Effect of magnetic treatment on fatigue life of AISI 4140 steel

Influence of dissolved hydrogen on the fatigue crack growth behaviour of AISI 4140 steel

“…Although a significant number of studies have been carried out on fatigue and corrosion behaviour of high strength steels, most of these studies were carried out in 3.5% NaCl solutions [46,[48][49][50][51][52][53] in boiling sodium hydroxide [54], in gaseous hydrogen [55]. Fatigue behaviour of 4140 has also been investigated on the effect of magnetic treatment [56] and on the effect of ion nitriding [57]. However, not much information is available in literature on the influence of dissolved hydrogen (ex situ hydrogen charging) on the fatigue crack growth behaviour of AISI 4140 steel.…”

Fretting wear under magnetic field

“…As it is reported that the magnetic field affects these failures, deflection of the corrosion pattern [2] and improvement of the fatigue life [3], the authors summarize and focus on the effect of magnetic fields in wear as below.…”

Mechanical Properties Improvement of Laser Tailor Welded Blanks of DP600 Steel by Magnetic Treatment

“…Zhao [12] detected the micro-hardness of high-speed steel for cutting tools under a pulsed magnetic field, and found that magnetic treatment with appropriate parameters clearly improved the micro-hardness of the high-speed steel. Celik [13] investigated the fatigue life of AISI 4140 steel under different magnetic field intensities and found that the fatigue life increased when the magnetic field was applied up to 30% of the fatigue fracture cycle of the untreated samples, and the treated effects also varied according to different magnetic field intensities. Klamechi [14] researched the residual stress of curved strip samples with and without applying an external magnetic field and the results showed that the residual stress was reduced by 4%-13% after the particular pulsed magnetic treatment.…”