Influence of dynamic strain aging on the ductile tearing of C–Mn steels: modelling by a local approach method

Wagner, Danièle; Moreno, José-Maria Calderón; Prioul, C.; Frund, J.M.; Houssin, B.

doi:10.1016/s0022-3115(01)00746-2

Cited by 24 publications

(14 citation statements)

References 19 publications

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“…The crack growth resistance characteristics by the crack growth in the direction perpendicular to the rolling direction (LT) are higher as compared to that in the rolling direction (TL) (table 2). The inclusions are responsible for initiating and developing of failure, and they affect failure LT, crack growth in perpendicular direction to the rolling direction; TL, crack growth in parallel direction to the rolling direction in different planes differently [38]. Inclusions (sulphides) direct by rolling in rolling direction and this result in band microstructure, which was supported on steels DP and HR 45 by SEM.…”

Section: Resultsmentioning

confidence: 80%

“…In addition to the crack growth resistance characteristics were determined J-integral values for crack initiation -J 0.2 and J i . The J 0.2 , conventional crack initiation for 0.2 mm crack propagation [38], was also obtained (figure 7). The real state of crack initiation by experiments was impossible to determine; therefore, the J i was determined for observable crack initiation at recorded images.…”

Section: Resultsmentioning

confidence: 94%

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The crack growth resistance of thin steel sheets under eccentric tension

Ambriško

Pešek

2018

Sādhanā

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The stable crack growth in thin steel sheets is the topic of this paper. The crack opening was observed using a videoextensometry system, allowing the crack extension determination. J R-curve and d R-curve were established from obtained data. The ductile tearing properties of different thin sheets of steel were determined, including the impact of the specimen orientation, from test performed on compact tension specimens loaded under two conditions. The effect of the material, the rolling direction, and loading rate on the crack growth resistance of thin steel sheets was analyzed. In addition to the crack growth resistance, J-integral values for crack initiation were also estimated. The relation between J i and J 0.2 was assessed using the basic mathematical and statistical methods. This relation was described by a linear regression model.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 94%

The crack growth resistance of thin steel sheets under eccentric tension

Ambriško

Pešek

2018

Sādhanā

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“…The magnitude of this phenomenon depends on temperature, strain and strain rate. It is commonly observed in austenitic steels tested in the temperature range of 200-550°C [25][26][27] and in ferritic steels tested from 150 to 300°C [28]. This raises the question whether dynamic aging is linked to ferrite or to austenite.…”

Section: Discussionmentioning

confidence: 99%

“…This raises the question whether dynamic aging is linked to ferrite or to austenite. Dynamic strain aging in steel is characterized by an increase in strain hardening, a decrease in fracture strain and fracture toughness [28], but also by a decrease in strain rate sensitivity which can become negative [29]. Negative strain rate sensitivity leads to localized deformation and instability.…”

Section: Discussionmentioning

confidence: 99%

Damage and dynamic strain aging in a thermal aged cast duplex stainless steel

Calonne

Berdin

Saint-Germain

et al. 2004

Journal of Nuclear Materials

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“…If the plastic strain increments exist, the equivalent strain rate is set as _ ε = Δ ε p Δt , as addressed in Ref. [21]. Also, in nonlinear iteration of eq.…”

Section: Methods 2: a Simplified Implicit Methodsmentioning

confidence: 99%

Zircaloy Plate Rolling Simulation with an Effective Strain-Rate-Dependent Stress-Updating Algorithm

Kong

Yang

Ding

2016

International Journal of Nonlinear Sciences and Numerical Simulation

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Zircaloy is a kind of cladding material for monolithic nuclear fuel plates, which has a strong strain-ratedependent mechanical constitutive relation at the rolling temperature. In order to model the rolling process of monolithic nuclear fuel plates, it is critical to effectively define the mechanical properties of Zircaloy in the commercial finite element software. Different three-dimensional stress-updating algorithms are built, respectively, including a fully implicit algorithm, a simplified implicit one and an explicit one. The corresponding VUMAT subroutines suitable for explicit dynamic rolling simulation for a Zircaloy plate are developed, and the computation precision and efficiency are compared in ABAQUS. The simplified implicit stress-updating algorithm is determined to be the best choice. The effects of temperature, rolling velocity and reduction on the strain rate distribution, the deformation and rolling force are investigated.

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Influence of dynamic strain aging on the ductile tearing of C–Mn steels: modelling by a local approach method

Cited by 24 publications

References 19 publications

The crack growth resistance of thin steel sheets under eccentric tension

The crack growth resistance of thin steel sheets under eccentric tension

Damage and dynamic strain aging in a thermal aged cast duplex stainless steel

Zircaloy Plate Rolling Simulation with an Effective Strain-Rate-Dependent Stress-Updating Algorithm

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