International Journal of Plasticity
Papers 3,217
1 page of 322 pages (3,217 results)
#1Yingbin Chen (ZJU: Zhejiang University)H-Index: 2
#2Shuchun Zhao (ZJU: Zhejiang University)H-Index: 3
Last. Jiangwei Wang (ZJU: Zhejiang University)H-Index: 30
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Abstract null null The formation of multifold twins in nanocrystalline face-centered-cubic metals and alloys were frequently ascribed to a grain boundary (GB) mediated process. However, the geometrical requirement for the formation of multifold twins remains largely unclear. In this work, using combined in situ nanomechanical testing and atomistic simulation, we show that multifold twins can be generated through the migration of GBs associated with intersecting twin boundaries (TBs). We systemat...
#1Matti LindroosH-Index: 22
#2Tatu PinomaaH-Index: 7
Last. Samuel Forest (ENSMP: Mines ParisTech)H-Index: 63
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Abstract null null A coupled phase field and crystal plasticity model is established to analyze formation of dislocation structures and residual stresses during rapid solidification of additively manufactured 316L stainless steel. The work focuses on investigating the role of microsegregation related to the intra-grain cellular microstructure of 316L. Effect of solidification shrinkage is considered along with dislocation mediated plastic flow of the material during solidification. Different cel...
#1Qifan Bao (HUST: Huazhong University of Science and Technology)
#2Minsheng Huang (HUST: Huazhong University of Science and Technology)H-Index: 17
Last. Zhenhuan Li (HUST: Huazhong University of Science and Technology)H-Index: 22
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Abstract null null The interaction between a high speed edge dislocation and a microvoid has been investigated by molecular dynamics (MD) simulations in BCC crystals of Ta, Fe, V and W in the present work. The focus is placed on the dynamic effect on the dislocation-microvoid interaction. Three interaction scenarios different from static cases, i.e., repeated dislocation oscillations around microvoids, dislocation depinning from microvoid like releasing an elastic slingshot, and formation of abn...
#1Le Li (Kyoto University)
#2Zhenghao Chen (Kyoto University)H-Index: 1
Last. Easo P George (ORNL: Oak Ridge National Laboratory)H-Index: 75
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Abstract null null The equiatomic Cr-Co-Ni medium-entropy alloy has the face-centered cubic (FCC) structure. Bulk single crystals of this alloy were grown and tested in tension and compression between 14 K and 1373 K with the loading axis parallel to [ null null null 1 null ¯ null null null 23]. At room temperature, the critical resolved shear stress (CRSS) for {111} null null null 1 null ¯ null null null 0> slip is 65 ± 5 MPa and does not exhibit a tension-compression asymmetry. It does, howeve...
#1Shaolou Wei (MIT: Massachusetts Institute of Technology)H-Index: 14
#2Jinwoo Kim (MIT: Massachusetts Institute of Technology)H-Index: 9
Last. Cemal Cem Tasan (MIT: Massachusetts Institute of Technology)H-Index: 39
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Abstract null null As one of the representative characteristics of plastic deformation, microstructural plastic strain inhomogeneity has triggered a broad interest in uncovering the corresponding deformation micro-mechanisms. (α+β) titanium alloys enable fruitful mechanistic explorations of this dependency, since: (i) the plastic anisotropy of the α-phase drives distinctive dislocation gliding and/or mechanical twinning modes for plastic strain accommodation; and (ii) deformation transferability...
#2Ang Li (Xi'an Jiaotong University)H-Index: 2
Last. Liu Mabao (Xi'an Jiaotong University)H-Index: 7
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Abstract null null Interfacial microstructure characteristics (e.g., volume fraction, thickness, moduli) are crucial to the overall mechanical properties of graphene/metal nanocomposites. Herein, we investigate the effects of different interfacial characteristics on simultaneous improvement of strength and plasticity of nanocomposites. Graphene nanoplatelets (GNPs) reinforced Ti6Al4V composites with appropriate interfacial effects are first fabricated based on powder metallurgy. Combining the in...
#1Saeed Forghani (TMU: Tarbiat Modares University)
#2Naser Khaji (Hiroshima University)H-Index: 19
Abstract null null Coupled Atomistic/Discrete Dislocation (CADD) is one of the most well-established multi-scale simulation methods. The most important challenge of the multi-scale methods is the effect of spurious forces. One of the most essential factors influencing this error is the inaccurate isotropic displacement fields generated by the dislocation segments in the discrete dislocation dynamics (DDD) domain. In this research, two anisotropic displacement fields are proposed and implemented ...
#1Jin-Kyung Kim (Hanyang University)H-Index: 21
#2Ji Hoon Kim (POSTECH: Pohang University of Science and Technology)H-Index: 3
Last. Jongryoul Kim (Hanyang University)H-Index: 21
view all 9 authors...
Abstract null null The FCC Fe40Mn40Co10Cr10 (at. %) high entropy alloy exhibits deformation twinning for room temperature deformation and deformation-induced HCP transformation for subzero deformation. Since the systematic investigation of temperature-dependent dislocation structures is not available, we present an in-depth characterization of the defects involved in deformation at room temperature (298 K) and subzero temperature (223 K) of the cold-rolled and annealed Fe40Mn40Co10Cr10 alloy. Th...
#1Fatemeh Azhari (UNSW: University of New South Wales)H-Index: 7
#2Chris WallbrinkH-Index: 5
Last. G. B. Schaffer (University of Melbourne)H-Index: 35
view all 8 authors...
Abstract null null A multiscale finite element model integrating microstructure statistics with an enhanced three-dimensional (3D) crystal plasticity model including damage has been developed to predict the complete tensile stress-strain response of Ti-6Al-4V manufactured by selective laser melting. A statistically equivalent representative volume element (SERVE) was constructed from an orthogonal set of electron backscatter diffraction (EBSD) images capturing key statistical information such as...
#1M. WrońskiH-Index: 12
#2M. Arul KumarH-Index: 16
Last. Carlos N. ToméH-Index: 80
view all 5 authors...
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