In this paper, the mechanical properties and microstructures of AISI4140 low alloy steel under different tempering conditions are investigated. The samples are quenched, tempered to a martensite structure and loaded to fracture by means of Charpy machine according to standard test. Fractography analysis showed that the morphology fracture surface was changed by
(PDF) About the role of residual stresses and surface work The results suggest that the effectiveness of shot peening on nitrided components is related The material considered is the steel 42CrMo4 UNI EN to the inclusion rate and to the typical inclusion dimension of the 10083 (UTS = 1100 MPa, Yield Strength = 950 MPa, Elastic steel; however no reliable relation can be found if the strength of Modulus
products can be obtained with local nitriding. Nitriding solutions offer very hard surfaces, high compressive stresses and therefore high fatigue properties. Nevertheless, the nitriding depth is often limited to 500 microns which is not suitable for numerous applications. AUBERT&DUVAL has developed a new nitriding grade, GKP, which offers:
Corrosion Resistance of Plasma Nitrided and surface hardness, running-in properties and corrosion resistance. For the evaluation of experimental NSS corro-sion resistance tests samples of 42CrMo4 steel were compared with plasma nitrided and nitrocarburized one. In-dividual 42CrMo4 steel samples were subsequently metallographically evaluated and characterized by hardness
Effect of Plasma Nitriding Treatment on Fatigue Life of En  Mohamed Ali Terres, Habib Sidhom, Fatigue life evaluation of 42CrMo4 nitrided steel by local approach:Equivalent strain-life-time Materials and Design 33, 444450, (2012)  S. Ganesh Sundara Raman, M. Jayaprakash, Influence of plasma nitriding on plain fatigue and fretting fatigue behavior of AISI 304 austenitic stainless
The effect of pre-corrosion pits on residual fatigue life for the 42CrMo steel (American grade:AISI 4140) is investigated using the accelerated pre-corrosion specimen in the saline environment. Different pre-corroded times are used for the specimens, and fatigue tests with different loads are then carried out on specimens. The pre-corrosion fatigue life is studied, and the fatigue
Effect of Surface Properties on the Fatigue Life of The Concept of Local Fatigue Strength Extended by Statistical Approaches to Assess Manufacturing Influences such as Residual Stresses Sidhom H. Fatigue life evaluation of 42CrMo4 nitrided steel by local approach:Equivalent strain-life
Fatigue Strength and Failure Mechanisms of Nitrided Small The program was carried out as a separate part of the complex evaluation of fatigue resistance of gears against failure. The nitriding process resulted in unforeseen, mostly negative effectsin a strong reduction of fatigue life and fatigue limit in most cases. Fatigue limit only was slightly increased, namely, by 10% in case of smooth specimens.
The program was carried out as a separate part of the complex evaluation of fatigue resistance of gears against failure. The nitriding process resulted in unforeseen, mostly negative effectsin a strong reduction of fatigue life and fatigue limit in most cases. Fatigue limit only was slightly increased, namely, by 10% in case of smooth specimens.
Ijariie1166 - SlideShareJul 05, 2015 · A. Ben CheikhLarbi.,Improvement of the adhesive wear resistance of steel by nitriding quantified by the energy dissipated in friction Elsevier-Wear ,PP 712-718, 2005.  Mohamed Ali, Fatigue life evaluation of 42CrMo4 nitrided steel by local approach:Equivalent strain-life-time Elsevier- Material and Design 33, PP 444-450,2012.  D.
Influence of Indentation on the Fatigue Strength of To study the influence of indentation on the fatigue strength of untreated and carbonitrided specimens of S38C steel, the fatigue limit of specimens with and without indentations was tested. Fracture surfaces were observed using scanning electron microscopy (SEM). The results show that the fatigue strength of the untreated specimen decreases with increasing dimension of
Terres, M.A., Sidhom, H. (2012) Fatigue life evaluation of 42CrMo4 nitrided steel by local approach:Equivalent strain-life-time. Materials and Design, 33, 444450. Cerca con Google
Materials Free Full-Text Fatigue Limit of Custom 465 In order to study the effect of nitriding or shot peening on the surface modification and fatigue properties of martensitic stainless-steel Custom 465, the residual stress and micro-hardness of the strengthened layer are determined by X-ray and micro-hardness tester, respectively. The up-and-down method is used to measure the rotational bending fatigue strength at 1 × 107
Modeling of Residual Stress Genesis of 42CrMo4 Terres M.A,SIDHOM H; Fatigue life evaluation of 42CrMo4 nitrided steel by local approach. Materials and Design 33 (2012) 444450: Terres M.A,S.Ben Mohamed et H.Sidhom Influence of ion nitriding on fatigue strength of low-alloy (42CrMo4) steel:Experimental characterization and predictive approach;IJF2010
Jul 13, 2019 · Terres MA, Sidhom H (2012) Fatigue life evaluation of 42CrMo4 nitrided steel by local approach:equivalent strain-life-time. Mater Des 33:444450 Article Google Scholar
Vol. 2, Issue 8, August 2013 Effect of Plasma Nitriding Studies on the effect of plasma nitriding on repair process of fatigue damaged AISI 4140 steel show that the process applied to untreated specimens improves the fatigue life of the specimens that were plasma nitrided. However, for the nitrided specimens, a significant improvement in the fatigue life has not been observed because of the compound 10.1016/j.matdes.2011.04.047 DeepDyveJun 11, 2020 · The fatigue life improvement of steels by nitriding depends on the characteristics of the nitrided layers, in particular the residual stresses distributions and the work-hardening  . It is well established that the fatigue life, in particular the fatigue crack nucleation, depends on the cumulated deformation rate in the starting