Enhancement of low-cycle fatigue life of high-nitrogen austenitic stainless steel at low strain amplitude through ultrasonic shot peening

Kumar, Chandra Shekhar; Chattopadhyay, Kausik; Singh, Vakil; Mahobia, Girija Shankar

doi:10.1016/j.mtcomm.2020.101576

Cited by 13 publications

(12 citation statements)

References 36 publications

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“…An extensometer was mounted to record the induced strain at 5× 10-4 strain rate. Cylindrical fatigue samples were machined, as reported by Kumar et al (Kumar et al 2020). The samples' gauge section was polished on emery papers of different grit sizes and lastly by alumina suspension.…”

Section: Methodsmentioning

confidence: 99%

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Behavior of 316L Stainless Steel Under Static and Dynamic Loading Conditions

Kumar¹,

Mahobia²

2022

JER is an international, peer-reviewed journal that publishes f

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In the present study, 316L stainless steel was characterized for microstructure and mechanical behavior under static and dynamic loading conditions. It showed a high ratio of tensile strength to yield strength with good ductility. Experiments on strain controlled tests, performed at 0.25 Hz frequency, resulted in reduction of fatigue life with increasing total strain amplitude. At higher strain amplitudes, secondary cyclic hardening was noticed. In contrast, cyclic hardening was observed for initial few cycles followed by softening up to failure at lower strain amplitudes.

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Section: Methodsmentioning

confidence: 99%

“…LCF tests of 316L were conducted at various total strain amplitudes (Δεt/2) ranging from ± 0.30% -± 1.0%, at 0.25 Hz constant frequency, under fully reversed loading. The details of equipment used was given elsewhere (Kumar et al 2020). The strain was controlled by using an extensometer (Model: MTS 632.53F).…”

Section: Methodsmentioning

confidence: 99%

Behavior of 316L Stainless Steel Under Static and Dynamic Loading Conditions

Kumar¹,

Mahobia²

2022

JER is an international, peer-reviewed journal that publishes f

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“…Moreover, UIP technologies are widely used as a method to decrease stress concentration in weld toe and as a post welding treatment to enhance the strength and hardness of weld joints [ 39 ]. Table 2 represents the effect UIP process on mechanical and microstructural features on various engineering materials [ 87 , 88 , 89 , 90 , 91 ].…”

Section: Peening Techniquesmentioning

confidence: 99%

Peening Techniques for Surface Modification: Processes, Properties, and Applications

et al. 2021

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Surface modification methods have been applied to metals and alloys to change the surface integrity, obtain superior mechanical properties, and improve service life irrespective of the field of application. In this review paper, current state-of-the-art of peening techniques are demonstrated. More specifically, classical and advanced shot peening (SP), ultrasonic impact peening (UIP), and laser shock peening (LSP) have been discussed. The effect of these techniques on mechanical properties, such as hardness, wear resistance, fatigue life, surface roughness, and corrosion resistance of various metals and alloys, are discussed. This study also reports the comparisons, advantages, challenges, and potential applications of these processes.

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“…There are many surface modification techniques of implant materials that affect the surface properties [14][15][16][17]. Ultrasonic shot peening (USP) is one of them which was found to improve electrochemical corrosion and fatigue resistance of nickel-free grade steel significantly [18][19][20]. Nanostructured surface caused by USP has significantly large number of grain boundaries which provide high density of nucleation sites for oxide formation [21].…”

Section: Introductionmentioning

confidence: 99%

“…The quick formation of the uniform and highly protective oxide film on the surface of the USPed specimen enhanced its corrosion resistance. The improvement in the fatigue resistance of the steel, following USP, is mainly due to the delay in the process of crack initiation caused by nanostructured surface and imparted compressive residual stress [19]. A larger number of grain boundaries of the nanostructured surface inhibit the slip band formation [14].…”

Section: Introductionmentioning

confidence: 99%

High-manganese and nitrogen stabilized austenitic stainless steel (Fe–18Cr–22Mn–0.65N): a material with a bright future for orthopedic implant devices

Kumar

Singh²,

Poddar

et al. 2021

Biomed. Mater.

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The rationale behind the success of nickel free or with extremely low nickel austenitic high manganese and nitrogen stabilized stainless steels is adverse influences of nickel ion on human body. Replacement of nickel by nitrogen and manganese provides a stable microstructure and facilitates better biocompatibility in respect of the conventional 316L austenitic stainless steel (316L SS). In this investigation, biocompatibility of the high-manganese and nitrogen stabilized (Fe–18Cr–22Mn–0.65N) austenitic stainless steel was studied and found highly promising. In vitro cell culture and cell proliferation (MTT) assays were performed on this stainless steel and assessed in respect of the 316L SS. Both the steels exhibited similar cell growth behavior. Furthermore, an enhancement was observed in cell proliferation on the Fe–18Cr–22Mn–0.65N SS after surface modification by ultrasonic shot peening (USP). The mean percent proliferation of the MG-63 cells increased from ≈88% for Un-USP to 98% and 105% for USP 3–2 and USP 2–2 samples, respectively for 5 d of incubation. Interestingly, in vivo animal study performed in rabbits for 3 and 6 weeks showed callus formation and sign of union without any allergic reaction.

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Enhancement of low-cycle fatigue life of high-nitrogen austenitic stainless steel at low strain amplitude through ultrasonic shot peening

Cited by 13 publications

References 36 publications

Behavior of 316L Stainless Steel Under Static and Dynamic Loading Conditions

Behavior of 316L Stainless Steel Under Static and Dynamic Loading Conditions

Peening Techniques for Surface Modification: Processes, Properties, and Applications

High-manganese and nitrogen stabilized austenitic stainless steel (Fe–18Cr–22Mn–0.65N): a material with a bright future for orthopedic implant devices

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