A self-consistent plasticity theory for modeling the thermo-mechanical properties of irradiated FCC metallic polycrystals

Xiao, Xiazi; Song, Dingkun; Xue, Jianming; Chu, Hongling; Duan, Huiling

doi:10.1016/j.jmps.2015.01.011

Cited by 61 publications

(29 citation statements)

References 68 publications

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“…Crystal plasticity models have been developed to describe the mechanical behaviors of irradiated face-centered cubic (FCC) metals with and without NT structures. 101,102 Also, many theoretical models have been proposed to improve the fundamental understanding of the deformation mechanisms of NT metals, [103][104][105][106][107][108][109][110][111] some of which will be introduced in this review. In addition to the superior mechanical properties, it has also been reported that NT structures alter the electronic and optical properties of semiconductor nanowires.…”

Section: Introductionmentioning

confidence: 99%

Nanotwinned and hierarchical nanotwinned metals: a review of experimental, computational and theoretical efforts

Sun

2018

npj Comput Mater

134

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The recent studies on nanotwinned (NT) and hierarchical nanotwinned (HNT) face-centered cubic (FCC) metals are presented in this review. The HNT structures have been supposed as a kind of novel structure to bring about higher strength/ductility than NT counterparts in crystalline materials. We primarily focus on the recent developments of the experimental, atomistic and theoretical studies on the NT and HNT structures in the metallic materials. Some advanced bottom-up and top-down techniques for the fabrication of NT and HNT structures are introduced. The deformation induced HNT structures are available by virtue of severe plastic deformation (SPD) based techniques while the synthesis of growth HNT structures is so far almost unavailable. In addition, some representative molecular dynamics (MD) studies on the NT and HNT FCC metals unveil that the nanoscale effects such as twin spacing, grain size and plastic anisotropy greatly alter the performance of NT and HNT metals. The HNT structures may initiate unique phenomena in comparison with the NT ones. Furthermore, based on the phenomena and mechanisms revealed by experimental and MD simulation observations, a series of theoretical models have been proposed. They are effective to describe the mechanical behaviors of NT and HNT metals within the applicable scope. So far the development of manufacturing technologies of HNT structures, as well as the studies on the effects of HNT structures on the properties of metals are still in its infancy. Further exploration is required to promote the design of advanced materials.

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Section: Introductionmentioning

confidence: 99%

Nanotwinned and hierarchical nanotwinned metals: a review of experimental, computational and theoretical efforts

Sun

2018

npj Comput Mater

134

View full text Add to dashboard Cite

show abstract

“…dislocation loops and SFTs) for BCC and FCC systems, which can well predict the irradiation effects of hardening and plastic flow localization ( Barton et al, 2013;Xiao et al, 2015a). Recently, Xiao et al (2015b) proposed a self-consistent plasticity model for irradiated FCC polycrystals, in which the spatial-dependent interaction between dislocations and defects, and temperature effect on irradiation hardening were both considered. In fact, in order to study the mechanical behaviors of irradiated polycrystals with nanotwins, the following two aspects should be involved.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…(8) is a general model to consider the influences of TBs, irradiation-induced defects and dislocations on the mechanical behaviors of irradiated metals with nanotwins. If the effect of TBs (the first three terms) is not considered, the model can be used to study the behaviors of irradiated FCC metals without nanotwins as proposed by Xiao et al (2015b).…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%