Improvement of the fatigue strength of AISI 4140 steel by an ion nitriding process

1995 ◽  
Vol 72 (3) ◽  
pp. 169-173 ◽  
Author(s):  
A. Çelik ◽  
S. Karadeniz
Keyword(s):  
Fatigue Strength ◽  
Nitriding Process ◽  
Ion Nitriding ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Effect of ion nitriding on fatigue behaviour of AISI 4140 steel

2000 ◽  
Vol 279 (1-2) ◽  
pp. 207-216 ◽  
Author(s):  
Kenan Genel ◽  
Mehmet Demirkol ◽  
Mehmet Çapa
Keyword(s):  
Fatigue Behaviour ◽  
Ion Nitriding ◽  
Aisi 4140 Steel ◽  
Aisi 4140

scholarly journals Influence of the deep hole drilling process and sulphur content on the fatigue strength of AISI 4140 steel components

Procedia CIRP ◽  
2018 ◽  
Vol 71 ◽  
pp. 209-214 ◽  
Author(s):  
Jan Nickel ◽  
Nikolas Baak ◽  
Dirk Biermann ◽  
Frank Walther
Keyword(s):  
Fatigue Strength ◽  
Sulphur Content ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Deep Hole Drilling ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Investigation of compound layer formed during ion nitriding of AISI 4140 steel

1996 ◽  
Vol 80 (3) ◽  
pp. 283-286 ◽  
Author(s):  
A. Çelik ◽  
S. Karadeniz
Keyword(s):  
Compound Layer ◽  
Ion Nitriding ◽  
Aisi 4140 Steel ◽  
Aisi 4140

Weld quality and productivity of AISI 4140 steel welded by unpulsed and pulsed GMAW

2018 ◽  
Vol 60 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Turhan Kursun ◽  
Tanju Teker
Keyword(s):  
Weld Quality ◽  
Aisi 4140 Steel ◽  
Aisi 4140

MODELING AND INVESTIGATION OF THE WEAR RESISTANCE OF SALT BATH NITRIDED AISI 4140 VIA ANN

2013 ◽  
Vol 20 (03n04) ◽  
pp. 1350033 ◽  
Author(s):  
ŞERAFETTIN EKINCI ◽  
AHMET AKDEMIR ◽  
HUMAR KAHRAMANLI
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Surface Characterization ◽  
Wear Behavior ◽  
Surface Hardness ◽  
Salt Bath ◽  
Back Propagation Algorithm ◽  
Aisi 4140 Steel ◽  
Aisi 4140 ◽  
Sliding Distance

Nitriding is usually used to improve the surface properties of steel materials. In this way, the wear resistance of steels is improved. We conducted a series of studies in order to investigate the microstructural, mechanical and tribological properties of salt bath nitrided AISI 4140 steel. The present study has two parts. For the first phase, the tribological behavior of the AISI 4140 steel which was nitrided in sulfinuz salt bath (SBN) was compared to the behavior of the same steel which was untreated. After surface characterization using metallography, microhardness and sliding wear tests were performed on a block-on-cylinder machine in which carbonized AISI 52100 steel discs were used as the counter face. For the examined AISI 4140 steel samples with and without surface treatment, the evolution of both the friction coefficient and of the wear behavior were determined under various loads, at different sliding velocities and a total sliding distance of 1000 m. The test results showed that wear resistance increased with the nitriding process, friction coefficient decreased due to the sulfur in salt bath and friction coefficient depended systematically on surface hardness. For the second part of this study, four artificial neural network (ANN) models were designed to predict the weight loss and friction coefficient of the nitrided and unnitrided AISI 4140 steel. Load, velocity and sliding distance were used as input. Back-propagation algorithm was chosen for training the ANN. Statistical measurements of R2, MAE and RMSE were employed to evaluate the success of the systems. The results showed that all the systems produced successful results.

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