Simulation and experimental characterization of VC precipitation and recovery stress formation in an FeMnSi-based shape memory alloy

Yang, Yajiao; Leinenbach, Christian; Shahverdi, Moslem

doi:10.1016/j.jallcom.2023.168856

Cited by 12 publications

(2 citation statements)

References 35 publications

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“…The crystallographic orientations (111), (220), and (311) are known for enhancing the stress-induced martensite reversion to austenite upon mechanical unloading [ 29 ], and for this reason, they are absent on the XRD patterns of the large majority of the specimens. Due to the accumulation of a large amount of dynamical deformation during the five DMA-SS-3PB cycles applied to each specimen, the formation of α’-bcc martensite was favored.…”

Section: Resultsmentioning

confidence: 99%

Heat Treatment and Dynamic Mechanical Analysis Strain Sweep Effects on the Phase Structure and Morphology of an Fe-28Mn-6Si-5Cr Shape Memory Alloy

Popa

Pricop

et al. 2023

Nanomaterials

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Fe-Mn-Si-based shape memory alloys (SMAs) have been extensively investigated since 1982 for various useful properties that enhance the development of different applications such as anti-seismic dampers for very tall buildings, pipe joints, or rail fasteners. In particular, the Fe-28Mn-6Si-5Cr (mass. %) alloy has been mainly used in vibration mitigation or self-adjustable axial displacement applications. Dynamic mechanical analysis (DMA), performed by strain sweeps (SS), enables the monitoring of the evolution of storage modulus and internal friction variations with increasing strain amplitudes at different constant frequencies and temperatures. Thus, applying dynamic bending with various frequencies and amplitudes that actually represents an isothermal mechanical treatment. In the present paper, an Fe-28Mn-6 Si-5Cr (mass. %) SMA was cast by ingot metallurgy, hot-rolled, and water quenched in order to obtain thermally induced martensite and avoid the occurrence of cooling cracks. The influence of the holding time, between 2 and 10 h, at 1050 °C and the effects of DMA-SS performed at three different frequencies were analyzed by a differential scanning calorimetry, an X-ray diffraction, and a scanning electron and atomic force microscopy. The effects of the holding time and mechanical treatment on the structure and morphology of martensite plates were corroborated with the results of the thermal analysis.

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Section: Resultsmentioning

confidence: 99%

Heat Treatment and Dynamic Mechanical Analysis Strain Sweep Effects on the Phase Structure and Morphology of an Fe-28Mn-6Si-5Cr Shape Memory Alloy

Popa

Pricop

et al. 2023

Nanomaterials

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“…Several efforts were developed to improve the shape memory effect in polycrystalline of Fe-Mn-Si based, such as employing special heat treatment (thermomechanical treatment, training, and ausforming) [3], modification of chemical composition by adding the element that can form finer precipitation (Nb, C, V, etc.) [6] and stabilize the austenite phase (Mn and Ni) [7]. Fawkhry [4] concluded that the grain size of polycrystalline SMA has two conflicting effects during the phase transformation process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hot Rolling and Solution Treatment on the Microstructure and Mechanical Properties of Fe-Mn-Si-Cr-Ni Shape Memory Alloy

Rohmah,

Sendouw,

Tanjung

et al. 2023

metal.

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Fe-14Mn-4Si-8Ni-11Cr SMA (shape memory alloy) was designed as a smart material because of its specific properties, which can memorize the original shape, so it has the potential to dampen vibration in seismic structures. Memory effect is triggered by SIM (stress-induced martensitic) transformation from γ-austenite to ε-martensite (hexagonal close-packed / HCP) structure, and it is recovered by heating after unloading. This study investigated the effect of hot rolling and solution treatment on the microstructure and its relationship with hardness and SME (shape memory effect) properties. The as cast of Fe-14Mn-4Si-8Ni-11Cr was hot rolled (900 and 1000 ℃) and solution treated (1000 and 1100 ℃). After the thermomechanical process, all microstructures consist of γ-FCC (face-centered cubic), the annealing twins, and a fine band of ε-martensite. The grain size of the γ-phase is 29.43, 41.96, 42.44, and 45.57 μm for samples B, C, D, and E, respectively. The higher the temperature of hot rolling and solution treatment applied, the larger the grain size obtained, indirectly reducing the hardness to 299.93 BHN and 286.52 BHN for samples D and E. The coarsened austenite grain, a lower number of annealing twins, and the pre-existing line band of ε-martensite are favorable to obtain the enormous recovery strain, up to 8.26% for sample E.

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Effects of Ti and Nb Additions on Microstructure and Shape Memory Effect of Fe-10Mn-6Si-4Ni-7Cr-0.3C Shape Memory Alloy

Abbas,

Hsu,

Naqvi

et al. 2024

JOM

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Simulation and experimental characterization of VC precipitation and recovery stress formation in an FeMnSi-based shape memory alloy

Cited by 12 publications

References 35 publications

Heat Treatment and Dynamic Mechanical Analysis Strain Sweep Effects on the Phase Structure and Morphology of an Fe-28Mn-6Si-5Cr Shape Memory Alloy

Heat Treatment and Dynamic Mechanical Analysis Strain Sweep Effects on the Phase Structure and Morphology of an Fe-28Mn-6Si-5Cr Shape Memory Alloy

Effect of Hot Rolling and Solution Treatment on the Microstructure and Mechanical Properties of Fe-Mn-Si-Cr-Ni Shape Memory Alloy

Effects of Ti and Nb Additions on Microstructure and Shape Memory Effect of Fe-10Mn-6Si-4Ni-7Cr-0.3C Shape Memory Alloy

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