Microstructure characteristics of laser forming repaired Ti60 alloy

Yanhong Liu; Jing Chen; Qiang Zhang; Lei Xue; Xin Lin; Weidong Huang

doi:10.3788/COL201109.071402

Microstructure characteristics of laser forming repaired Ti60 alloy

Yanhong Liu, Jing Chen, Qiang Zhang, Lei Xue, Xin Lin, Weidong Huang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

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Abstract

The microstructure characteristics of laser forming repaired (LFR) Ti60 (Ti-5.6Al-4.8Sn-2Zr-1Mo-0.35Si-0.3Nb) as-deposited and annealed samples are analyzed. The microstructure of as-deposited repaired zone (RZ) consists of epitaxial columnar prior β grains, in which fine woven α laths and β-phase between α laths exist. The heat-affected zone (HAZ) experiences a continuous microstructural transition from duplex microstructure of the base metal zone (BMZ) to the microstructure of RZ. The presence of silicide precipitates is observed in both RZ and BMZ in an annealed sample by transmission electron microscopy. They are identified as (Ti, Zr)₆Si₃ distributed mainly at the α/β interface with the size of 100-300 nm. The fine α₂ precipitates are detected in BMZ by electron diffraction; there was no α₂ detected in RZ.

Original language	English
Article number	071402
Journal	Chinese Optics Letters
Volume	9
Issue number	7
DOIs	https://doi.org/10.3788/COL201109.071402
State	Published - Jul 2011

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title = "Microstructure characteristics of laser forming repaired Ti60 alloy",

abstract = "The microstructure characteristics of laser forming repaired (LFR) Ti60 (Ti-5.6Al-4.8Sn-2Zr-1Mo-0.35Si-0.3Nb) as-deposited and annealed samples are analyzed. The microstructure of as-deposited repaired zone (RZ) consists of epitaxial columnar prior β grains, in which fine woven α laths and β-phase between α laths exist. The heat-affected zone (HAZ) experiences a continuous microstructural transition from duplex microstructure of the base metal zone (BMZ) to the microstructure of RZ. The presence of silicide precipitates is observed in both RZ and BMZ in an annealed sample by transmission electron microscopy. They are identified as (Ti, Zr)6Si3 distributed mainly at the α/β interface with the size of 100-300 nm. The fine α2 precipitates are detected in BMZ by electron diffraction; there was no α2 detected in RZ.",

author = "Yanhong Liu and Jing Chen and Qiang Zhang and Lei Xue and Xin Lin and Weidong Huang",

year = "2011",

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doi = "10.3788/COL201109.071402",

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TY - JOUR

T1 - Microstructure characteristics of laser forming repaired Ti60 alloy

AU - Liu, Yanhong

AU - Chen, Jing

AU - Zhang, Qiang

AU - Xue, Lei

AU - Lin, Xin

AU - Huang, Weidong

PY - 2011/7

Y1 - 2011/7

N2 - The microstructure characteristics of laser forming repaired (LFR) Ti60 (Ti-5.6Al-4.8Sn-2Zr-1Mo-0.35Si-0.3Nb) as-deposited and annealed samples are analyzed. The microstructure of as-deposited repaired zone (RZ) consists of epitaxial columnar prior β grains, in which fine woven α laths and β-phase between α laths exist. The heat-affected zone (HAZ) experiences a continuous microstructural transition from duplex microstructure of the base metal zone (BMZ) to the microstructure of RZ. The presence of silicide precipitates is observed in both RZ and BMZ in an annealed sample by transmission electron microscopy. They are identified as (Ti, Zr)6Si3 distributed mainly at the α/β interface with the size of 100-300 nm. The fine α2 precipitates are detected in BMZ by electron diffraction; there was no α2 detected in RZ.

AB - The microstructure characteristics of laser forming repaired (LFR) Ti60 (Ti-5.6Al-4.8Sn-2Zr-1Mo-0.35Si-0.3Nb) as-deposited and annealed samples are analyzed. The microstructure of as-deposited repaired zone (RZ) consists of epitaxial columnar prior β grains, in which fine woven α laths and β-phase between α laths exist. The heat-affected zone (HAZ) experiences a continuous microstructural transition from duplex microstructure of the base metal zone (BMZ) to the microstructure of RZ. The presence of silicide precipitates is observed in both RZ and BMZ in an annealed sample by transmission electron microscopy. They are identified as (Ti, Zr)6Si3 distributed mainly at the α/β interface with the size of 100-300 nm. The fine α2 precipitates are detected in BMZ by electron diffraction; there was no α2 detected in RZ.

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DO - 10.3788/COL201109.071402

M3 - 文章

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SN - 1671-7694

VL - 9

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 7

M1 - 071402

ER -

Microstructure characteristics of laser forming repaired Ti60 alloy

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