pdf fatigue strength of laser hardened 42crmo4 steel

42CrMo4 Alloy Steel, BS EN 10250 Engineering Steel

BS EN 42CrMo4 Alloy Steel is a common Chromium-Molybdenum steel. Otai steel supplies prime 42CrMo4 alloy steel which is widely used as engineering steel. An Effect of Laser Hardening on Contact and Bending The paper deals with an investigation of surface laser hardening characteristics on contact and bending fatigue resistance of a 42CrMo4 steel, being often used for manufacture of gear wheels. The aim of the experimental programme was to simulate the complex service loading of fairly large gears by two separate investigations, namely contact fatigue performed on a special, so called analogon

An approach to calculate fatigue properties of laser

Mar 01, 2012 · Regarding the fatigue strength of laser cladded components only very few investigations exist today. This situation induced an investigation whose most important technical results are presented in this paper. The final goal of this work is to predict the optimal process and material parameters for the laser cladding process regarding the fatigue strength and locations of crack initiation. Crack-Growth Behavior of Laser Surface-Alloyed Low-Carbon Apr 12, 2013 · The results of bending fatigue strength by other authors (Ref 23) showed that the fatigue limit was associated with the microstructure, the case depth, the distribution of RA, and the compressive RS in the surface modified layer. Sirin et al. (Ref 6) found a linear relationship between fatigue strength of steel and case depth. Effect of laser quenching on fatigue properties and Nov 01, 2015 · The results show that the compressive residual stress of 382 MPa is introduced by LQ, the fatigue strength improves from 368 MPa to 422 MPa, increasing by 14.7%, and the fatigue crack is initiated at the subsurface after LQ. The compressive residual stress of the Cr12MoV by LQ is of the main mechanism of the improving of fatigue property.

Evaluating surface hardened steels by laser-acoustics

Jan 15, 2012 · The use of surface acoustic waves was studied as a means of evaluating surface-hardened steels. Four different grades of steel, 42CrMo4, C45, X153CrMoV12.1 and 90MnCrV8, were laser hardened up to a depth of 1.5 mm.The construction of a laser acoustic handheld probe enabled the measurement of the propagation velocity of the surface acoustic waves on large components. Evaluation of Fatigue Strength of Heat Treated and Laser This contribution contains results of a partial study of effect of laser hardening of relatively small specimens on fatigue resistance of 42CrMo4 steel. Two different parameters of laser hardening were used, one of them resulted in considerable longitudinal residual stresses surface speed of laser beam 4 mm/s. Results of fatigue tests of basic reference material had a surprisingly high, atypical scatter, particularly in the region near fatigue HTM Journal of Heat Treatment and Materials Volume 74 Feb 06, 2019 · Oxidic steel cleanliness is known to greatly influence the fatigue strength of steel. The underlying research project work aimed to improve the oxidic cleanliness of the case hardening steel grade 18CrNiMo7-6 (DIN EN ISO 10084), whilst maintaining a fine austenite grain size during high temperature carburising.

High Power Diode Laser (HPDL) surface hardening of low

Aug 01, 2017 · Fatigue strength of laser hardened 42CrMo4 steel considering effects of compressive residual stresses on short crack growth Proc Eng , 74 ( 2014 ) , pp. 417 - 420 , 10.1016/j.proeng.2014.06.292 Article Download PDF View Record in Scopus Google Scholar Nanomechanical properties of iron nitrides produced on The bending fatigue strength of 17CrNi6-6 steel subjected to vacuum carburizing with high pressure gas hardening has been measured using a novel high-frequency technique. Thermomechanical modelling of laser surface glazing for Isotropic and kinematic hardening models have been applied separately to predict the after-yield phenomena. At 200 W laser power, the peak surface temperature achieved is 1520 K which is below the melting point (1727 K) of H13 tool steel. For laser power 300 W, the peak surface temperature is 2523 K. Tensile residual stresses on

(PDF) The Tribological properties of laser hardened steel

PDF The paper presents results of research tribological properties laser hardened steel 42CrMo4. Parameter influencing on the quality of the hardened Find, read and cite all the research