Microstructure evolution of Ti2AlNb-based alloy by laser solid forming

Guozheng Jiang; Jing Chen; Xin Lin; Xiaoming Zhao; Weidong Huang

Microstructure evolution of Ti₂AlNb-based alloy by laser solid forming

Guozheng Jiang, Jing Chen, Xin Lin, Xiaoming Zhao, Weidong Huang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

4 Scopus citations

Abstract

Microstructure evolution and hardness distribution of as-deposited Ti₂AlNb-based alloy by laser solid forming (LSF) was investigated through SEM, XRD and TEM. The results indicate that the LSFed T₂AlNb-based alloy was constituted of B₂/β₀ phase (ordered-bbc) and O phase (orthorhombic). The as-deposited phase in the bottom and top area of the LSF Ti₂AlNb-based alloy sample is B₂ phase (Nb-based solid solution), while the phase in the middle area is O phase Widmanstǎttem. The phase evolution through bottom→middle→top is B₂/β₀ →B₂/β₀+ O→B₂/β₀. Therefore, the microhardness of the middle area for LSFed as-deposited Ti₂AlNb-based alloy is maximum, and that of the top and bottom is similar. The microhardness of the alloys increases with the laser power increasing.

Original language	English
Pages (from-to)	437-441
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	39
Issue number	3
State	Published - Mar 2010

Keywords

Laser solid forming (LSF)
Microstructures
O phase
TiAlNb-based alloy

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title = "Microstructure evolution of Ti2AlNb-based alloy by laser solid forming",

abstract = "Microstructure evolution and hardness distribution of as-deposited Ti2AlNb-based alloy by laser solid forming (LSF) was investigated through SEM, XRD and TEM. The results indicate that the LSFed T2AlNb-based alloy was constituted of B2/β0 phase (ordered-bbc) and O phase (orthorhombic). The as-deposited phase in the bottom and top area of the LSF Ti2AlNb-based alloy sample is B2 phase (Nb-based solid solution), while the phase in the middle area is O phase Widmanstǎttem. The phase evolution through bottom→middle→top is B2/β0 →B2/β0+ O→B2/β0. Therefore, the microhardness of the middle area for LSFed as-deposited Ti2AlNb-based alloy is maximum, and that of the top and bottom is similar. The microhardness of the alloys increases with the laser power increasing.",

keywords = "Laser solid forming (LSF), Microstructures, O phase, TiAlNb-based alloy",

author = "Guozheng Jiang and Jing Chen and Xin Lin and Xiaoming Zhao and Weidong Huang",

year = "2010",

month = mar,

language = "英语",

volume = "39",

pages = "437--441",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

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number = "3",

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TY - JOUR

T1 - Microstructure evolution of Ti2AlNb-based alloy by laser solid forming

AU - Jiang, Guozheng

AU - Chen, Jing

AU - Lin, Xin

AU - Zhao, Xiaoming

AU - Huang, Weidong

PY - 2010/3

Y1 - 2010/3

N2 - Microstructure evolution and hardness distribution of as-deposited Ti2AlNb-based alloy by laser solid forming (LSF) was investigated through SEM, XRD and TEM. The results indicate that the LSFed T2AlNb-based alloy was constituted of B2/β0 phase (ordered-bbc) and O phase (orthorhombic). The as-deposited phase in the bottom and top area of the LSF Ti2AlNb-based alloy sample is B2 phase (Nb-based solid solution), while the phase in the middle area is O phase Widmanstǎttem. The phase evolution through bottom→middle→top is B2/β0 →B2/β0+ O→B2/β0. Therefore, the microhardness of the middle area for LSFed as-deposited Ti2AlNb-based alloy is maximum, and that of the top and bottom is similar. The microhardness of the alloys increases with the laser power increasing.

AB - Microstructure evolution and hardness distribution of as-deposited Ti2AlNb-based alloy by laser solid forming (LSF) was investigated through SEM, XRD and TEM. The results indicate that the LSFed T2AlNb-based alloy was constituted of B2/β0 phase (ordered-bbc) and O phase (orthorhombic). The as-deposited phase in the bottom and top area of the LSF Ti2AlNb-based alloy sample is B2 phase (Nb-based solid solution), while the phase in the middle area is O phase Widmanstǎttem. The phase evolution through bottom→middle→top is B2/β0 →B2/β0+ O→B2/β0. Therefore, the microhardness of the middle area for LSFed as-deposited Ti2AlNb-based alloy is maximum, and that of the top and bottom is similar. The microhardness of the alloys increases with the laser power increasing.

KW - Laser solid forming (LSF)

KW - Microstructures

KW - O phase

KW - TiAlNb-based alloy

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M3 - 文章

AN - SCOPUS:77952142495

SN - 1002-185X

VL - 39

SP - 437

EP - 441

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 3

ER -

Microstructure evolution of Ti₂AlNb-based alloy by laser solid forming

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Keywords

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