High damping performances over wide temperature range in the B doped Ti-Ni shape memory alloys

Li, Jun; Sun, Kang; Li, Xinhang; Meng, Xianglong; Cai, Wei

doi:10.1016/j.matlet.2022.133245

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The crack propagation is controlled by the voids and micro-cracks on prior-α/β trans interphase boundaries and, therefore, by GB wetting. GB wetting by the second solid phase was observed in the Ti-Nb-Al alloys produced by spark plasma sintering and mechanical alloying with varied Ta additions [116], Ti-6Al-4V-xCe (x = 0, 0.1, 0.3, 0.5, 0.7 wt%) alloys [118], Ti-Ni shape memory alloys doped with boron [119], hotdeformed Ti-47Al-1.5Re-X (Cr, Mn, V, Nb) alloy [120], TC11 duplex titanium alloy (with nominal composition Ti-3.5Mo-6.5Al-1.5Zr-0.3Si) manufactured by the laser-directed energy deposition and annealed afterward at 1020 • C [121].…”

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 97%

“…fore, by GB wetting. GB wetting by the second solid phase was observed in the Ti-Nb-Al alloys produced by spark plasma sintering and mechanical alloying with varied Ta additions [116], Ti-6Al-4V-xCe (x = 0, 0.1, 0.3, 0.5, 0.7 wt%) alloys [118], Ti-Ni shape memory alloys doped with boron [119], hot-deformed Ti-47Al-1.5Re-X (Cr, Mn, V, Nb) alloy [120], TC11 duplex titanium alloy (with nominal composition Ti-3.5Mo-6.5Al-1.5Zr-0.3Si) manufactured by the laser-directed energy deposition and annealed afterward at 1020 °C [121]. H. Guo et al [124] studied the thermal conductivity and phase morphology of Mg-RE (Rare-Earth) alloys (Mg-Nd, Mg-La, Mg-Sm, Mg-Ce) in both as-cast and annealed states.…”

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 97%

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Grain Boundary Wetting by the Second Solid Phase: 20 Years of History

Straumal

Lepkova

Korneva

et al. 2023

Metals

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Grain boundaries (GBs) can be wetted by a second phase. This phase can be not only liquid (or melted), but it can also be solid. GB wetting can be incomplete (partial) or complete. In the case of incomplete (partial) wetting, the liquid forms in the GB droplets, and the second solid phase forms a chain of (usually lenticular) precipitates. Droplets or precipitates have a non-zero contact angle with the GB. In the case of complete GB wetting, the second phase (liquid or solid) forms in the GB continuous layers between matrix grains. These GB layers completely separate the matrix crystallites from each other. GB wetting by a second solid phase has some important differences from GB wetting by the melt phase. In the latter case, the contact angle always decreases with increasing temperature. If the wetting phase is solid, the contact angle can also increase with increasing temperature. Moreover, the transition from partial to complete wetting can be followed by the opposite transition from complete to partial GB wetting. The GB triple junctions are completely wetted in the broader temperature interval than GBs. Since Phase 2 is also solid, it contains GBs as well. This means that not only can Phase 2 wet the GBs in Phase 1, but the opposite can also occur when Phase 1 can wet the GBs in Phase 2. GB wetting by the second solid phase was observed in the Al-, Mg-, Co-, Ni-, Fe-, Cu-, Zr-, and Ti-based alloys as well as in multicomponent alloys, including high-entropy ones. It can seriously influence various properties of materials.

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Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 97%

Section: Influence Of Gb Wetting By the Second Solid Phase On The Pro...mentioning

confidence: 97%

Grain Boundary Wetting by the Second Solid Phase: 20 Years of History

Straumal

Lepkova

Korneva

et al. 2023

Metals

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“…The shape memory effects of Ti-Ni-based alloys or films have been the focus of many studies [33][34][35][36][37], but the structure-property relationship of Ti-Ni alloys in the Ti-rich region (<40 at%) has been rarely reported. In view of the complex processes and cost of cast Ti-Ni bulks, this study employed magnetron sputtering to deposit Ti-Ni films with a series of Ni content by adjusting the Ni target power.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Co-Deposited Ti-Ni Films Prepared by Magnetron Sputtering

Zhang

et al. 2023

Coatings

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Ti-Ni films with various Ni contents (16.5, 22.0, 33.5 at. %) were deposited on Al alloy substrates using DC magnetron co-sputtering. The effects of Ni target power and substrate bias (−10, −70, −110 V) on morphologies, crystallography, nanomechanical properties and scratch behavior of films were studied. All the deposited Ti-Ni films exhibited a BCC structure of β-Ti (Ni). The Ti-Ni films grew with a normal columnar structure with good bonding to substrates. When increasing the Ni target power and substrate bias, the grain size grew larger and the surface became denser. The as-deposited Ti-Ni films significantly improved the hardness (>4 GPa) of the Al alloy substrate. With the increase of bias voltage, the hardness and modulus of the film increased. The hardness and modulus of the Ti-22.0Ni film prepared at −70 V bias were 5.17 GPa and 97.6 GPa, respectively, and it had good adhesion to the substrate.

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