Vickers indentation fracture toughness test Part 2 Application and critical evaluation of standardised indentation toughness equations

1989 ◽  
Vol 5 (10) ◽  
pp. 961-976 ◽  
Author(s):  
C. B. Ponton ◽  
R. D. Rawlings
Keyword(s):  
Fracture Toughness ◽  
Critical Evaluation ◽  
Fracture Toughness Test ◽  
Vickers Indentation ◽  
Indentation Fracture ◽  
Test Part ◽  
Indentation Toughness ◽  
Toughness Test ◽  
Indentation Fracture Toughness

Microstructure and Mechanical Properties of Sm1-xSrxCo0.2Fe0.8O3

2000 ◽  
Vol 15 (7) ◽  
pp. 1505-1513 ◽  
Author(s):  
Y-S. Chou ◽  
J. W. Stevenson ◽  
T. R. Armstrong ◽  
J. S. Hardy ◽  
K. Hasinska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Fracture Behavior ◽  
Room Temperature ◽  
Indentation Fracture ◽  
Flexure Strength ◽  
Indentation Toughness ◽  
Indentation Fracture Toughness ◽  
Microhardness Indentation ◽  
Biaxial Flexure

The room temperature mechanical properties of a mixed conducting perovskite Sm1?xSrxCo0.2Fe0.8O3 (x = 0.2 to 0.8) were examined. Density, crystal phase, and microstructure were characterized. It was found that the grain size increased abruptly with increasing Sr content. Mechanical properties of elastic modulus, microhardness, indentation fracture toughness, and biaxial flexure strength were measured. Young's modulus of 180–193 GPa and shear modulus of 70–75 GPa were determined. The biaxial flexure strength was found to decrease with increasing Sr content from ∼70 to ∼20 MPa. The drop in strength was due to the occurrence of extensive cracking. Indentation toughness showed a similar trend to the strength in that it decreased with increasing Sr content from ∼1.1 to ∼0.7 MPa m1/2. In addition, fractography was used to characterize the fracture behavior in these materials.

scholarly journals Vickers Indentation Fracture Toughness of Near-Nano and Nanostructured WC-Co Cemented Carbides

Metals ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 143 ◽  
Author(s):  
Tamara Aleksandrov Fabijanić ◽  
Danko Ćorić ◽  
Mateja Šnajdar Musa ◽  
Matija Sakoman
Keyword(s):  
Fracture Toughness ◽  
Cemented Carbides ◽  
Vickers Indentation ◽  
Indentation Fracture ◽  
Indentation Fracture Toughness

Fracture Toughness of HVOF Sprayed Cermet Coatings Measured by Vickers Indentation

2011 ◽  
Vol 465 ◽  
pp. 475-478 ◽  
Author(s):  
Šárka Houdková ◽  
František Zahálka ◽  
Michaela Kašparová
Keyword(s):  
Fracture Toughness ◽  
Indentation Test ◽  
Vickers Indentation ◽  
Indentation Fracture ◽  
Cermet Coatings ◽  
Indentation Fracture Toughness ◽  
Cracking Mode

In the paper, the indentation fracture toughness of the HVOF sprayed WC-12%Co coatings is determined by the Vickers indentation test in dependence on used load. The relations, proposed by Chicot, were used to calculate the value of KIc at condition of the Palmqvist, Intermediate and Radial-median cracking mode. The applicability of using different equations is discussed with respect to the size indentation effect of IFT.

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