Microstructure-based multiscale and heterogeneous elasto-plastic properties of 2205 duplex stainless steel welded joints: Experimental and modeling

Dong, Zhongqi; Xie, Xuefang; Jiang, Wenchun; Wan, Yu; Zhai, Xiangnan; Zhao, Xu

doi:10.1016/j.ijplas.2022.103474

Cited by 17 publications

(2 citation statements)

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“…The stress caused by interstitial atoms, such as

and

atoms, is addressed using the simplified assumption that the increase in strength is proportional to the composition of solid solution atoms to the power of 1/2 [ 9 , 10 , 43 , 44 ], as follows:

where

and

are the strengthening coefficient of the various solution atoms.…”

Section: Multiscale Constitutive Modelingmentioning

confidence: 99%

“…Barrett et al [ 9 ] developed a physically based high-temperature yield strength model of 9Cr steels and investigated the effect of various strength mechanisms on yield strength. Dong et al [ 10 ] studied the heterogeneous elastic–plastic properties of 2205 duplex stainless steel welded joints based on the microstructure-based multiscale model. This model is developed by combining a physical mechanism and a crystal plastic model.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure-Based Multiscale Modeling of Deformation in MarBN Steel under Uniaxial Tension: Experiments and Finite Element Simulations

Zhang

Zou

et al. 2023

Materials

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In the current work, a multiscale model was developed coupling a macro-model with the macromechanical physically based yield strength and a crystal plasticity model with micromechanical properties and realistic grain orientation based on the representative volume element. The simulation results show that the effect of microstructure on the macromechanical properties can be considered in the macro constitutive model due to a good consistency between experimental and computed results; whereas solid strengthening, grain boundaries, and dislocation density played a more crucial role than others. Besides coupling simulation and microstructure by EBSD, the microstructure evolution can be well explained by the micromechanical model. Strain is related to the grain orientation, leading to inhomogeneous deformation, forming the various Schmid factor and slip systems. A plastic strain occurs close to the grain boundaries and declines into the grain, resulting in higher kernel average misorientation (KAM) and geometry necessary dislocations (GNDs) in the grain boundaries. The higher the loading, the higher the local strain. Shear bands with around 45 degrees can be formed, resulting in crack initiation and tensile shear failure. This work has developed the guidance of structural integrity assessment and prediction of mechanical properties for the engineering material and components.

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“…The stress caused by interstitial atoms, such as

and

atoms, is addressed using the simplified assumption that the increase in strength is proportional to the composition of solid solution atoms to the power of 1/2 [ 9 , 10 , 43 , 44 ], as follows:

where

and

are the strengthening coefficient of the various solution atoms.…”

Section: Multiscale Constitutive Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%