Laser welding of 2198-T851 Al-Li alloy with filler wire

Kaili Lin; Wuxiong Yang; Ting Huang; Rongshi Xiao

doi:10.3788/AOS201535.s216001

Laser welding of 2198-T851 Al-Li alloy with filler wire

Kaili Lin, Wuxiong Yang, Ting Huang, Rongshi Xiao

ENG - Materials Processing

Beijing University of Technology

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

Abstract

2198-T851 Aluminum-Lithium alloy is a new high-strength material with low density, high specific strength, good corrosion resistance and well properties in low temperature condition. 2198-T851 with a thickness of 1.8 mm is welded with 2319 filler wire (Al-Cu) by using 6 kW fiber laser on butt welding. The effect of welding parameters on the weld formation and hot cracking are investigated, as well as testing the mechanical properties of the joint and analyzing of fracture morphology. The results indicate that a good joint with well weld formation and no hot cracks is obtained under the appropriate laser power, welding speed and wire feeding rate. The average tensile strength of joint reaches to 272 MPa and the extension rate of joint is 1.6%, the tensile fracture happens in the weld zone with ductile fracture characteristics.

Original language	English
Article number	s216001
Journal	Guangxue Xuebao/Acta Optica Sinica
Volume	35
DOIs	https://doi.org/10.3788/AOS201535.s216001
Publication status	Published - 2015 Sept 10

Keywords

Aluminum-Lithium alloy
Fiber laser
Hot cracking
Laser technique
Microstructure and property
Weld formation

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10.3788/AOS201535.s216001

Cite this

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title = "Laser welding of 2198-T851 Al-Li alloy with filler wire",

abstract = "2198-T851 Aluminum-Lithium alloy is a new high-strength material with low density, high specific strength, good corrosion resistance and well properties in low temperature condition. 2198-T851 with a thickness of 1.8 mm is welded with 2319 filler wire (Al-Cu) by using 6 kW fiber laser on butt welding. The effect of welding parameters on the weld formation and hot cracking are investigated, as well as testing the mechanical properties of the joint and analyzing of fracture morphology. The results indicate that a good joint with well weld formation and no hot cracks is obtained under the appropriate laser power, welding speed and wire feeding rate. The average tensile strength of joint reaches to 272 MPa and the extension rate of joint is 1.6%, the tensile fracture happens in the weld zone with ductile fracture characteristics.",

keywords = "Aluminum-Lithium alloy, Fiber laser, Hot cracking, Laser technique, Microstructure and property, Weld formation",

author = "Kaili Lin and Wuxiong Yang and Ting Huang and Rongshi Xiao",

year = "2015",

month = sep,

day = "10",

doi = "10.3788/AOS201535.s216001",

language = "English",

volume = "35",

journal = "Guangxue Xuebao/Acta Optica Sinica",

issn = "0253-2239",

publisher = "Chinese Optical Society",

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TY - JOUR

T1 - Laser welding of 2198-T851 Al-Li alloy with filler wire

AU - Lin, Kaili

AU - Yang, Wuxiong

AU - Huang, Ting

AU - Xiao, Rongshi

PY - 2015/9/10

Y1 - 2015/9/10

N2 - 2198-T851 Aluminum-Lithium alloy is a new high-strength material with low density, high specific strength, good corrosion resistance and well properties in low temperature condition. 2198-T851 with a thickness of 1.8 mm is welded with 2319 filler wire (Al-Cu) by using 6 kW fiber laser on butt welding. The effect of welding parameters on the weld formation and hot cracking are investigated, as well as testing the mechanical properties of the joint and analyzing of fracture morphology. The results indicate that a good joint with well weld formation and no hot cracks is obtained under the appropriate laser power, welding speed and wire feeding rate. The average tensile strength of joint reaches to 272 MPa and the extension rate of joint is 1.6%, the tensile fracture happens in the weld zone with ductile fracture characteristics.

AB - 2198-T851 Aluminum-Lithium alloy is a new high-strength material with low density, high specific strength, good corrosion resistance and well properties in low temperature condition. 2198-T851 with a thickness of 1.8 mm is welded with 2319 filler wire (Al-Cu) by using 6 kW fiber laser on butt welding. The effect of welding parameters on the weld formation and hot cracking are investigated, as well as testing the mechanical properties of the joint and analyzing of fracture morphology. The results indicate that a good joint with well weld formation and no hot cracks is obtained under the appropriate laser power, welding speed and wire feeding rate. The average tensile strength of joint reaches to 272 MPa and the extension rate of joint is 1.6%, the tensile fracture happens in the weld zone with ductile fracture characteristics.

KW - Aluminum-Lithium alloy

KW - Fiber laser

KW - Hot cracking

KW - Laser technique

KW - Microstructure and property

KW - Weld formation

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JO - Guangxue Xuebao/Acta Optica Sinica

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M1 - s216001

ER -

Laser welding of 2198-T851 Al-Li alloy with filler wire

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Keywords

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