Effect of carburizing on notch fatigue behaviour in AISI 316 austenitic stainless steel

Akita, Masayuki; Tokaji, Keiro

doi:10.1016/j.surfcoat.2005.09.018

Cited by 49 publications

(31 citation statements)

References 6 publications

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“…The first important observation is that the fracture origin is always sub-surface, in disagreement with what is reported in literature [5]. Second, the LTC layer appears to have lower thickness than the nominal one (around 15 μm instead of 33 μm).…”

Section: Epj Web Of Conferencescontrasting

confidence: 79%

“…The theoretical stress concentration factors in these two cases were Kt=3.55 and Kt=6.50 respectively, as calculated by [5]. One half of these specimens were tested after solubilisation, while the remaining half part has been surface treated by LTC after machining (as said they were lathe machined or polished depending on the desired surface roughness).…”

Section: Methodsmentioning

confidence: 99%

“…In [1] Ceschini and Minak find a great improvement in the fatigue life of smooth specimens as a result of the LTC process. In order to use this improved fatigue behaviour for design purposes the effect of the presence of notches must be evaluated from point of view of the quality of the process and of the fatigue performances [4,5] and in this paper the aspects of notch sensitivity and the effect of the surface roughness are experimentally investigated.…”

Section: Introductionmentioning

confidence: 99%

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On the Notch Effect in Low Temperature Carburized Stainless Steel under Fatigue

Minak

2010

EPJ Web of Conferences

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Abstract. The present paper describes the fatigue behaviour of carburized notched AISI 316 austenitic stainless steel specimens. Rotary four point bending fatigue tests have been performed using carburized smooth specimens with two different values of surface rugosity and notched specimen with two different stress concentration factors Kt, of 3.55 and 6.50 and the effects of carburizing on fatigue strength and notch sensitivity were discussed. Results show a general improvement of the fatigue life due to the treatment for all the series with an apparent notch sensitivity lower than one in the case of blunt notches due to secondary effects that were singled out.

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Section: Epj Web Of Conferencescontrasting

confidence: 79%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the Notch Effect in Low Temperature Carburized Stainless Steel under Fatigue

Minak

2010

EPJ Web of Conferences

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“…It should be noted that the fatigue notch sensitivity q is variable with both K t and R. Since these selected data under R=−1 in refs. [14,27,[29][30][31][32][33][34][35][36][37][38][39][40][41][42] were measured with different K t , the q under the identical condition of K t =4 (Fig. 8) has to be calculated by the Kuhn-Hardrath equation [25]:…”

Section: Comparison Of Fatigue Notch Properties With Other Metallic Mmentioning

confidence: 99%

Weak fatigue notch sensitivity in a biomedical titanium alloy exhibiting nonlinear elasticity

et al. 2017

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It is well known that metallic materials exhibit worse fatigue damage tolerance as they behave stronger in strength and softer in modulus. This raises concern on the long term safety of the recently developed biomechanical compatible titanium alloys with high strength and low modulus. Here we demonstrate via a model alloy, Ti-24Nb-4Zr-8Sn in weight percent, that this group of multifunctional titanium alloys possessing nonlinear elastic deformation behavior is tolerant in fatigue notch damage. The results reveal that the alloy has a high strength-to-modulus (σ/E) ratio reaching 2% but its fatigue notch sensitivity (q) is low, which decreases linearly from 0.45 to 0.25 as stress concentration factor increases from 2 to 4. This exceeds significantly the typical relationship between σ/E and q of other metallic materials exhibiting linear elasticity. Furthermore, fatigue damage is characterized by an extremely deflected mountain-shape fracture surface, resulting in much longer and more tortuous crack growth path as compared to these linear elastic materials. The above phenomena can be explained by the nonlinear elasticity and its induced stress relief at the notch root in an adaptive manner of higher stress stronger relief. This finding provides a new strategy to balance high strength and good damage tolerance property of metallic materials.

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“…Untuk memenuhi kebutuhan tersebut, berbagai teknik rekayasa permukaan telah menjadi tujuan utama, karena hal tersebut dapat memperbaiki sifat mekanik material logam seperti kekuatan dan ketahanan aus [1]. Baja karbon rendah memiliki kekerasan yang sempurna, namun memiliki kekuatan yang rendah dan tidak tahan aus.…”

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Pengaruh Variasi Karbon Aktif dan Waktu Tahan Terhadap Kekerasan Material JIS G-3123 Menggunakan Metode Pack Carburizing

Sakura

Suheni

Iskandar

2017

R.E.M. (Rekayasa Energi Manufaktur) Jurnal

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ABSTRAKPerbaikan sifat mekanik dari material logam merupakan hal penting di dunia Industri. Sifat mekanik pada material yang paling banyak dibutuhkan di dunia Industri yaitu kekuatan dan ketahanan gesek. Proses Carburizing, merupakan proses pengerasan permukaan dengan penambahan unsur karbon pada permukaan material. Proses Carburizing pada baja JIS G-3123 dilakukan dengan metode Pack Carburizing dengan variasi berat karbon aktif 125 gram, 250 gram, dan 400 gram dengan waktu tahan selama 30 menit, 45 menit, dan 60 menit. Penelitian pengaruh variasi penambahan karbon aktif dan waktu tahan terhadap kekerasan pada material JIS G-3123 menggunakan metode Pack Carburizing, diperoleh nilai kekerasan tertinggi yaitu 463,550 kg/mm2 dengan berat karbon aktif 400 gram dan waktu tahan 30 menit. Semakin tinggi berat karbon aktif pada proses carburizing, maka nilai kekerasan material akan semakin tinggi pula, dengan waktu tahan yang paling rendah. Kata kunci: pack carburizing, kekerasan vickers, JIS G-3123, karbon aktif, waktu tahan. ABSTRACT

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Effect of carburizing on notch fatigue behaviour in AISI 316 austenitic stainless steel

Cited by 49 publications

References 6 publications

On the Notch Effect in Low Temperature Carburized Stainless Steel under Fatigue

On the Notch Effect in Low Temperature Carburized Stainless Steel under Fatigue

Weak fatigue notch sensitivity in a biomedical titanium alloy exhibiting nonlinear elasticity

Pengaruh Variasi Karbon Aktif dan Waktu Tahan Terhadap Kekerasan Material JIS G-3123 Menggunakan Metode Pack Carburizing

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