Structure of a 3D frame-bridge NiTi sample deposited on a low carbon steel substrate by wire arc additive manufacturing

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Structure of a 3D frame-bridge NiTi sample deposited on a low carbon steel substrate by wire arc additive manufacturing. / Resnina, N.N.; Palani, I. A.; Liulchak, P.S.; Belyaev, S.P.; Mani Prabu, S.S.; Jayachandran, S.; Kalganov, V.D.

In: Letters on Materials, Vol. 10, No. 4, 2020, p. 496-500.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{c63a8bb2a2594d5291ff95f399391c9b,

title = "Structure of a 3D frame-bridge NiTi sample deposited on a low carbon steel substrate by wire arc additive manufacturing",

abstract = "A 3D frame-bridge sample was produced by wire arc additive manufacturing (WAAM) on a low carbon steel substrate using the Ni 50.9 Ti 49.1 shape memory wire with a diameter of 1.2 mm. The sample consisted of a rectangular frame and three bridges. The structure and chemical composition were studied in different zones: the frame, the bridge or joint of the frame and the bridge using light and scanning electron microscopy with energy dispersive X-ray spectroscopy. It was shown that the structure of the frame and the bridge located far from the joint was close to the “walls” produced by WAAM: a columnar grain grew across the layers and the equiaxed grains appeared on the top of the layer. The structure of the joint between frame and bridge significantly differed from the “walls”: from the frame side, columnar grains were found across and alone the layers, whereas, from the bridge side the columnar gains were observed in the first layer only. The study of the chemical composition showed that the Fe and C elements diffused to the sample from the low carbon steel substrate. As a result, TiC precipitates appeared in all layers that led to the alloy hardening. Fe atoms penetrated to the NiTi phase that suppressed the martensitic transformation. ",

keywords = "additive manufacturing, NiTi shape memory alloys, microstructure, Wire arc additive manufacturing, 3D STRUCTURE, NiTi shape memory alloy, 3D structure, Additive manufacturing, Microstructure",

author = "N.N. Resnina and Palani, {I. A.} and P.S. Liulchak and S.P. Belyaev and {Mani Prabu}, S.S. and S. Jayachandran and V.D. Kalganov",

year = "2020",

doi = "10.22226/2410-3535-2020-4-496-500",

language = "English",

volume = "10",

pages = "496--500",

journal = "Letters on Materials",

issn = "2218-5046",

publisher = "RUSSIAN ACAD SCIENCES, INST METALS SUPERPLASTICITY PROBLEMS",

number = "4",

}

RIS

TY - JOUR

T1 - Structure of a 3D frame-bridge NiTi sample deposited on a low carbon steel substrate by wire arc additive manufacturing

AU - Resnina, N.N.

AU - Palani, I. A.

AU - Liulchak, P.S.

AU - Belyaev, S.P.

AU - Mani Prabu, S.S.

AU - Jayachandran, S.

AU - Kalganov, V.D.

PY - 2020

Y1 - 2020

N2 - A 3D frame-bridge sample was produced by wire arc additive manufacturing (WAAM) on a low carbon steel substrate using the Ni 50.9 Ti 49.1 shape memory wire with a diameter of 1.2 mm. The sample consisted of a rectangular frame and three bridges. The structure and chemical composition were studied in different zones: the frame, the bridge or joint of the frame and the bridge using light and scanning electron microscopy with energy dispersive X-ray spectroscopy. It was shown that the structure of the frame and the bridge located far from the joint was close to the “walls” produced by WAAM: a columnar grain grew across the layers and the equiaxed grains appeared on the top of the layer. The structure of the joint between frame and bridge significantly differed from the “walls”: from the frame side, columnar grains were found across and alone the layers, whereas, from the bridge side the columnar gains were observed in the first layer only. The study of the chemical composition showed that the Fe and C elements diffused to the sample from the low carbon steel substrate. As a result, TiC precipitates appeared in all layers that led to the alloy hardening. Fe atoms penetrated to the NiTi phase that suppressed the martensitic transformation.

AB - A 3D frame-bridge sample was produced by wire arc additive manufacturing (WAAM) on a low carbon steel substrate using the Ni 50.9 Ti 49.1 shape memory wire with a diameter of 1.2 mm. The sample consisted of a rectangular frame and three bridges. The structure and chemical composition were studied in different zones: the frame, the bridge or joint of the frame and the bridge using light and scanning electron microscopy with energy dispersive X-ray spectroscopy. It was shown that the structure of the frame and the bridge located far from the joint was close to the “walls” produced by WAAM: a columnar grain grew across the layers and the equiaxed grains appeared on the top of the layer. The structure of the joint between frame and bridge significantly differed from the “walls”: from the frame side, columnar grains were found across and alone the layers, whereas, from the bridge side the columnar gains were observed in the first layer only. The study of the chemical composition showed that the Fe and C elements diffused to the sample from the low carbon steel substrate. As a result, TiC precipitates appeared in all layers that led to the alloy hardening. Fe atoms penetrated to the NiTi phase that suppressed the martensitic transformation.

KW - additive manufacturing

KW - NiTi shape memory alloys

KW - microstructure

KW - Wire arc additive manufacturing

KW - 3D STRUCTURE

KW - NiTi shape memory alloy

KW - 3D structure

KW - Additive manufacturing

KW - Microstructure

UR - https://www.elibrary.ru/item.asp?id=44296322

UR - https://lettersonmaterials.com/ru/Readers/Article.aspx?aid=32922

UR - http://www.scopus.com/inward/record.url?scp=85097397013&partnerID=8YFLogxK

U2 - 10.22226/2410-3535-2020-4-496-500

DO - 10.22226/2410-3535-2020-4-496-500

M3 - Article

VL - 10

SP - 496

EP - 500

JO - Letters on Materials

JF - Letters on Materials

SN - 2218-5046

IS - 4

ER -

ID: 71871939