. Based on the results, the fracture surface in the composite sample with X=2 was vein like pattern and with increase of the vein's intensity in the matrix, the ductility reached 28%. In the niobium-free composite sample the secondary intermetallic phases of (W2Zr, W5Zr3) (as the crack nucleation sites) act as the stress concentration sites and the fracture surface changed to smooth mode. In addition, the composite ductility was reduced because of the rapid convection of shear bands to cracks.
 
Keyword(s): Composite,Bulk Metallic Glass,Niobium,Fracture Surface
 
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