Tailoring thermal expansion of shape memory alloys through designed reorientation deformation

Li, Qiao; Onuki, Yusuke; Sun, Qingping

doi:10.1016/j.actamat.2021.117201

Cited by 16 publications

(4 citation statements)

References 79 publications

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“…Yang et al integrated the controllable deformation design with the shape memory function and prepared a smart-responsive bilayered hydrogel, which exhibited controllable deformation recovery performance and had excellent anti-fatigue properties [26]. Currently, most of the research on controlled deformation focuses on shape memory materials, mechanical metamaterials, and lattice structures [15,16,[26][27][28]. Some studies focus on structural properties, exploring the effects of material properties such as strength and modulus and geometrical parameters such as honeycomb wall thickness and height, and core shape, on the energy-absorbing characteristics [29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Additively Manufactured Bionic Corrugated Lightweight Honeycomb Structures with Controlled Deformation Load-Bearing Properties

Li,

Wang,

Kong

et al. 2024

Materials

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The rapid development of additive manufacturing (AM) has facilitated the creation of bionic lightweight, energy-absorbing structures, enabling the implementation of more sophisticated internal structural designs. For protective structures, the utilization of artificially controlled deformation patterns can effectively reduce uncertainties arising from random structural damage and enhance deformation stability. This paper proposed a bionic corrugated lightweight honeycomb structure with controllable deformation. The force on the onset state of deformation of the overall structure was investigated, and the possibility of controlled deformation in the homogeneous structure was compared with that in the corrugated structure. The corrugated structures exhibited a second load-bearing capacity wave peak, with the load-bearing capacity reaching 60.7% to 117.29% of the first load-bearing peak. The damage morphology of the corrugated structure still maintained relative integrity. In terms of energy absorption capacity, the corrugated lightweight structure has a much stronger energy absorption capacity than the homogeneous structure due to the second peak of the load carrying capacity. The findings of this study suggested that the combination of geometric customization and longitudinal corrugation through additive manufacturing offers a promising approach for the development of high-performance energy-absorbing structures.

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Section: Introductionmentioning

confidence: 99%

Additively Manufactured Bionic Corrugated Lightweight Honeycomb Structures with Controlled Deformation Load-Bearing Properties

Li,

Wang,

Kong

et al. 2024

Materials

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“…Owing to the inherently weak metallic bonds, viable strategies for directly reducing the CTE in iron alloys are limited. Generally, low thermal expansion (LTE) or even negative thermal expansion (NTE) can be found in intermetallic compounds or solid solution alloys [5][6][7][8][9][10][11] . However, achieving LTE and maintaining good mechanical properties in these metal-based compounds cannot be achieved simultaneously.…”

Section: Introductionmentioning

confidence: 99%

A general strategy to significantly reduce thermal expansion and achieve high mechanical properties in iron alloys

Chen,

Lu,

Zhou

et al. 2024

Preprint

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Iron alloys, including steel and magnetic functional materials, are widely used in capital construction, manufacturing, electromagnetic technology, etc. However, they face the long-standing challenge of high coefficient of thermal expansion (CTE), limiting the applications in high-precision fields. This work proposes a general strategy involving the in-situ formation of a nano-scale lamellar/labyrinthine negative thermal expansion (NTE) phase within the iron matrix to tackle this problem. For example, a model Fe alloy, Fe-Zr10-Nb6, was synthesized and its CTE is reduced to approximately half of the iron. Meanwhile, the alloy possesses an excellent strength-plasticity combination of 1.5 GPa (compressive strength) and 17.5% (ultimate strain), which outperforms other low thermal expansion (LTE) metallic materials. The magnetovolume effect of the NTE phase is deemed to counteract the positive thermal expansion in iron. The high stress-carrying hard NTE phase and the tough matrix synergistically contribute to the superior mechanical properties. The interaction between the slip of lamellar microstructure and the slip-hindering of labyrinthine microstructure further enhances the strength-plasticity combination. This work shows the promise of offering a universal method to produce LTE iron alloys with outstanding mechanical properties.

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“…to withstand required mechanical loads [22][23][24] ; (iii) isotropic ZTE performance (three-dimensional size stability). The anisotropic thermal expansion property will restrict the range of the material application 25,26 ; (iv) cyclic thermal stability, i.e., the structure and thermal expansion characteristics are stable in the process of resisting thermal shock, etc. Unfortunately, so far few materials could satisfy these requirements simultaneously.Since the thermal expansion is often coupled to magnetic interaction in metallic alloys, it is feasible to manipulate the coefficient of thermal expansion through chemical modifications.…”

mentioning

confidence: 99%

“…Recently, a series of dual-phase ZTE alloys with appropriate mechanical characteristics have been designed and prepared through eutectic reactions 38,39 , such as Ho-Fe 13 , Er-Fe-V-Mo 40 , La-Fe-Si 41,42 , etc. Alternatively, the microstructure of NiTi alloys 25,43 , and Mn 5-x Fe x Si 3 compounds 44 , is manipulated to tailor their two-dimensional (2D) ZTE performance. While the overall ZTE alloys are still suboptimal as they exhibit either strong anisotropic thermal expansion or a narrow ZTE temperature window.…”

mentioning

confidence: 99%

Superior zero thermal expansion dual-phase alloy via boron-migration mediated solid-state reaction

Yu,

Lin,

Chen

et al. 2023

Nat Commun

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Rapid progress in modern technologies demands zero thermal expansion (ZTE) materials with multi-property profiles to withstand harsh service conditions. Thus far, the majority of documented ZTE materials have shortcomings in different aspects that limit their practical utilization. Here, we report on a superior isotropic ZTE alloy with collective properties regarding wide operating temperature windows, high strength-stiffness, and cyclic thermal stability. A boron-migration-mediated solid-state reaction (BMSR) constructs a salient “plum pudding” structure in a dual-phase Er-Fe-B alloy, where the precursor ErFe10 phase reacts with the migrated boron and transforms into the target Er2Fe14B (pudding) and α-Fe phases (plum). The formation of such microstructure helps to eliminate apparent crystallographic texture, tailor and form isotropic ZTE, and simultaneously enhance the strength and toughness of the alloy. These findings suggest a promising design paradigm for comprehensive performance ZTE alloys.

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Tailoring thermal expansion of shape memory alloys through designed reorientation deformation

Cited by 16 publications

References 79 publications

Additively Manufactured Bionic Corrugated Lightweight Honeycomb Structures with Controlled Deformation Load-Bearing Properties

Additively Manufactured Bionic Corrugated Lightweight Honeycomb Structures with Controlled Deformation Load-Bearing Properties

A general strategy to significantly reduce thermal expansion and achieve high mechanical properties in iron alloys

Superior zero thermal expansion dual-phase alloy via boron-migration mediated solid-state reaction

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