The role of specimen thickness in the fracture toughness and fatigue crack growth resistance of nanocrystalline platinum films

2012 ◽  
Vol 60 (3) ◽  
pp. 1408-1417 ◽  
Author(s):  
Roi A. Meirom ◽  
Trevor E. Clark ◽  
Christopher L. Muhlstein
Keyword(s):  
Fracture Toughness ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Crack Growth Resistance ◽  
Specimen Thickness ◽  
Fatigue Crack Growth Resistance

scholarly journals Mechanical and Fatigue Properties of Diamond Reinforced Cu and Al Metal Matrix Composites Prepared by Cold Spray

2021 ◽  
Author(s):  
O. Kovarik ◽  
J. Cizek ◽  
S. Yin ◽  
R. Lupoi ◽  
M. Janovska ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Cold Spray ◽  
Pure Metal ◽  
Crack Growth Resistance ◽  
Fatigue Properties ◽  
Matrix Composites ◽  
Fatigue Crack Growth Resistance

Abstract Diamond-reinforced composites prepared by cold spray are emerging materials simultaneously featuring outstanding thermal conductivity and wear resistance. Their mechanical and fatigue properties relevant to perspective engineering applications were investigated using miniature bending specimens. Cold sprayed specimens with two different mass concentrations of diamond 20% and 50% in two metallic matrices (Al – lighter than diamond; Cu – heavier than diamond) were compared with the respective pure metal deposits. These pure metal coatings showed rather limited ductility. The diamond addition slightly improved ductility and fracture toughness of the Cu-based composites; having a small effect also on the fatigue crack growth resistance. In case of the Al composites; the ductility as well as fatigue crack growth resistance and fracture toughness have improved significantly. The static and fatigue failure mechanisms were fractographically analyzed and related to the microstructure of the coatings; observing that particle decohesion is the primary failure mechanism for both static and fatigue fracture.

Role of nanotwins on fatigue crack growth resistance – Experiments and theory

2016 ◽  
Vol 84 ◽  
pp. 28-39 ◽  
Author(s):  
Sertan Alkan ◽  
Piyas Chowdhury ◽  
Huseyin Sehitoglu ◽  
Richard G. Rateick ◽  
Hans J. Maier
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Crack Growth Resistance ◽  
Fatigue Crack Growth Resistance
Sign in / Sign up

Export Citation Format

Share Document