In situ synchrotron high-energy X-ray diffraction study of microscopic deformation behavior of a hard-soft dual phase composite containing phase transforming matrix

Zhang, Junsong; Hao, Shijie; Jiang, Daqiang; Huan, Yong; Cui, Lishan; Liu, Yinong; Yang, Hong; Ren, Yang

doi:10.1016/j.actamat.2017.03.052

Cited by 53 publications

(21 citation statements)

References 43 publications

(38 reference statements)

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“…S5(b) 12,13,[19][20][21][22][23][24][25][26] . Furthermore, the maximum elastic strain of Ti 3 Sn achieved in our B2-NiTi(Fe) dislocation slip matrix is comparable to that achieved in the B19'-NiTi phase transforming matrix 15 . A high lattice elastic strain implies high elastic stress.…”

Section: Resultssupporting

confidence: 68%

“…It is also evident that the elastic lattice strains are different between B2-NiTi(Fe) and Ti 3 Sn. This is apparently related to load partition between the more compliant NiTi(Fe) matrix and the stiffer Ti 3 Sn inclusions. , …”

Section: Resultsmentioning

confidence: 99%

“…The achievement is attributed to the martensitic phase transforming matrix 14 . This breakthrough is enabled by a novel concept of lattice strain matching between the uniform ultra-large elastic strains (4~7%) of the nanoinclusions and the uniform lattice distortion (~7%) of the martensitic phase transformation in the matrix 14,15 . This concept is schematically illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The achievement is attributed to the martensitic phase transforming matrix . This breakthrough is enabled by a novel concept of lattice strain matching between the uniform ultralarge elastic strains (4–7%) of the nanoinclusions and the uniform lattice distortion (∼7%) of the martensitic phase transformation in the matrix. , This concept is schematically illustrated in Figure a. The schematic depicts a situation when the composite is deformed to 3% global strain at which point the phase transforming matrix is partially stress-induced into martensite.…”

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confidence: 99%

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Dual Phase Synergy Enabled Large Elastic Strains of Nanoinclusions in a Dislocation Slip Matrix Composite

et al. 2018

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Freestanding nanomaterials (such as nanowires, nanoribbons, and nanotubes) are known to exhibit ultralarge elastic strains and ultrahigh strengths. However, harnessing their superior intrinsic mechanical properties in bulk composites has proven to be difficult. A recent breakthrough has overcome this difficulty by using a martensitic phase transforming matrix in which ultralarge elastic strains approaching the theoretical limit is achieved in Nb nanowires embedded in the matrix. This discovery, breaking a long-standing challenge, still limits our ability of harnessing the exceptional properties of nanomaterials and developing ultrahigh strength bulk materials to a narrow selection of phase transforming alloy matrices. In this study, we investigated the possibility to harness the intrinsic mechanical properties of nanoinclusions in conventional dislocation slip matrix based on a principle of synergy between the inclusion and the matrix. The small spacing between the densely populated hard and dislocation-impenetrable nanoinclusions departmentalize the plastic matrix into small domains to effectively impede dislocation motion within the matrix, inducing significant strengthening and large local elastic strains of the matrix, which in turn induced large elastic strains in the nanoinclusions. This dual phase synergy is verified in a TiSn inclusions/B2-NiTi(Fe) plastic matrix model materials system. The maximum elastic strain of TiSn inclusion obtained in the dislocation slip matrix is comparable to that achieved in a phase transforming matrix. This finding opens new opportunities for the development of high-strength nanocomposites.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Dual Phase Synergy Enabled Large Elastic Strains of Nanoinclusions in a Dislocation Slip Matrix Composite

et al. 2018

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“…With the proof of the concept, the design has been trialed in other NiTi‐X nanocomposite systems of different nanoinclusion morphologies other than nanowires, including nanoparticles, nanoribbons, nanolamellae, and multilayers. Figure shows an example in a NiTi–Nb nanoribbon composite .…”

Section: Other Phase Transforming–nanoinclusion Composite Systemsmentioning

confidence: 99%

“Lattice Strain Matching”‐Enabled Nanocomposite Design to Harness the Exceptional Mechanical Properties of Nanomaterials in Bulk Forms

et al. 2019

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Nanosized materials are known to have the ability to withstand ultralarge elastic strains (4–10%) and to have ultrahigh strengths approaching their theoretical limits. However, it is a long‐standing challenge to harnessing their exceptional intrinsic mechanical properties in bulk forms. This is commonly known as “the valley of death” in nanocomposite design. In 2013, a breakthrough was made to overcome this challenge by using a martensitic phase transforming matrix to create a composite in which ultralarge elastic lattice strains up to 6.7% are achieved in Nb nanoribbons embedded in it. This breakthrough was enabled by a novel concept of phase transformation assisted lattice strain matching between the uniform ultralarge elastic strains (4–10%) of nanomaterials and the uniform crystallographic lattice distortion strains (4–10%) of the martensitic phase transformation of the matrix. This novel concept has opened new opportunities for developing materials of exceptional mechanical properties or enhanced functional properties that are not possible before. The work in progress in this research over the past six years is reported.

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Brief Overview of Functionally Graded NiTi‐Based Shape Memory Alloys

et al. 2023

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Shape memory alloys (SMAs) are kinds of smart materials that have superior properties such as shape memory effect and superelasticity, which have the most potential applications in various fields, especially in aerospace, naval, automobile and biomedicine industries, etc. Nevertheless, the inherent natures of shape memory alloys are characterized by the smaller transformation temperature intervals and transformation stress intervals, which make the devices have poor control ability. To achieve the accurate controllability for progressive movement, creating functionally graded shape memory alloys has been adopted. Herein, the classification, fabrications, microstructural features, and performances of functionally graded shape memory alloys are reviewed. For comparison, the creation of various gradients in shape memory alloys can widen the transformation temperature intervals and transformation stress intervals to some extent. In addition, the formation of the compositional, microstructural, or geometrical gradient also contributes to the generation of excellent performances such as the four‐way shape memory effect, higher strength, and larger temperature window for the stress‐assisted two‐way shape memory effect, etc. Such superior functions promote a wider application range of shape memory alloys.

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In situ synchrotron high-energy X-ray diffraction study of microscopic deformation behavior of a hard-soft dual phase composite containing phase transforming matrix

Cited by 53 publications

References 43 publications

Dual Phase Synergy Enabled Large Elastic Strains of Nanoinclusions in a Dislocation Slip Matrix Composite

Dual Phase Synergy Enabled Large Elastic Strains of Nanoinclusions in a Dislocation Slip Matrix Composite

“Lattice Strain Matching”‐Enabled Nanocomposite Design to Harness the Exceptional Mechanical Properties of Nanomaterials in Bulk Forms

Brief Overview of Functionally Graded NiTi‐Based Shape Memory Alloys

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