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Fatigue in AISI 4340 steel thermal spray coating by HVOF for aeronautic application
(Elsevier B.V., 2010-01-01)
Currently, high-strength materials, particularly AISI 4340 steel, are used in several landing gear components. Due to the high resistance to wear and corrosion required, the components are usually coating by hard chromium. ...
Effect of electroless nickel interlayer on the fatigue strength of chromium electroplated AISI 4340 steel
(Elsevier B.V., 2007-04-01)
Deposition of wear-resistant hard chromium plating leads to a decrease in the fatigue strength of the base material. Despite the effective protection against wear and corrosion, fatigue life and environmental requirements ...
Evaluation of WC-17Co and WC-10Co-4Cr thermal spray coatings by HVOF on the fatigue and corrosion strength of AISI 4340 steel
(Elsevier B.V., 2005-01-21)
It is known that chromium electroplating is related to the reduction in the fatigue strength of base metal. However, chromium results in protection against wear and corrosion combined with chemical resistance and good ...
Residual stress influence on fatigue lifetimes of electroplated AISI 4340 high strength steel
(Blackwell Publishing, 2007-11-01)
Residual stresses play an important role in the fatigue lives of structural engineering components. In the case of near surface tensile residual stresses, the initiation and propagation phases of fatigue process are ...
Fatigue strength of HVOF sprayed Cr(3)C(2)-25NiCr and WC-10Ni on AISI 4340 steel
(Elsevier B.V. Sa, 2008-11-25)
The fatigue strength of coated material is significantly influenced by internal residual stresses. Chromium coatings are used in applications to guarantee protection against wear and corrosion, combined with chemical ...
An evaluation of shot peening, residual stress and stress relaxation on the fatigue life of AISI 4340 steel
(Elsevier B.V., 2002-08-01)
Shot peening is a method widely used to improve the fatigue strength of materials. through the creation of a compressive residual stress field (CRSF) in their surface layers. In the present research the gain in fatigue ...
Evaluation of the oil flow using the MQL technique applied in the cylindrical plunge grinding of AISI 4340 steel with cbn grinding wheel
(Fundação Gorceix, 2018-07-01)
Abstract The grinding process is defined as an abrasive cutting action of a tool known as grinding wheel, which is submitted to high rotations, promoting excellent finishing and accuracy in dimensions, respecting the ...
Influence of water in the MQL technique in the grinding of steel AISI 4340 using CBN wheels
(Fundação Gorceix, 2018-07-01)
Abstract Usually, machining employs cooling methods to avoid high temperatures. In most cases, the cutting fluid is applied with high flow and low pressures. This technique consumes a large amount of cutting fluid that ...
Effect of a Shot Peening Pre Treatment on the Fatigue Behaviour of Hard Chromium on Electroless Nickel Interlayer Coated AISI 4340 Aeronautical Steel
(ABM, ABC, ABPol, 2002-06)
Multiple layer systems of coatings are considered to have larger resistance to crack propagation in comparison to coatings with simple layer. With regard to fatigue, it is possible to improve the resistance of a component ...
Application of CAMQL technique on external cylindrical grinding of aisi 4340 steel with CBN grinding wheelAplicação da técnica de CAMQL na retificação cilíndrica externa do aço aisi 4340 utilizando rebolo de CBN
(2019-01-01)
The grinding process provides us with good surface finish and good dimensional and geometric precision. Also, ground pieces have a high added value due to this process being a finishing one and is commonly carried out in ...