Effect of residual porosity on the fatigue life of tungsten carbide-cobalt alloys subjected to cyclic cantilever bending

1979 ◽  
Vol 18 (10) ◽  
pp. 737-739 ◽  
Author(s):  
N. I. Romanova ◽  
G. S. Kreimer ◽  
V. I. Tumanov
Keyword(s):  
Fatigue Life ◽  
Tungsten Carbide ◽  
Residual Porosity ◽  
Cobalt Alloys ◽  
Cantilever Bending

Effects of residual porosity on the properties of tungsten carbide-cobalt hard alloys

1974 ◽  
Vol 13 (8) ◽  
pp. 670-673 ◽  
Author(s):  
N. I. Romanova ◽  
G. S. Kreimer ◽  
V. I. Tumanov
Keyword(s):  
Tungsten Carbide ◽  
Residual Porosity ◽  
Hard Alloys

Tungsten Carbide Coatings on the Fatigue Life in Bending of Thermal Spray Coated Aluminum The Effect of Residual Stress in HVOF

1998 ◽  
Vol 7 (4) ◽  
pp. 546-552 ◽  
Author(s):  
R.T.R. McGrann ◽  
D.J. Greving ◽  
J.R. Shadley ◽  
E.F. Rybicki ◽  
B.E. Bodger ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fatigue Life ◽  
Tungsten Carbide ◽  
Thermal Spray ◽  
Carbide Coatings

The heat treatment of tungsten carbide-cobalt alloys

1964 ◽  
Vol 3 (2) ◽  
pp. 131-133 ◽  
Author(s):  
V. I. Tumanov ◽  
V. F. Funke ◽  
Z. S. Trukhanova ◽  
T. A. Novikova ◽  
K. F. Kuznetsova
Keyword(s):  
Heat Treatment ◽  
Tungsten Carbide ◽  
Cobalt Alloys

Fatigue Life in Bending and Coatings Residual Stress in Tungsten Carbide Thermal Spray Coatings

1997 ◽  
Author(s):  
R.T.R. McGrann ◽  
J.R. Shadley ◽  
E.F. Rybicki ◽  
D.J. Graving ◽  
B.E. Badger ◽  
...  
Keyword(s):  
Residual Stress ◽  
Fatigue Life ◽  
Tungsten Carbide ◽  
Thermal Spray ◽  
Thermal Spray Coatings ◽  
Chrome Plating ◽  
Spray Coatings ◽  
Wear Protection ◽  
Carbide Coatings ◽  
Flat Beam

Abstract Tungsten caibide (WC) thermal spray coatings are being used for wear protection on selected components of aircraft. Tungsten carbide coatings are being used on aircraft flap tracks and fan and compressor blade mid-span dampers. However, a larger use of tungsten carbide coatings is being considered for other commercial aircraft applications where it would be used as a replacement for chrome plating. For instance, WC coatings are currently being tested on aircraft landing gear parts. One factor that affects the suitability of WC coatings for these applications is the fatigue life of the coated part. Coatings, whether chrome plating or thermal spray coating, can reduce the fatigue life of the part compared to an uncoated part. This study compares the fatigue life of uncoated 6061 aluminum specimens to the fatigue life of WC thermal sprayed coated 6061 aluminum specimens. The relation between the residual stress level in the coating and the fatigue life of the specimens is also investigated. Fatigue tests were run on cantilever flat beam specimens that were coated on one side. Specimens were cycled in bending so that the coatings experienced tensile fatigue stresses. Residual stress levels for each type of coating were determined using the Modified Layer Removal Method on specimens processed along with the cantilever flat beam specimens. Test results show that the fatigue life of the WC coated specimens is directly related to the level of compressive residual stress in the coating.

Thermal shock resistance of tungsten carbide-cobalt alloys

1966 ◽  
Vol 5 (10) ◽  
pp. 818-822
Author(s):  
V. I. Tumanov ◽  
Z. A. Gol'dberg ◽  
V. V. Chernyshev ◽  
Z. I. Pavlova
Keyword(s):  
Tungsten Carbide ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Cobalt Alloys ◽  
Shock Resistance
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