On the lattice parameters of phases in binary Ti–Ni shape memory alloys

Прокошкин, С.Д.; Korotitskiy, Andrey; Braïlovski, Vladimir; Turenne, S.; Khmelevskaya, I. Yu.; Trubitsyna, Irina

doi:10.1016/j.actamat.2004.06.007

Cited by 124 publications

(89 citation statements)

References 15 publications

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“…4. It is interesting to note that the {110} B2 peak slightly shifted to a lower diffraction angle, indicating that the lattice spacing of the Ti-Ni B2 phase increased by heating from 710 up to 750 K. It was reported in previous researches that the lattice parameter of the Ti-Ni decreased with increasing Ni-content in the Ni-rich region [11]. Thus, the increase of the lattice spacing of the Ti-Ni B2 in the Ti/Ni multilayer thin film indicates that the Ni-content of the Ti-Ni B2 decreased with increasing heating temperature by interdiffusion of Ti atoms into the Ti-Ni from the residual Ti layers sandwiching the Ti-Ni layer.…”

Section: Resultsmentioning

confidence: 94%

Fabrication and characterization of Ti–Ni shape memory thin film using Ti/Ni multilayer technique

Cho

Kim

Miyazaki³

2005

Science and Technology of Advanced Materials

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Alloying process and shape memory properties of a Ti/Ni multilayer thin film fabricated by a dual d.c. magnetron sputter-deposition method were investigated, and compared with those of a Ti-Ni amorphous thin film fabricated by an alloy target sputter-deposition method. The multilayer thin film was made by depositing Ti and Ni layers alternately on a SiO 2 /Si substrate. The Ti and Ni of the Ti/Ni multilayer thin film were crystalline after deposition. Alloying of the Ti/Ni multilayer thin film proceeded in multi steps. Amorphous phase was formed at the interfaces between the Ti and Ni layers by inter-diffusion of the Ti and Ni atoms during heating up to 640 K. Ni-rich Ti-Ni B2 phase was formed during heating up to 710 K. During further heating up to 750 K, the Ni-content of the Ti-Ni B2 phase decreased and Ti 2 Ni phase was formed. The Ti/Ni multilayer thin film exhibited shape memory effect after heat-treatment at 673 K where Ti-Ni amorphous thin films were not crystallized. The heat-treated Ti/Ni multilayer thin films exhibited the shape memory effect equivalent to that of the heat-treated Ti-Ni amorphous thin films when the heat-treatment temperature was above 873 K. q

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Section: Resultsmentioning

confidence: 94%

Fabrication and characterization of Ti–Ni shape memory thin film using Ti/Ni multilayer technique

Cho

Kim

Miyazaki³

2005

Science and Technology of Advanced Materials

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“…However, some results for stress-induced and reoriented martensites do not confirm this assumption [11,12]. A similar discrepancy is related to the LPs of a moderately plastically deformed martensite [12,13,6].…”

Section: Introductionmentioning

confidence: 77%

“…It has been observed that the LPs of the B19'-martensite formed from highly-dislocated austenite, differ from the corresponding LPs of the martensite formed by quenching from recrystallized austenite [6,8]. As for the martensite LP in nanocrystalline Ti-Ni SMA, they have not yet been studied.…”

Section: Introductionmentioning

confidence: 98%

“…The X-ray diffractograms were obtained by means of CuK radiation in the 150 toPANalytical X'pert-Pro ipped with a low-temperature camera system, TTK450+LNC a, b, c -martensite were calculated from the angular peak positions of X-ray lines, as in [6]. The maximum transformation lattice strain (referred to the M S temperatures) was calculated from the B19'-martensite and B2-austenite LPs following a procedure described in [6]. The crystallographic direction of maximum lattice strain and maximum transformation lattice strain for polycrystalline austenite were calculated as well.…”

Section: Methodsmentioning

confidence: 99%

“…The reversible changes of the martensite LPs with temperature were found to be anisotropic: the values of a, c while b decreases on cooling, accompanied, however, by the normal decrease of the unit cell volume max exists in a hyperequiatomic nickel concentration range: a, c decrease and b increases as nickel concentration increases [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A comparative study of martensite crystal lattice in nanostructured, quenched and deformed Ti-Ni shape memory alloys

Прокошкин

Korotitskiy

Braïlovski

et al. 2009

ESOMAT 2009 - 8th European Symposium on Martensitic Transformations

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Abstract. The crystal lattices of cooling-induced (thermal) martensites formed in thermally and thermomechanically treated Ti-Ni Shape Memory Alloys (SMA) and stress-induced, reoriented and plastically deformed martensites were studied using the X-ray diffraction method. The linear dependences of the -martensite lattice parameters (LPs), maximum transformation lattice strain in single-and polycrystalline B2-austenites as well as its crystallographic direction on nickel concentration in the hyperequiatomic range are presented. The lattice parameters and maximum transformation lattice strain of martensite formed from nanocrystalline or polygonized austenites differ from those of quenched martensite formed from recrystallized austenite. The averaged LPs of stress-induced, reoriented and moderately plastically deformed martensites are close to the lattice parameters of quenched martensite.

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X-Ray Diffraction Studies of Thermally and Thermomechanically Treated Binary Ti-Ni Alloys

Прокошкин

Korotitskiy

Braïlovski

et al. 2013

Icomat

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On the lattice parameters of phases in binary Ti–Ni shape memory alloys

Cited by 124 publications

References 15 publications

Fabrication and characterization of Ti–Ni shape memory thin film using Ti/Ni multilayer technique

Fabrication and characterization of Ti–Ni shape memory thin film using Ti/Ni multilayer technique

A comparative study of martensite crystal lattice in nanostructured, quenched and deformed Ti-Ni shape memory alloys

X-Ray Diffraction Studies of Thermally and Thermomechanically Treated Binary Ti-Ni Alloys

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