X-Ray Diffraction Studies of Forward and Reverse Plastic Flow in Nanoscale Layers During Thermal Cycling

Gram, Michael; Carpenter, John S.; Payzant, E. Andrew; Misra, Amit; Anderson, Peter M.

doi:10.1080/21663831.2013.843602

Cited by 12 publications

(9 citation statements)

References 56 publications

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“…According to the above definition, the materials with the following structures can be classified as typical heterostructured materials [1]: heterogeneous lamella structures [3], gradient structures [26][27][28][29][30][31], laminate structures [16,[32][33][34][35][36][37][38][39][40][41][42][43][44][45], dual/multi-phase structures [46][47][48], harmonic (core-shell) structures [49][50][51], multimodal structures [52][53][54][55], etc. These materials have been reported to possess superior combinations of strength and ductility, which can be attributed to HDI strengthening and HDI strain hardening.…”

Section: Structural Heterostructured Materials-processing and Propertiesmentioning

confidence: 99%

“…Experiments by Gram et al [43] on Cu-Ni multilayer thin films provide evidence of hetero-induced strengthening and an assessment of the modeling concepts embodied in Figure 12 and Equations (1-4). Cu-21 nm/Ni-21 nm multilayer thin films produced by sputtering onto < 001 > Si substrates were subsequently heated and cooled while monitoring lattice parameters of the Cu and Ni phases using diffraction.…”

Section: Laminate Structured and Nanograined Metalsmentioning

confidence: 99%

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Heterostructured materials: superior properties from hetero-zone interaction

Zhu

Ameyama

Anderson

et al. 2020

Materials Research Letters

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667

135

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Heterostructured materials are an emerging class of materials with superior performances that are unattainable by their conventional homogeneous counterparts. They consist of heterogeneous zones with dramatic (> 100%) variations in mechanical and/or physical properties. The interaction in these hetero-zones produces a synergistic effect where the integrated property exceeds the prediction by the rule-of-mixtures. The heterostructured materials field explores heterostructures to control defect distributions, long-range internal stresses, and nonlinear inter-zone interactions for unprecedented performances. This paper is aimed to provide perspectives on this novel field, describe the state-of-the-art of heterostructured materials, and identify and discuss key issues that deserve additional studies. IMPACT STATEMENT This paper delineates heterostructured materials, which are emerging as a new class of materials with unprecedented properties, new materials science and economic industrial production.

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Section: Structural Heterostructured Materials-processing and Propertiesmentioning

confidence: 99%

Section: Laminate Structured and Nanograined Metalsmentioning

confidence: 99%

Heterostructured materials: superior properties from hetero-zone interaction

Zhu

Ameyama

Anderson

et al. 2020

Materials Research Letters

Self Cite

667

135

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“…The development of in situ X-ray/neutron diffraction techniques allow investigation of the stressstrain response of the composite and its constituent phases simultaneously [13][14][15][16][17][18][19][20]. By measuring the elastic strain in each phase, the stress partitioning between the constituent phases can be determined using…”

Section: Introductionmentioning

confidence: 99%

Phase-specific deformation behavior of a NiAl–Cr(Mo) lamellar composite under thermal and mechanical loads

Chen

et al. 2016

Journal of Alloys and Compounds

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Phase-specific thermal expansion behavior and mechanical deformation behavior of a directionally solidified NiAl-Cr(Mo) lamellar in situ composite were investigated by using real-time in situ neutron diffraction during compression at elevated temperatures up to 800 o C. Tensile and compressive thermal residual stresses were found to exist in the NiAl phase and Cr ss (solid solution) phase, respectively. Based on the evolution of lattice spacings and phase stresses, the phase-specific deformation behavior was analyzed qualitatively and quantitatively. Estimates of phase stresses were derived by Hooke"s law on the basis of a new method for the determination of stress-free lattice spacing in in situ composites. During compressive loading, the NiAl phase yields earlier than the Cr ss phase. The Cr ss phase carries much higher stress than the NiAl phase, and displays consistent strain hardening at all temperatures. The NiAl phase exhibits strain hardening at relatively low temperatures and softening at high temperatures. During unloading, the NiAl phase yields in tension whereas the Cr ss phase unloads elastically. In addition, post-test microstructural observations show phase-through cracks at room temperature, micro cracks along phase interfaces at 600 o C and intact lamellae kinks at 800 o C, which is assumed as the result of increasing deformability of both phases as temperature rises.

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“…According to the definition, heterostructured materials can be classified as materials with structures including, but not limited to, heterostructured lamella structure, [66,[70][71][72][73][74][75] gradient structure, [76][77][78][79][80][81][82] laminate structure, [83][84][85][86][87][88][89][90][91][92][93][94][95][96][97] dual/multi-phase structures, [98][99][100] harmonic (core-shell) structure, [101][102][103] multi-modal structure, [104][105][106][107] and heterostructured composite. [108] These microstructures are very diverse, but their superior mechanical properties are all rendered by the HDI strengthening and HDI strain hardening.…”

Section: Heterostructured Materials: Definition and Superior Propertiesmentioning

confidence: 99%

“…More details can be found in the original publications. [66,77,[79][80][81][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98][100][101][102][103][104][105][106][107][108]…”

Section: Processing Of Heterostructured Materialsmentioning

confidence: 99%

Introduction to Heterostructured Materials: A Fast Emerging Field

Zhu

2021

Metall Mater Trans A

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Strong and tough materials are desired for lightweight, energy efficient applications such as electric cars and aerospace applications. Recently, heterostructures are found to produce unprecedented strength and ductility that are considered impossible based on the materials science in our textbooks. Such superior mechanical properties are enabled by a new scientific principle: hetero-deformation-induced (HDI) strengthening and work hardening. Heterostructured (HS) materials consist of heterogeneous zones with dramatic difference (> 100 pct) in flow stresses. The inter-zone interaction produces back stress in the soft zones and forward stress in the hard zones, which collectively produces the HDI stress. HS materials possess a significant synergistic effect where the integrated property exceeds the prediction by the rule of mixtures. Importantly, HS materials can be produced by current industrial facilities at large scale and low cost. The new materials sciences and promising applications are driving the fast development of the HS materials as an emerging field. There are many fundamental issues that need to be probed so as to effectively design HS materials for superior properties. To solve these issues, it requires collaborative efforts by the communities of experimental materials science and computational material science and mechanics.

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X-Ray Diffraction Studies of Forward and Reverse Plastic Flow in Nanoscale Layers During Thermal Cycling

Cited by 12 publications

References 56 publications

Heterostructured materials: superior properties from hetero-zone interaction

Heterostructured materials: superior properties from hetero-zone interaction

Phase-specific deformation behavior of a NiAl–Cr(Mo) lamellar composite under thermal and mechanical loads

Introduction to Heterostructured Materials: A Fast Emerging Field

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