Article

Effect of heating process on fracture behaviors of Wf/Cu82Al10Fe4Ni4 composites

Journal of Materials Science (impact factor: 2.02). 05/2012; 46(16):5541-5545. DOI:10.1007/s10853-011-5500-1 pp.5541-5545

ABSTRACT Wf/Cu82Al10Fe4Ni4(30) composites and Wf/Cu82Al10Fe4Ni4(60) composites were prepared by penetrating casting method. Three-point bending test and dynamic compression test showed
that Wf/Cu82Al10Fe4Ni4(30) composites possessed higher mechanical properties than Wf/Cu82Al10Fe4Ni4(60) composites. Microstructure observation of Wf/Cu82Al10Fe4Ni4(30) composites revealed that a small amount of tungsten diffused into the Fe–Ni solid solution precipitated on the surface
of tungsten fibers. The damage occurred mainly within the tungsten fibers after three-point bending test and dynamic compression
test in Wf/Cu82Al10Fe4Ni4(30) composites, indicating that the composites possessed high interface strength. Dislocation density was high and stacking
faults emerged in Wf/Cu82Al10Fe4Ni4(30) composites after dynamic compression. Microstructure observation of Wf/Cu82Al10Fe4Ni4(60) composites revealed that long strip of tungsten grains occurred at the edge of tungsten fibers, within which damage mainly
emerged after three-point bending test, indicating that strength of the edge of tungsten fibers was low in Wf/Cu82Al10Fe4Ni4(60) composites. The fibrous structure of tungsten fiber was coarse or even disappeared in some areas, and dislocation density
was low in Wf/Cu82Al10Fe4Ni4(60) composites after dynamic compression.

0 0
 · 
0 Bookmarks
 · 
16 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

composites
 
Dislocation density
 
dynamic compression test
 
Fe–Ni solid solution
 
fibrous structure
 
higher mechanical properties
 
interface strength
 
low
 
Microstructure observation
 
penetrating
 
small amount
 
Three-point
 
tungsten diffused
 
tungsten fiber
 
tungsten fibers
 
tungsten grains
 

Z Wu