A correlation of eutectic growth mechanism with resultant microhardness enhancement for undercooled Ni-47.7%Mo alloy

X. L. Zhao; J. Chang; P. X. Yan; M. X. Li; B. Wei

doi:10.1016/j.matlet.2022.133483

A correlation of eutectic growth mechanism with resultant microhardness enhancement for undercooled Ni-47.7%Mo alloy

X. L. Zhao, J. Chang, P. X. Yan, M. X. Li, B. Wei

物理科学与技术学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

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Liquid Ni-47.7 % Mo alloy was undercooled by 328 K (0.21 T_E) and solidified under microgravity condition to investigate the correlation of microhardness enhancement with eutectic growth mechanism. The microstructural morphology transformed from (Ni) + NiMo lamellar eutectic to a duplex mixture of lamellar and anomalous eutectics, and finally into anomalous eutectic. With the increase of alloy undercooling, the eutectic interphase spacings decreased significantly, leading to a remarkable structural refinement and a conspicuous rise of Vickers hardness. The dependence of microhardness upon eutectic spacing was revealed for lamellar and anomalous eutectics, respectively.

源语言	英语
文章编号	133483
期刊	Materials Letters
卷	331
DOI	https://doi.org/10.1016/j.matlet.2022.133483
出版状态	已出版 - 15 1月 2023

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title = "A correlation of eutectic growth mechanism with resultant microhardness enhancement for undercooled Ni-47.7%Mo alloy",

abstract = "Liquid Ni-47.7 % Mo alloy was undercooled by 328 K (0.21 TE) and solidified under microgravity condition to investigate the correlation of microhardness enhancement with eutectic growth mechanism. The microstructural morphology transformed from (Ni) + NiMo lamellar eutectic to a duplex mixture of lamellar and anomalous eutectics, and finally into anomalous eutectic. With the increase of alloy undercooling, the eutectic interphase spacings decreased significantly, leading to a remarkable structural refinement and a conspicuous rise of Vickers hardness. The dependence of microhardness upon eutectic spacing was revealed for lamellar and anomalous eutectics, respectively.",

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author = "Zhao, {X. L.} and J. Chang and Yan, {P. X.} and Li, {M. X.} and B. Wei",

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

year = "2023",

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T1 - A correlation of eutectic growth mechanism with resultant microhardness enhancement for undercooled Ni-47.7%Mo alloy

AU - Zhao, X. L.

AU - Chang, J.

AU - Yan, P. X.

AU - Li, M. X.

AU - Wei, B.

PY - 2023/1/15

Y1 - 2023/1/15

N2 - Liquid Ni-47.7 % Mo alloy was undercooled by 328 K (0.21 TE) and solidified under microgravity condition to investigate the correlation of microhardness enhancement with eutectic growth mechanism. The microstructural morphology transformed from (Ni) + NiMo lamellar eutectic to a duplex mixture of lamellar and anomalous eutectics, and finally into anomalous eutectic. With the increase of alloy undercooling, the eutectic interphase spacings decreased significantly, leading to a remarkable structural refinement and a conspicuous rise of Vickers hardness. The dependence of microhardness upon eutectic spacing was revealed for lamellar and anomalous eutectics, respectively.

AB - Liquid Ni-47.7 % Mo alloy was undercooled by 328 K (0.21 TE) and solidified under microgravity condition to investigate the correlation of microhardness enhancement with eutectic growth mechanism. The microstructural morphology transformed from (Ni) + NiMo lamellar eutectic to a duplex mixture of lamellar and anomalous eutectics, and finally into anomalous eutectic. With the increase of alloy undercooling, the eutectic interphase spacings decreased significantly, leading to a remarkable structural refinement and a conspicuous rise of Vickers hardness. The dependence of microhardness upon eutectic spacing was revealed for lamellar and anomalous eutectics, respectively.

KW - Eutectic growth

KW - Metals and alloys

KW - Microstructure

KW - Rapid solidification

KW - Vickers hardness

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DO - 10.1016/j.matlet.2022.133483

M3 - 文章

AN - SCOPUS:85142207881

SN - 0167-577X

VL - 331

JO - Materials Letters

JF - Materials Letters

M1 - 133483

ER -

A correlation of eutectic growth mechanism with resultant microhardness enhancement for undercooled Ni-47.7%Mo alloy

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