Surface grain formation mechanism in the laser remelting molten pool of a near-β titanium alloy

Bei He; Wenpeng Shao; Xiangjun Tian

doi:10.1016/j.mtla.2022.101521

Surface grain formation mechanism in the laser remelting molten pool of a near-β titanium alloy

Bei He
, Wenpeng Shao
, Xiangjun Tian^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

6 Scopus citations

Abstract

Near-β titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) was treated by laser surface rapid remelting. Solidification surface grains generated at the free surface were observed. The surface grains consist of a layer of crystal film and inward growth cells. Because of the high supercooling of molten pool surface, crystal film is formed through two-dimensional growth and covers the molten pool surface. Small-scale inward growth cells form on the lower interface of crystal film. Surface grains and epitaxially grown columnar grains have competitive growth relationships.

Original language	English
Article number	101521
Journal	Materialia
Volume	24
DOIs	https://doi.org/10.1016/j.mtla.2022.101521
State	Published - Aug 2022

Keywords

Crystal film
Laser remelting
Rapid solidification
Surface grain
Titanium alloys

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10.1016/j.mtla.2022.101521

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title = "Surface grain formation mechanism in the laser remelting molten pool of a near-β titanium alloy",

abstract = "Near-β titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) was treated by laser surface rapid remelting. Solidification surface grains generated at the free surface were observed. The surface grains consist of a layer of crystal film and inward growth cells. Because of the high supercooling of molten pool surface, crystal film is formed through two-dimensional growth and covers the molten pool surface. Small-scale inward growth cells form on the lower interface of crystal film. Surface grains and epitaxially grown columnar grains have competitive growth relationships.",

keywords = "Crystal film, Laser remelting, Rapid solidification, Surface grain, Titanium alloys",

author = "Bei He and Wenpeng Shao and Xiangjun Tian",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = aug,

doi = "10.1016/j.mtla.2022.101521",

language = "英语",

volume = "24",

journal = "Materialia",

issn = "2589-1529",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Surface grain formation mechanism in the laser remelting molten pool of a near-β titanium alloy

AU - He, Bei

AU - Shao, Wenpeng

AU - Tian, Xiangjun

PY - 2022/8

Y1 - 2022/8

N2 - Near-β titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) was treated by laser surface rapid remelting. Solidification surface grains generated at the free surface were observed. The surface grains consist of a layer of crystal film and inward growth cells. Because of the high supercooling of molten pool surface, crystal film is formed through two-dimensional growth and covers the molten pool surface. Small-scale inward growth cells form on the lower interface of crystal film. Surface grains and epitaxially grown columnar grains have competitive growth relationships.

AB - Near-β titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) was treated by laser surface rapid remelting. Solidification surface grains generated at the free surface were observed. The surface grains consist of a layer of crystal film and inward growth cells. Because of the high supercooling of molten pool surface, crystal film is formed through two-dimensional growth and covers the molten pool surface. Small-scale inward growth cells form on the lower interface of crystal film. Surface grains and epitaxially grown columnar grains have competitive growth relationships.

KW - Crystal film

KW - Laser remelting

KW - Rapid solidification

KW - Surface grain

KW - Titanium alloys

UR - https://www.scopus.com/pages/publications/85135128686

U2 - 10.1016/j.mtla.2022.101521

DO - 10.1016/j.mtla.2022.101521

M3 - 文章

AN - SCOPUS:85135128686

SN - 2589-1529

VL - 24

JO - Materialia

JF - Materialia

M1 - 101521

ER -

Surface grain formation mechanism in the laser remelting molten pool of a near-β titanium alloy

Abstract

Keywords

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