Single and multi-step phase transformation in CuZr nanowire under compressive/tensile loading

Sutrakar, Vijay Kumar; Mahapatra, D. Roy

doi:10.1016/j.intermet.2009.11.006

Cited by 49 publications

(17 citation statements)

References 38 publications

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“…Phase transformation happened accompanied with more than 30% contraction strain when the size was reduced to 1.83 nm × 1.83 nm; the structure transformed from a FCC to a BCT structure, attributed to surface induced reorientation. Such surface induced analogous phenomena have been observed widely in many metallic NWs, such as Au [74,78,79], NiAl [80], Ag [81], Pd [82], Fe [83], Cu-Zr [84,85], and Cu [48,86].…”

Section: Pseudoelasticity Through Phase Transformations and Reorientamentioning

confidence: 59%

In SituAtomistic Deformation Mechanisms Study of Nanowires

Yue

Gong

Zhang

2016

Journal of Nanomaterials

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Smaller is stronger," sub-, micro-, and nanomaterials exhibit high strength, ultralarge elasticity and unusual plastic and fracture behaviors which originate from their size effect and the low density of defects, different from their conventional bulk counterparts. To understand the structural evolution process under external stress at atomic scale is crucial for us to reveal the essence of these "unusual" phenomena and is momentous in the design of new materials. Our review presents the recent developments in the methods, techniques, instrumentation, and scientific progress of atomic scale in situ deformation dynamics on single crystalline nanowires. The super-large elasticity, plastic deformation mechanism transmission, and unusual fracture behavior related to the experimental mechanics of nanomaterials are reviewed. In situ experimental mechanics at the atomic scale open a new research field which is important not only to the microscopic methodology but also to the practice.

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Section: Pseudoelasticity Through Phase Transformations and Reorientamentioning

confidence: 59%

In SituAtomistic Deformation Mechanisms Study of Nanowires

Yue

Gong

Zhang

2016

Journal of Nanomaterials

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“…The B2-bct phase transformation controlled pseudo-elastic behavior has also been observed from Cu-Zr alloy nanowires [91,94].…”

Section: Pseudo-elasticity In Alloy Nanowiresmentioning

confidence: 68%

“…Hence, surface effects are dominant factors affecting the structure of nanowires and can even induce thorough structural transition. On the heels of these discoveries, other interesting materials properties such as surfaceinduced lattice reorientation, martensitic phase transformation (MT), pseudo-elastic behavior, and shape memory effects (SMEs) have been studied and observed from fcc [14,[19][20][21][22][23]28,[63][64][65][66][67][68][69][70][71][72][73][74][75], bcc [76][77][78][79][80][81][82], and hcp [83,84] single-element, layered composite [85][86][87][88][89], intermetallic alloy [90][91][92][93][94][95], and even metal oxide [96][97][98][99][100] or nitride [101] compound nanowires. The reversible strain can be as high as 40-70% and is much lar...…”

Section: Size-dependent Structural Stability Of Nanomaterialsmentioning

confidence: 99%

Surface-induced structural transformation in nanowires

Chu

2013

Materials Science and Engineering: R: Reports

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“…15 Moreover, MD simulations have also revealed a stress-induced martensitic transformation in case of B2 CuZr nanowires. [16][17][18] In line with these preliminary MD results, it is interesting to analyze how the stress-induced martensitic transformation affects the mechanical properties of the composite material reinforced with shape memory crystals.…”

mentioning

confidence: 83%

“…Similar two-step phase transformation in B2 CuZr nanowires under tensile loading was reported in the literature. 18 Based on these results, an interesting question arises: how strong the stress-induced phase transformation affects the plasticity of BMG composite? In order to answer the question, we have constructed another composite with the same number and type of nanowires but with a different spatial distribution.…”

mentioning

confidence: 99%

Deformation behavior of metallic glass composites reinforced with shape memory nanowires studied via molecular dynamics simulations

Şopu

Stoica

Eckert

2015

Applied Physics Letters

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Molecular dynamics simulations indicate that the deformation behavior and mechanism of Cu64Zr36 composite structures reinforced with B2 CuZr nanowires are strongly influenced by the martensitic phase transformation and distribution of these crystalline precipitates. When nanowires are distributed in the glassy matrix along the deformation direction, a two-steps stress-induced martensitic phase transformation is observed. Since the martensitic transformation is driven by the elastic energy release, the strain localization behavior in the glassy matrix is strongly affected. Therefore, the composite materials reinforced with a crystalline phase, which shows stress-induced martensitic transformation, represent a route for controlling the properties of glassy materials.

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Single and multi-step phase transformation in CuZr nanowire under compressive/tensile loading

Cited by 49 publications

References 38 publications

In SituAtomistic Deformation Mechanisms Study of Nanowires

In SituAtomistic Deformation Mechanisms Study of Nanowires

Surface-induced structural transformation in nanowires

Deformation behavior of metallic glass composites reinforced with shape memory nanowires studied via molecular dynamics simulations

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