Texture, aging, and superelasticity of selective laser melting fabricated Ni-rich NiTi alloys

Saedi, Soheil; Turabi, Ali Sadi; Andani, Mohsen Taheri; Moghaddam, Narges Shayesteh; Elahinia, Mohammad; Karaca, H.E.

doi:10.1016/j.msea.2017.01.008

Cited by 168 publications

(64 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Relevant researches on the selective laser melting (SLM) fabricated NiTi alloy are mainly concentrated on the processing optimization with both pre-alloying powder [6][7][8][9][10][11][12][13][14][15][16][17][18] and mixed pure powders [19] as starting powder materials, the measurement of martensitic transformation temperatures [6][7][8][9][10][11][12][13][14][15][16][17][18], the detection of the stress or strain-induced martensitic transformation from different thermomechanical conditions [10,12,15,[16][17][18], the effect of post-heat treatment [10,12], evaluation of other functional properties such as the damping properties [6] and the fatigue behavior [13,14]. Based on these numerous investigations, it is worth noting that it exists large discrepancies in results, especially in terms of the final mechanical properties and shape memory effects.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser beam energy dependence of martensitic transformation in SLM fabricated NiTi shape memory alloy

Yang

Zhan

et al. 2019

Materialia

View full text Add to dashboard Cite

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Section: Introductionmentioning

confidence: 99%

“…As the origin of functional properties of NiTi alloy, the MT indeed plays a crucial role in the final processing and optimization. That is why the MT temperatures [6][7][8][9][10][11][12][13][14][15][16][17][18] and the critical stress inducing the martensitic transformation [10,12,15,[16][17][18] are widely investigated by most of…”

Section: Introductionmentioning

confidence: 99%

Laser beam energy dependence of martensitic transformation in SLM fabricated NiTi shape memory alloy

Yang

Zhan

et al. 2019

Materialia

View full text Add to dashboard Cite

show abstract

“…Such efforts have led many to question the use of materials designed for traditional wrought processes in AM and research has evolved to study the effects of AM processing on more unusual materials such as intermetallics. Specific work in intermetallics has been focused on materials such as titanium aluminides for high temperature strength, oxidation resistance, and creep resistance in the aerospace industry [1][2][3][4], or nickel titanium intermetallics for shape memory, damping, and biocompatibility for implants in the medical industry [5][6][7][8][9]. Only a few publications have investigated the potential for the selective laser melting (SLM) of magnetic intermetallics [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Grain Size Effects in Selective Laser Melted Fe-Co-2V

Everhart

Newkirk

2019

Applied Sciences

View full text Add to dashboard Cite

The material science of additive manufacturing (AM) has become a significant topic due to the unique way in which the material and geometry are created simultaneously. Major areas of research within inorganic materials include traditional structural materials, shape memory alloys, amorphous materials, and some new work in intermetallics. The unique thermal profiles created during selective laser melting (SLM) may provide new opportunities for processing intermetallics to improve mechanical and magnetic performance. A parameter set for the production of Fe-Co-2V material with additive manufacturing is developed and efforts are made to compare the traditional wrought alloy to the AM version of the same chemistry. Evaluation includes magnetic properties, composition, and phase as a function of thermal history, as well as mechanical performance. Results show significant similarities in microstructure between AM and wrought materials, as well as mechanical and magnetic performance. Property trends are evaluated as a function of grain size and show effects similar to the Hall–Petch strengthening observed in wrought material, though with some underprediction of the strength. Magnetic properties qualitatively follow the expected trends but demonstrate some deviation from wrought material, which is still unexplained.

show abstract

“…The slight decrease in free vibration frequency when the SMA temperature changed from T ( T 1 to T % T 1 is possibly an effect of the R-phase, a trigonal lattice with a martensitic nature that can be attributed to composition inhomogeneity. 25,26 At temperatures greater than 45 C, the oscillation frequency increased to 41.1 Hz. The damping ratio values were estimated (by the logarithmic decrement method) as 0.0072 and 0.0043 for the low-and hightemperature cases, respectively.…”

Section: For Details) Furthermore Damping Is Neglected At This Poinmentioning

confidence: 98%

Tunable metamaterial beam with shape memory alloy resonators: Theory and experiment

Sousa

Tan

Marqui

et al. 2018

Applied Physics Letters

View full text Add to dashboard Cite

We investigate and experimentally validate the concept of bandgap tuning in a locally resonant metamaterial beam exploiting shape memory alloy (SMA) resonators. The underlying mechanism is based on the difference between the martensitic phase (low temperature) and austenitic phase (high temperature) elastic moduli of the resonators, enabling a significant shift of the bandgap for a sufficient temperature change. Experimental validations are presented for a base-excited locally resonant metamaterial beam with SMA resonators following a brief theoretical background. It is shown that the lower bound of the bandgap as well as the bandwidth can be increased by 15% as the temperature is increased from 25 °C to 45 °C for the specific SMAs used in this work for concept demonstration. The change in the bandgap lower bound frequency and its bandwidth is governed by the square root of the fully austenitic to fully martensitic elastic moduli ratio, and it could be as high as 70% or more for other SMAs reported in the literature.

show abstract

Texture, aging, and superelasticity of selective laser melting fabricated Ni-rich NiTi alloys

Cited by 168 publications

References 57 publications

Laser beam energy dependence of martensitic transformation in SLM fabricated NiTi shape memory alloy

Laser beam energy dependence of martensitic transformation in SLM fabricated NiTi shape memory alloy

Grain Size Effects in Selective Laser Melted Fe-Co-2V

Tunable metamaterial beam with shape memory alloy resonators: Theory and experiment

Contact Info

Product

Resources

About