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6 Results Found

  • Feature Paper
  • Article
  • Open Access
26 Citations
4,931 Views
21 Pages
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Laser Powder Bed Fusion of NiTiHf High-Temperature Shape Memory Alloy: Effect of Process Parameters on the Thermomechanical Behavior

  • Mohammadreza Nematollahi,
  • Guher P. Toker,
  • Keyvan Safaei,
  • Alejandro Hinojos,
  • S. Ehsan Saghaian,
  • Othmane Benafan,
  • Michael J. Mills,
  • Haluk Karaca and
  • Mohammad Elahinia
Metals2020, 10(11), 1522;https://doi.org/10.3390/met10111522

17 November 2020

Laser powder bed fusion has been widely investigated for shape memory alloys, primarily NiTi alloys, with the goal of tailoring microstructures and producing complex geometries. However, processing high temperature shape memory alloys (HTSMAs) remain...

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  • Article
  • Open Access
1 Citations
2,003 Views
21 Pages
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LPBF Processability of NiTiHf Alloys: Systematic Modeling and Single-Track Studies

  • Hediyeh Dabbaghi,
  • Mohammad Pourshams,
  • Mohammadreza Nematollahi,
  • Behrang Poorganji,
  • Michael M. Kirka,
  • Scott Smith,
  • Chins Chinnasamy and
  • Mohammad Elahinia
Materials2024, 17(16), 4150;https://doi.org/10.3390/ma17164150

22 August 2024

Research into the processability of NiTiHf high-temperature shape memory alloys (HTSMAs) via laser powder bed fusion (LPBF) is limited; nevertheless, these alloys show promise for applications in extreme environments. This study aims to address this...

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  • Article
  • Open Access
33 Citations
10,031 Views
15 Pages
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Effect of Ni-Content on the Transformation Temperatures in NiTi-20 at. % Zr High Temperature Shape Memory Alloys

  • Matthew Carl,
  • Jesse D. Smith,
  • Brian Van Doren and
  • Marcus L. Young
Metals2017, 7(11), 511;https://doi.org/10.3390/met7110511

21 November 2017

The effect of Ni-content on phase transformation behavior of NiTi-20 at. % Zr high temperature shape memory alloy (HTSMA) is investigated over a small composition range, i.e., 49.8, 50.0 and 50.2 at. % Ni, by differential scanning calorimetry (DSC),...

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  • Article
  • Open Access
4 Citations
2,483 Views
14 Pages
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Thermal Stability of Cu-Al-Ni Shape Memory Alloy Thin Films Obtained by Nanometer Multilayer Deposition

  • Jose F. Gómez-Cortés,
  • María L. Nó,
  • Andrey Chuvilin,
  • Isabel Ruiz-Larrea and
  • Jose M. San Juan
Nanomaterials2023, 13(18), 2605;https://doi.org/10.3390/nano13182605

21 September 2023

Cu-Al-Ni is a high-temperature shape memory alloy (HTSMA) with exceptional thermomechanical properties, making it an ideal active material for engineering new technologies able to operate at temperatures up to 200 °C. Recent studies revealed that...

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  • Article
  • Open Access
11 Citations
3,862 Views
10 Pages
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Investigations of Deformation Behavior and Microstructure of Al Tailored Ti–Mo High Temperature Shape Memory Alloys during Isothermal Holding at 393 K

  • Naoki Nohira,
  • Yoshiaki Oshita,
  • Wan-Ting Chiu,
  • Akira Umise,
  • Masaki Tahara and
  • Hideki Hosoda
Micro2022, 2(1), 113-122;https://doi.org/10.3390/micro2010007

25 January 2022

To utilize β-Ti based high temperature (HT) shape memory alloys (SMAs), a high Al concentration of 14 mol% was designed for sufficient suppressing the undesired ω-phase. HTSMA exhibits shape memory effect (SME) above 373 K, and thus the op...

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  • Open Access
1,448 Views
12 Pages
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First-Principle Study on Tailoring the Martensitic Transformation of B2 Nb50−xTixRu50 Shape-Memory Alloy for Structural Applications

  • Duduzile Nkomo,
  • Yu-Nien Shen,
  • Roelf Mostert,
  • Yoko Yamabe-Mitarai and
  • Maje Phasha
Metals2024, 14(9), 976;https://doi.org/10.3390/met14090976

28 August 2024

NbRu has a potential as a high-temperature shape-memory alloy (HTSMA) because it has a martensitic transformation temperature above 1000 °C. However, its shape-memory properties could be improved for consideration in the aerospace and automotive...

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