Results 11 to 20 of about 48,906 (308)
Strong Strain Hardening in Nanocrystalline Nickel [PDF]
Physical Review Letters, 2009 Low strain hardening has hitherto been considered an intrinsic behavior for most nanocrystalline (NC) metals, due to their perceived inability to accumulate dislocations. In this Letter, we show strong strain hardening in NC nickel with a grain size of approximately 20 nm under large plastic strains.
X L, Wu, Y T, Zhu, Y G, Wei, Q, Wei
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On strain hardening mechanism in gradient nanostructures [PDF]
International Journal of Plasticity, 2017 AbstractExperiments have shown that a gradient design, in which grain size spans over four orders of magnitude, can make strong nanomaterials ductile. The enhanced ductility is attributed to the considerable strain hardening capability obtained in the gradient metals. A non-uniform deformation on the lateral sample surface is also observed.
Li, Jianjun +3 more
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Mechanical Behavior of 316L Stainless Steel after Strain Hardening [PDF]
MATEC Web of Conferences, 2017 The effects of strain hardening on the mechanical behavior of 316L stainless steel were studied in the paper. The original and different strain hardening materials were compared to investigate the mechanical behavior.
Li Kaishang, Peng Jian, Peng Jian
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Scalar-based strain gradient plasticity theory to model size-dependent kinematic hardening effects [PDF]
, 2021 A common belief in phenomenological strain gradient plasticity modeling is that including the gradient of scalar variables in the constitutive setting leads to size-dependent isotropic hardening, whereas the gradient of second-order tensors induces size ...
JEBAHI, Mohamed +3 more
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Investigation of advanced strain-path dependent material models for sheet metal forming simulations [PDF]
, 2006 Sheet metal forming processes often involve complex loading sequences. To improve the prediction of some undesirable phenomena, such as springback, physical behavior models should be considered.
BALAN, Tudor +5 more
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Nuclear Engineering and Technology, 2022 The effect of the material hardening model of the canister on a finite element vertical cask drop simulation is investigated for the strain-based acceptance evaluation.
Hune-Tae Kim +5 more
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Strain Hardening at Large Strains [PDF]
, 1989 The strain hardening properties of various fcc metals have been investigated at large strains by means of torsion tests of short thin-walled cylinders. The results show that Stage IV occurs in all cases provided that a low enough test temperature is used; it is a nearly constant hardening rate of 2.10/sup /minus/4/ G in terms of resolved flow stress ...
Rollett, A. D. +4 more
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Ellipticity loss analysis for tangent moduli deduced from a large strain elastic–plastic self-consistent model [PDF]
, 2009 In order to investigate the impact of microstructures and deformation mechanisms on the ductility of materials, the criterion first proposed by Rice is applied to elastic–plastic tangent moduli derived from a large strain micromechanical model combined ...
LORRAIN, Jean-Paul +5 more
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Strain Rate Dependence of Hardness for PE and SME TiNi Alloys
Metals, 2020 In this paper, the strain rate dependence of hardening behavior of polycrystalline pseudoelastic (PE) and shape memory effect (SME) TiNi alloy under impact loading was investigated by experiments.
Lingyan Shen, Mengmeng Hui, Yonggui Liu
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Back stress strengthening and strain hardening in gradient structure [PDF]
, 2016 We report significant back stress strengthening and strain hardening in gradient structured (GS) interstitial-free (IF) steel. Back stress is long-range stress caused by the pileup of geometrically necessary dislocations (GNDs).
Pan Y +5 more
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