high cycle fatigue of ion nitrided 40cr steel Related introduction

  1. Cyclic deformation and fatigue behaviour of ion-nitrided steel

    The effect of the ion-nitriding process on the axial fatigue and deformation behaviour of SAE 1045 steel was investigated using smooth specimens at room temperature. Both monotonic and cyclic deformation responses of the ion-nitrided specimens are evaluated and compared with those of

  2. Crack initiation in the very high cycle fatigue regime of ...

  3. The effect of nitriding on fatigue strength of structural ...

    20MnCr5V steel after nitriding up to the depth of 0.5 mm the sharp bend of transition from low cycle fatigue area to high cycle fatigue appears (Fig. 2). Besides, in the area of low cycle fatigue the cracks initiate on the surface of speci-mens and in the area of high cycle fatigue in near surface

  4. Low Cycle Fatigue Behaviour of Nitrided Layer of

    22 Mohamed Ali Terres et al.: Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel Fig. 12. Tensile fracture topography of nitrided 42CrMo4 steel. 4.3. Overload Fatigue Sensitivity The lowcycle fatigue tests highlight an accommodation of material in these two states subjected to a total imposed deformations going from 0.55 to 1.6%.

  5. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 ...

  6. Effect of the ion nitriding surface hardening process on ...

    Effect of the ion nitriding surface hardening process on fatigue behavior of AISI 4340 steel Sule Yildiz Sirina, Kahraman Sirinb, Erdinc Kalucc, aVocational School of Asim Kocabiyik, Kocaeli University, 41800 Hereke- Kocaeli, Turkey bNoksel Steel Pipe Industries Company, 54300 Hendek- Sakarya, Turkey cDepartment of Mechanical Engineering, Engineering Faculty, Kocaeli University, 41040 high cycle fatigue of ion nitrided 40cr steel

  7. Effect of the ion nitriding surface hardening process on ...

    Up to 91% improvement in fatigue strength of the steel has been attained by ion nitriding. It was determined that, the subsurface fish eye type formation is the dominant fatigue crack initiation mechanism in ion nitrided AISI 4340 steel in high cycle region and its origin was nonmetallic inclusions.

  8. Fatigue and fretting fatigue of ion-nitrided 34CrNiMo6

    amplitude increases, the fretting fatigue strength either increases [7] or reaches a constant value [8]. Several researchers studied the eect of ion nitriding on fatigue behaviour [9,10]. In general, improvements of fatigue resistance were found for the stress-controlled high-cycle regime. Benecial

  9. EFFECT OF HEAT TREATMENT ON THE FATIGUE

    fatigue life of the material with presence of compound layer upto 10µm [5]. The fatigue strength of AISI 4340 steel was increased by up to 91% by ion nitriding process [6]. The residual stress induced induction heating in the stainless steel specimens increases the high cycle fatigue lives [7]. Fatigue strength of hybrid surface modification high cycle fatigue of ion nitrided 40cr steel

  10. Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 ...

  11. Low Cycle Fatigue Behaviour of Nitrided Layer of

    22 Mohamed Ali Terres et al.: Low Cycle Fatigue Behaviour of Nitrided Layer of 42CrMo4 Steel Fig. 12. Tensile fracture topography of nitrided 42CrMo4 steel. 4.3. Overload Fatigue Sensitivity The lowcycle fatigue tests highlight an accommodation of material in these two states subjected to a total imposed deformations going from 0.55 to 1.6%.

  12. Fatigue and fretting fatigue of ion-nitrided

    amplitude increases, the fretting fatigue strength either increases [7] or reaches a constant value [8]. Several researchers studied the eect of ion nitriding on fatigue behaviour [9,10]. In general, improvements of fatigue resistance were found for the stress-controlled high-cycle regime. Benecial

  13. LOW CYCLE AND HIGH CYCLE FATIGUE STRENGTH OF

    layer [14]. In the work [15] it is shown that in high strength steel after nitriding up to the depth of 0.5 mm the sharp bend of transition from low cycle fatigue area to high cycle fatigue appears (Fig. 1). In area of low cycle fatigue the cracks initiate on the surface of specimens and in the area of high

  14. Effect of Plasma Nitriding Treatment on Fatigue Life of En ...

  15. EFFECT OF HEAT TREATMENT ON THE FATIGUE

    fatigue life of the material with presence of compound layer upto 10µm [5]. The fatigue strength of AISI 4340 steel was increased by up to 91% by ion nitriding process [6]. The residual stress induced induction heating in the stainless steel specimens increases the high cycle fatigue lives [7]. Fatigue strength of hybrid surface modification high cycle fatigue of ion nitrided 40cr steel

  16. Very high cycle fatigue of nitrided 18Ni maraging steel ...

  17. Research on Ion Nitriding Temperature Effect on Wear ...

    For Cr12MoV steel as mold steel, it requires this steel with high surface wear resistance and enough toughness in the core (), but common heat-treatment can not meet the surface properties requirement of mold steel, Ion nitriding technology can improve them, so this paper will focus on ion nitriding effect

  18. Influence of inclusion type on the very high cycle fatigue ...

  19. EFFECT OF HEAT TREATMENT ON THE FATIGUE

    fatigue life of the material with presence of compound layer upto 10µm [5]. The fatigue strength of AISI 4340 steel was increased by up to 91% by ion nitriding process [6]. The residual stress induced induction heating in the stainless steel specimens increases the high cycle fatigue lives [7]. Fatigue strength of hybrid surface modification high cycle fatigue of ion nitrided 40cr steel

  20. SUBSURFACE CRACK INITIATION DURING FATIGUE AS A

    Abstract The influence of shot peening on the bending fatigue strength of hardened specimens of a carbon steel is reported. Effects of residual compressive stresses after shot peening, as a function of distance from the surface, are discussed along with the evidence of scanning electron micrographs from fractured specimens.

  21. Effect of Plasma Nitriding Treatment on Fatigue Life of En ...

  22. An Introduction to Nitriding - ASM International

    Nitriding THE NITRIDING PROCESS, rst developed in the early 1900s, con-tinues to play an important role in many industrial applications. Along with the derivative nitrocarburizing process, nitriding often is used in the manufacture of aircraft, bearings, automotive components, textile machin-ery, and turbine generation systems.

  23. Nitriding Process and Nitriding Steels IspatGuru

    Aug 28, 2014 · Nitriding Process and Nitriding Steels According to DIN EN 10052:1994-01, nitriding is defined as the thermo-chemical treatment of a work piece in order to enrich the surface layer with nitrogen. Carbo-nitriding involves enriching the surface layer with nitrogen and carbon.

  24. Nitriding and Carburizing, Metlab Heat Treat

    Oct 14, 2016 · The process has the advantage of being able to penetrate blind holes, and also allows for the masking of parts to keep areas which may need further machining soft. Also parts of different sizes and shapes may be nitrided in the same cycle, allowing for versatility of the process. Ion nitriding, on the other hand, is a more restrictive process.

  25. Influence of nitriding temperature on surface structural ...

    In some earlier studies [8, 9, 22], it was shown that the presence of a compound layer did not have any significant effect on high cycle fatigue strength of nitrided steel since a fatigue crack initiated under a strengthened nitrided layer. Residual stresses have a major effect on fatigue properties of nitrided steels [8, 9, 11, 22].

  26. Ion Nitriding of Ferrous and Titanium Alloys for Gear ...

    Ion nitriding is also applied to high-performance titanium alloy gears used in the aerospace industry. NITRIDING PROCESS The process of ion nitriding is carried out in a glow discharge with the workpiece as the cathode and the vessel wall is the anode [2].

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