Primary phase growth and microstructure evolution of rapidly solidifying ternary Ti-12Al-8V alloy

S. L. Wei; L. J. Huang; J. Chang; W. Zhai; S. J. Yang; L. Geng

doi:10.1016/j.matlet.2016.04.043

Primary phase growth and microstructure evolution of rapidly solidifying ternary Ti-12Al-8V alloy

S. L. Wei, L. J. Huang, J. Chang, W. Zhai, S. J. Yang, L. Geng

物理科学与技术学院

科研成果: 期刊稿件 › 文章 › 同行评审

23 引用（Scopus）

摘要

Liquid Ti-12Al-8V alloy was rapidly solidified by electromagnetic levitation and drop tube techniques. The levitation processing avoided the violent heterogeneous nucleation of primary β phase and led to an actual maximum undercooling of 212 K (0.11T_L). The primary β dendrites exhibited a high growth velocity up to 14.9 m/s but subsequently transformed into basket weave structures. Drop tube experiments indicated that the final microstructure morphology was determined by the coupled influences of undercooling extent and cooling rate. If the cooling rate exceeded 3.31×10³ K/s, the primary β phase was retained metastably to ambient temperature.

源语言	英语
页（从-至）	291-295
页数	5
期刊	Materials Letters
卷	175
DOI	https://doi.org/10.1016/j.matlet.2016.04.043
出版状态	已出版 - 15 7月 2016

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title = "Primary phase growth and microstructure evolution of rapidly solidifying ternary Ti-12Al-8V alloy",

abstract = "Liquid Ti-12Al-8V alloy was rapidly solidified by electromagnetic levitation and drop tube techniques. The levitation processing avoided the violent heterogeneous nucleation of primary β phase and led to an actual maximum undercooling of 212 K (0.11TL). The primary β dendrites exhibited a high growth velocity up to 14.9 m/s but subsequently transformed into basket weave structures. Drop tube experiments indicated that the final microstructure morphology was determined by the coupled influences of undercooling extent and cooling rate. If the cooling rate exceeded 3.31×103 K/s, the primary β phase was retained metastably to ambient temperature.",

keywords = "Crystal growth, Microstructure, Solidification, Thermal analysis, Titanium alloy",

author = "Wei, {S. L.} and Huang, {L. J.} and J. Chang and W. Zhai and Yang, {S. J.} and L. Geng",

year = "2016",

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day = "15",

doi = "10.1016/j.matlet.2016.04.043",

language = "英语",

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T1 - Primary phase growth and microstructure evolution of rapidly solidifying ternary Ti-12Al-8V alloy

AU - Wei, S. L.

AU - Huang, L. J.

AU - Chang, J.

AU - Zhai, W.

AU - Yang, S. J.

AU - Geng, L.

PY - 2016/7/15

Y1 - 2016/7/15

N2 - Liquid Ti-12Al-8V alloy was rapidly solidified by electromagnetic levitation and drop tube techniques. The levitation processing avoided the violent heterogeneous nucleation of primary β phase and led to an actual maximum undercooling of 212 K (0.11TL). The primary β dendrites exhibited a high growth velocity up to 14.9 m/s but subsequently transformed into basket weave structures. Drop tube experiments indicated that the final microstructure morphology was determined by the coupled influences of undercooling extent and cooling rate. If the cooling rate exceeded 3.31×103 K/s, the primary β phase was retained metastably to ambient temperature.

AB - Liquid Ti-12Al-8V alloy was rapidly solidified by electromagnetic levitation and drop tube techniques. The levitation processing avoided the violent heterogeneous nucleation of primary β phase and led to an actual maximum undercooling of 212 K (0.11TL). The primary β dendrites exhibited a high growth velocity up to 14.9 m/s but subsequently transformed into basket weave structures. Drop tube experiments indicated that the final microstructure morphology was determined by the coupled influences of undercooling extent and cooling rate. If the cooling rate exceeded 3.31×103 K/s, the primary β phase was retained metastably to ambient temperature.

KW - Crystal growth

KW - Microstructure

KW - Solidification

KW - Thermal analysis

KW - Titanium alloy

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U2 - 10.1016/j.matlet.2016.04.043

DO - 10.1016/j.matlet.2016.04.043

M3 - 文章

AN - SCOPUS:84962860343

SN - 0167-577X

VL - 175

SP - 291

EP - 295

JO - Materials Letters

JF - Materials Letters

ER -

Primary phase growth and microstructure evolution of rapidly solidifying ternary Ti-12Al-8V alloy

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