Metastable nanostructures with enhanced hardness of Ti-Ni-Al alloy through electrostatic levitation processing

R. L. Xiao; Y. Ruan; M. J. Lin; L. Hu; B. Wei

doi:10.1016/j.matlet.2022.132732

Metastable nanostructures with enhanced hardness of Ti-Ni-Al alloy through electrostatic levitation processing

R. L. Xiao, Y. Ruan, M. J. Lin, L. Hu, B. Wei

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

4 Scopus citations

Abstract

We prepared a Ti-Ni-Al alloy comprised of metastable equiaxed (βTi) dendrites and interdendritic Ti₂Ni phase by means of electrostatic levitation plus quenching. It exhibited an impressive improvement in hardness compared with the sample through DTA processing. By employing the double Cs corrector transmission electron microscope characterization, the coherent solute cluster and semi-coherent nano-distortion (βTi) were found to form within the metastable (βTi) dendrites, and (αTi) nanoprecipitates generated inside interdendritic Ti₂Ni phase matrix. These dispersive metastable nanostructures and the novel (αTi) + Ti₂Ni biphase boundary contributed cooperatively to pinning dislocation. The harmonic cooperation of precipitation strengthening, solution strengthening and fine-grained strengthening were realized to enhance the alloy.

Original language	English
Article number	132732
Journal	Materials Letters
Volume	324
DOIs	https://doi.org/10.1016/j.matlet.2022.132732
State	Published - 1 Oct 2022

Keywords

Electrostatic levitation
Metastable nanostructure
Microstructure
Solidification
Solute cluster

Access to Document

10.1016/j.matlet.2022.132732

Cite this

@article{10f09593597242789e5a9e7d849918d0,

title = "Metastable nanostructures with enhanced hardness of Ti-Ni-Al alloy through electrostatic levitation processing",

abstract = "We prepared a Ti-Ni-Al alloy comprised of metastable equiaxed (βTi) dendrites and interdendritic Ti2Ni phase by means of electrostatic levitation plus quenching. It exhibited an impressive improvement in hardness compared with the sample through DTA processing. By employing the double Cs corrector transmission electron microscope characterization, the coherent solute cluster and semi-coherent nano-distortion (βTi) were found to form within the metastable (βTi) dendrites, and (αTi) nanoprecipitates generated inside interdendritic Ti2Ni phase matrix. These dispersive metastable nanostructures and the novel (αTi) + Ti2Ni biphase boundary contributed cooperatively to pinning dislocation. The harmonic cooperation of precipitation strengthening, solution strengthening and fine-grained strengthening were realized to enhance the alloy.",

keywords = "Electrostatic levitation, Metastable nanostructure, Microstructure, Solidification, Solute cluster",

author = "Xiao, {R. L.} and Y. Ruan and Lin, {M. J.} and L. Hu and B. Wei",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2022.132732",

language = "英语",

volume = "324",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Metastable nanostructures with enhanced hardness of Ti-Ni-Al alloy through electrostatic levitation processing

AU - Xiao, R. L.

AU - Ruan, Y.

AU - Lin, M. J.

AU - Hu, L.

AU - Wei, B.

PY - 2022/10/1

Y1 - 2022/10/1

N2 - We prepared a Ti-Ni-Al alloy comprised of metastable equiaxed (βTi) dendrites and interdendritic Ti2Ni phase by means of electrostatic levitation plus quenching. It exhibited an impressive improvement in hardness compared with the sample through DTA processing. By employing the double Cs corrector transmission electron microscope characterization, the coherent solute cluster and semi-coherent nano-distortion (βTi) were found to form within the metastable (βTi) dendrites, and (αTi) nanoprecipitates generated inside interdendritic Ti2Ni phase matrix. These dispersive metastable nanostructures and the novel (αTi) + Ti2Ni biphase boundary contributed cooperatively to pinning dislocation. The harmonic cooperation of precipitation strengthening, solution strengthening and fine-grained strengthening were realized to enhance the alloy.

AB - We prepared a Ti-Ni-Al alloy comprised of metastable equiaxed (βTi) dendrites and interdendritic Ti2Ni phase by means of electrostatic levitation plus quenching. It exhibited an impressive improvement in hardness compared with the sample through DTA processing. By employing the double Cs corrector transmission electron microscope characterization, the coherent solute cluster and semi-coherent nano-distortion (βTi) were found to form within the metastable (βTi) dendrites, and (αTi) nanoprecipitates generated inside interdendritic Ti2Ni phase matrix. These dispersive metastable nanostructures and the novel (αTi) + Ti2Ni biphase boundary contributed cooperatively to pinning dislocation. The harmonic cooperation of precipitation strengthening, solution strengthening and fine-grained strengthening were realized to enhance the alloy.

KW - Electrostatic levitation

KW - Metastable nanostructure

KW - Microstructure

KW - Solidification

KW - Solute cluster

UR - http://www.scopus.com/inward/record.url?scp=85133500918&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2022.132732

DO - 10.1016/j.matlet.2022.132732

M3 - 文章

AN - SCOPUS:85133500918

SN - 0167-577X

VL - 324

JO - Materials Letters

JF - Materials Letters

M1 - 132732

ER -

Metastable nanostructures with enhanced hardness of Ti-Ni-Al alloy through electrostatic levitation processing

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this