Influence of thermomechanical treatment on the shape memory effect and pseudoelasticity behavior of conventional and additive manufactured Fe–Mn–Si–Cr–Ni-(V,C) shape memory alloys

Mohri, Maryam; Ferretto, Irene; Khodaverdi, Hesamodin; Leinenbach, Christian; Ghafoori, Elyas

doi:10.1016/j.jmrt.2023.04.195

Cited by 29 publications

(5 citation statements)

References 56 publications

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“…In addition, AMed samples display a higher SME compared to conventionally manufactured alloys with the same composition [45]. Moreover, the influence of thermomechanical treatment on SME and PE of AMed Fe-SMA was studied, and results show that although thermomechanical training led to improved PE, it reduced the SME (Figure 12) [11]. Fe-SMA walls have recently been fabricated using wire arc additive manufacturing (WAAM) (Figure 13).…”

Section: Additive Manufacturing Of Fe-smamentioning

confidence: 99%

“…A thermomechanical treatment involving deformation at room temperature and subsequent annealing has been found to enhance the SME and PE of Fe-Mn-Si-based alloys. The treatment decreases the number of thermal twins and develops a specific texture in the austenite phase, resulting in an increased PE strain [10,11]. Figure 1 illustrates the relationship between PE strain and σy0.1% (yield strength at 0.1% plastic strain) as a function of the number of thermomechanical cycles (N) for Fe-SMA sample after aging and thermomechanical treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 12Recovery strain as a function of temperature after 4% strain for conventional and additive manufactured samples; AC: As-received conventional, AB: As-built additive manufactured, HC: Heat-treated conventional, THC: Trained heat-treated conventional, HA: Heattreated additive manufactured, THA: Trained heat treated additive manufactured samples[11].…”

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confidence: 99%

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Memory‐Steel for Smart Steel Structures: A Review on Recent Developments and Applications

Wang,

Mohri,

et al. 2023

ce papers

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This study reviews the recent works on the development and application of iron‐based shape memory alloy (Fe‐SMA), the so‐called memory‐steel, for steel structures. First, the studies on the material properties of Fe‐SMA in terms of shape memory effect and superelasticity are discussed. Next, the use of Fe‐SMA in prestressed strengthening of steel structures is explained, including the applications in strengthening of steel girders, connections, and fatigue crack repairs. Various strengthening solutions such as using mechanically anchored or adhesively‐bonded Fe‐SMA, as well as the studies on the behavior of the Fe‐SMA‐to‐steel bonded joints, are discussed. The use and application of Fe‐SMA for strengthening of a 113‐years steel bridge has been explained. In addition, studies on the innovative application of the Fe‐SMA as pipe couplers are presented. At the end, innovative ongoing research on the additive manufacturing of architected Fe‐SMA (4D‐printing) are discussed.

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Section: Additive Manufacturing Of Fe-smamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Memory‐Steel for Smart Steel Structures: A Review on Recent Developments and Applications

Wang,

Mohri,

et al. 2023

ce papers

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“…Additionally, a uniform distance between the centers of the applied tracks was chosen as 100 µm. In [155], the impact of heat treatment and thermomechanical training on both conventional and additively manufactured FeMnSi-based shape memory alloys was studied. Additive manufacturing samples were produced using a LPBF machine equipped with a 1070 nm fiber laser and a spot size of 55 µm.…”

Section: Shape Change Manipulation Using Laser Processingmentioning

confidence: 99%

Fabrication of Smart Materials Using Laser Processing: Analysis and Prospects

Murzin,

Stiglbrunner

2023

Applied Sciences

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Laser processing is a versatile tool that enhances smart materials for diverse industries, allowing precise changes in material properties and customization of surface characteristics. It drives the development of smart materials with adaptive properties through laser modification, utilizing photothermal reactions and functional additives for meticulous control. These laser-processed smart materials form the foundation of 4D printing that enables dynamic shape changes depending on external influences, with significant potential in the aerospace, robotics, health care, electronics, and automotive sectors, thus fostering innovation. Laser processing also advances photonics and optoelectronics, facilitating precise control over optical properties and promoting responsive device development for various applications. The application of computer-generated diffractive optical elements (DOEs) enhances laser precision, allowing for predetermined temperature distribution and showcasing substantial promise in enhancing smart material properties. This comprehensive overview explores the applications of laser technology and nanotechnology involving DOEs, underscoring their transformative potential in the realms of photonics and optoelectronics. The growing potential for further research and practical applications in this field suggests promising prospects in the near future.

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“…with a uniformly dispersed array of precipitates facilitates the γ ⇌ ε transformation and enhances the PE properties of the alloy [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on microstructure and pseudoelasticity of a memory‐steel

Mohri,

Leinenbach,

Lignos

et al. 2023

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The pseudoelasticity behavior of memory‐steels has recently gained attention for applications in seismic‐resistant structures. The pseudoelasticity can be used to reduce residual deformations in building structures subjected to seismic loading. Fe‐based shape memory alloys (Fe‐SMA), which is also called as memory‐steel, have gained much attention because of their strong shape memory behavior and low material manufacturing cost, which justify their large‐scale application in construction. This research investigated the effects of heat treatment on microstructure and pseudoelasticity of a memory‐steel (Fe‐17Mn‐5Si‐10Cr‐4Ni‐1(V,C) %wt.). Various solution‐annealing treatments from 1000 to 1200 °C for 2 h and aging from 650, 750 and 850 °C were applied to investigate the microstructural evolution and pseudoelasticity behavior of the alloy. The results showed that increasing the solution annealing temperature caused grain growth and pseudoelasticity loss. On the other hand, the precipitation of (Cr,V)Cs after aging resulted in an improved pseudo‐elasticity. The large elastic strain field, which forms near the carbide precipitates, improves the pseudoelasticity. Furthermore, precipitates can provide preferential nucleation sites for the martensite phase and a high density of stacking faults in the austenite matrix. The study concludes that the best pseudoelasticity behavior was achieved after an aging at 750°C for 6 h.

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Influence of thermomechanical treatment on the shape memory effect and pseudoelasticity behavior of conventional and additive manufactured Fe–Mn–Si–Cr–Ni-(V,C) shape memory alloys

Cited by 29 publications

References 56 publications

Memory‐Steel for Smart Steel Structures: A Review on Recent Developments and Applications

Memory‐Steel for Smart Steel Structures: A Review on Recent Developments and Applications

Fabrication of Smart Materials Using Laser Processing: Analysis and Prospects

Effect of heat treatment on microstructure and pseudoelasticity of a memory‐steel

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