Diverse microstructure of Ti6.5Al2Zr1Mo1V fabricated via electron beam selective melting

Jixin Yang; Tian Chen; Yongjiang Huang; Hongge Li; Chao Guo; Jianfei Sun

doi:10.1016/j.matlet.2021.130597

Diverse microstructure of Ti6.5Al2Zr1Mo1V fabricated via electron beam selective melting

Jixin Yang
, Tian Chen
, Yongjiang Huang^*
, Hongge Li
, Chao Guo
, Jianfei Sun

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology
CAS - Chongqing Institute of Green and Intelligent Technology
Tianjin SciTsinghua QuickBeam Tech. Co.,Ltd.

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

12 Scopus citations

Abstract

Ti6.5Al2Zr1Mo1V was fabricated via electron beam selective melting (EBSM) with different process parameters to study the diversity of microstructure. Results demonstrate that samples with a flat surface can be obtained when the ratio of beam current to scanning speed fluctuated between 5.0 and 7.5 as other parameters were fixed. Basketweave structure and Widmanstatten structure were observed to co-exist in EBSM-built samples under different parameters, while martensite phase α′ was more likely to form under low beam current and high scanning speed. Samples with a mixture of (α′ + α + β) phases possess a higher strength and lower plasticity than that with fully lamellar (α + β) phases due to the stress concentration at the α′/β interface in inhomogeneous microstructure.

Original language	English
Article number	130597
Journal	Materials Letters
Volume	304
DOIs	https://doi.org/10.1016/j.matlet.2021.130597
State	Published - 1 Dec 2021

Keywords

Diverse microstructure
Electron beam selective melting
Martensite phase
Mechanical properties
Titanium alloys

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10.1016/j.matlet.2021.130597

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title = "Diverse microstructure of Ti6.5Al2Zr1Mo1V fabricated via electron beam selective melting",

abstract = "Ti6.5Al2Zr1Mo1V was fabricated via electron beam selective melting (EBSM) with different process parameters to study the diversity of microstructure. Results demonstrate that samples with a flat surface can be obtained when the ratio of beam current to scanning speed fluctuated between 5.0 and 7.5 as other parameters were fixed. Basketweave structure and Widmanstatten structure were observed to co-exist in EBSM-built samples under different parameters, while martensite phase α′ was more likely to form under low beam current and high scanning speed. Samples with a mixture of (α′ + α + β) phases possess a higher strength and lower plasticity than that with fully lamellar (α + β) phases due to the stress concentration at the α′/β interface in inhomogeneous microstructure.",

keywords = "Diverse microstructure, Electron beam selective melting, Martensite phase, Mechanical properties, Titanium alloys",

author = "Jixin Yang and Tian Chen and Yongjiang Huang and Hongge Li and Chao Guo and Jianfei Sun",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

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doi = "10.1016/j.matlet.2021.130597",

language = "英语",

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journal = "Materials Letters",

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TY - JOUR

T1 - Diverse microstructure of Ti6.5Al2Zr1Mo1V fabricated via electron beam selective melting

AU - Yang, Jixin

AU - Chen, Tian

AU - Huang, Yongjiang

AU - Li, Hongge

AU - Guo, Chao

AU - Sun, Jianfei

PY - 2021/12/1

Y1 - 2021/12/1

N2 - Ti6.5Al2Zr1Mo1V was fabricated via electron beam selective melting (EBSM) with different process parameters to study the diversity of microstructure. Results demonstrate that samples with a flat surface can be obtained when the ratio of beam current to scanning speed fluctuated between 5.0 and 7.5 as other parameters were fixed. Basketweave structure and Widmanstatten structure were observed to co-exist in EBSM-built samples under different parameters, while martensite phase α′ was more likely to form under low beam current and high scanning speed. Samples with a mixture of (α′ + α + β) phases possess a higher strength and lower plasticity than that with fully lamellar (α + β) phases due to the stress concentration at the α′/β interface in inhomogeneous microstructure.

AB - Ti6.5Al2Zr1Mo1V was fabricated via electron beam selective melting (EBSM) with different process parameters to study the diversity of microstructure. Results demonstrate that samples with a flat surface can be obtained when the ratio of beam current to scanning speed fluctuated between 5.0 and 7.5 as other parameters were fixed. Basketweave structure and Widmanstatten structure were observed to co-exist in EBSM-built samples under different parameters, while martensite phase α′ was more likely to form under low beam current and high scanning speed. Samples with a mixture of (α′ + α + β) phases possess a higher strength and lower plasticity than that with fully lamellar (α + β) phases due to the stress concentration at the α′/β interface in inhomogeneous microstructure.

KW - Diverse microstructure

KW - Electron beam selective melting

KW - Martensite phase

KW - Mechanical properties

KW - Titanium alloys

UR - https://www.scopus.com/pages/publications/85111981567

U2 - 10.1016/j.matlet.2021.130597

DO - 10.1016/j.matlet.2021.130597

M3 - 文章

AN - SCOPUS:85111981567

SN - 0167-577X

VL - 304

JO - Materials Letters

JF - Materials Letters

M1 - 130597

ER -

Diverse microstructure of Ti6.5Al2Zr1Mo1V fabricated via electron beam selective melting

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Keywords

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