Effect of Nanostructured Thermal Spray Coatings on Fatigue Behavior of Low-Carbon Steel

2008 ◽  
Author(s):  
Ahmed Ibrahim ◽  
Christopher C. Berndt
Keyword(s):  
Fatigue Strength ◽  
Carbon Steel ◽  
Surface Deformation ◽  
Fatigue Behavior ◽  
Low Carbon Steel ◽  
Sem Analysis ◽  
Low Carbon ◽  
Air Plasma ◽  
Spray Coatings ◽  
Thermally Sprayed

Nanostructured and conventional titania (TiO2) coatings were thermally sprayed using air plasma spray (APS) and high velocity oxy-fuel (HVOF) processes. The fatigue and mechanical properties of these coatings were investigated. The fatigue strength of coatings deposited onto low-carbon steel showed that the nanostructured titania coated specimens exhibited significantly higher fatigue strength compared to the conventionally sprayed titania. SEM analysis of fracture surfaces revealed valuable information regarding the influence of these coatings on the performance of the coated component. Analysis of surface deformation around Vickers indentations was carried out. This investigation gives new understanding to the nature of fatigue and deformation of these coatings.

Fatigue behavior of a thermally sprayed low carbon steel coating

2000 ◽  
Vol 277 (1-2) ◽  
pp. 176-182 ◽  
Author(s):  
Pi Lin Liu ◽  
Jian Ku Shang ◽  
Oludele O Popoola
Keyword(s):  
Carbon Steel ◽  
Fatigue Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Steel Coating ◽  
Thermally Sprayed

On the Decrease of Fatigue Limit Due to Small Prestrain

1992 ◽  
Vol 114 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Y. Nagase ◽  
S. Suzuki
Keyword(s):  
Growth Rate ◽  
Carbon Steel ◽  
Fatigue Limit ◽  
Surface Crack ◽  
Fatigue Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Small Surface ◽  
Bending Tests ◽  
Rotating Bending

Fatigue behavior of plain specimens of low carbon steel subjected to small tensile prestrain is investigated through rotating bending tests and the mechanism of the decrease of fatigue limit due to the prestrain is discussed. It is found that 3 percent prestraining causes the acceleration of both slip and crack initiations, and increases the growth rate of a small surface crack of less than 0.3 mm. It also decreases the fatigue limit. If prestrained material is aged, the fatigue limit increases. These effects of the small prestrain are explained based on the unpinning of locked dislocations due to the prestrain.

scholarly journals Effect of Grain-size on Fatigue Strength of Low Carbon Steel at Elevated Temperatures

1978 ◽  
Vol 21 (152) ◽  
pp. 181-188 ◽  
Author(s):  
Norihiko HASEGAWA ◽  
Yozo KATO ◽  
Masaki NAKAJIMA
Keyword(s):  
Grain Size ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
Elevated Temperatures ◽  
Low Carbon Steel ◽  
Low Carbon
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