On the factors influencing the elastoplastic cyclic response and low cycle fatigue failure of AISI 316L steel produced by laser-powder bed fusion

Pelegatti, Marco; Benasciutti, Denis; Bona, Francesco De; Lanzutti, A.; Magnan, M.; Novak, Jelena Srnec; Salvati, Enrico; Sordetti, Francesco; Sortino, Marco; Totis, Giovanni; Vaglio, Emanuele

doi:10.1016/j.ijfatigue.2022.107224

Cited by 16 publications

(10 citation statements)

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“…LCF results and experimental dataset are the same as those reported in an authors' previous work, 31 which constitutes a companion study of the present article. For the sake of clarity, the main aspects related to the analyzed material are briefly summarized in the following.…”

Section: Materials and Experimental Setupmentioning

confidence: 58%

“…Examples of stress-strain cycles recorded at strain amplitudes 0.3%, 0.6%, and 1.2% are depicted in Figure 1A. It is worth reminding from the authors' previous work 31 that, for each strain amplitude tested, the L-PBF AISI 316L steel exhibits a very brief hardening behavior followed by a continuous cyclic softening until final failure, as shown in Figure 1B. As no material stabilized state is clearly visible, the stress-strain cycles at half-life are conventionally assumed to represent the stabilized state.…”

Section: Materials and Experimental Setupmentioning

confidence: 86%

“…For the sake of clarity, the main aspects related to the analyzed material are briefly summarized in the following. Cylindrical rods of AISI 316L stainless steel were vertically produced by L‐PBF (Concept Laser M2 Cusing machine) using the process parameters fully given in Pelegatti et al 31 The “island” scanning strategy was adopted to melt the powder in each layer, with a 90° rotation and 1 mm shift between successive layers. Before the removal from the building platform, a stress relief treatment at a temperature of 550°C for 6 h was performed on the rods.…”

Section: Materials and Experimental Setupmentioning

confidence: 99%

“…In the authors' previous study, 31 the experimental strain amplitude‐life data were used to estimate the Manson–Coffin model 48 :

ε_{a} goodbreak= ε_{italicel, a} goodbreak+ ε_{italicpl, a} goodbreak= \frac{{σ_{f}}^{'}}{E} {(2 N_{f})}^{b^{'}} goodbreak+ {ε_{f}}^{'} {(2 N_{f})}^{c^{'}}

where

ε_{italicel, a}

and

ε_{italicpl, a}

are the elastic and plastic strain amplitudes. In Equation (13), the elastic part is ruled by the fatigue strength coefficient

{σ_{f}}^{'}

and exponent

b^{'}

and the plastic part by the fatigue ductility coefficient

{ε_{f}}^{'}

and exponent

c^{'}

.…”

Section: Strain–life Curve: Manson–coffin Model and Some Practical Ap...mentioning

confidence: 99%

“…In the authors' previous study, 31 the experimental strain amplitude-life data were used to estimate the Manson-Coffin model 48 :…”

Section: Strain-life Curve: Manson-coffin Model and Some Practical Ap...mentioning

confidence: 99%

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Strain‐controlled fatigue loading of an additively manufactured AISI 316L steel: Cyclic plasticity model and strain–life curve with a comparison to the wrought material

Pelegatti

Benasciutti

Bona

et al. 2023

Fatigue Fract Eng Mat Struct

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Low cycle fatigue (LCF) regime was experimentally studied for a 316L steel additively manufactured by laser‐powder bed fusion (L‐PBF), a material widely used in sectors that require a reliable durability analysis. Material cyclic elastoplastic behavior is described by the Chaboche–Voce combined plasticity model, which displayed a great degree of accuracy. The fatigue life was modeled by both invoking the Manson–Coffin curve and other simplified models derived from static properties of the material; some of which showed remarkably good accuracy. A quantitative comparison with a wrought‐processed 316L steel displayed a markedly different cyclic elastoplastic response but comparable fatigue strengths.

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Section: Materials and Experimental Setupmentioning

confidence: 58%

Section: Materials and Experimental Setupmentioning

confidence: 86%

Section: Materials and Experimental Setupmentioning

confidence: 99%

“…In the authors' previous study, 31 the experimental strain amplitude‐life data were used to estimate the Manson–Coffin model 48 :