Effect of hot dip aluminising on interfacial microstructure and mechanical properties of Ti/Al joint by TIG arc welding brazing

L. Wan; S. Lv; Y. Huang; Y. Xu; Q. Cui

doi:10.1179/1362171814Y.0000000267

Effect of hot dip aluminising on interfacial microstructure and mechanical properties of Ti/Al joint by TIG arc welding brazing

L. Wan
, S. Lv
, Y. Huang^*
, Y. Xu
, Q. Cui

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
CAS - Changchun Institute of Optics Fine Mechanics and Physics

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

23 Scopus citations

Abstract

The joint of Al 5A06 and aluminised Ti-6Al-4V dissimilar alloys was achieved by means of tungsten inert gas arc welding brazing. The effect of aluminized coating on the spreading behaviour of filler metal on Ti substrate was studied. The spreadability of liquid filler metal on the Ti substrate was enhanced obviously due to the presence of aluminised coating. The interfacial reaction layer was characterised by a uniform lamellar layer of TiAl₃ intermetallic, with a thickness of 1 μm. Sound joints with well appearance were obtained, and the optimised tensile strength of the joint reached 216 MPa. The failure initiated from the interfacial layer at the root face and then propagated within the weld seam at the upper part of the joint. Capable welding parameters were broadened by the presence of aluminised coating for dissimilar metal joining of Ti/Al.

Original language	English
Pages (from-to)	164-171
Number of pages	8
Journal	Science and Technology of Welding and Joining
Volume	20
Issue number	2
DOIs	https://doi.org/10.1179/1362171814Y.0000000267
State	Published - 2015

Keywords

Arc welding brazing
Hot dip aluminising
Intermetallic compound
Ti/Al

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10.1179/1362171814Y.0000000267

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title = "Effect of hot dip aluminising on interfacial microstructure and mechanical properties of Ti/Al joint by TIG arc welding brazing",

abstract = "The joint of Al 5A06 and aluminised Ti-6Al-4V dissimilar alloys was achieved by means of tungsten inert gas arc welding brazing. The effect of aluminized coating on the spreading behaviour of filler metal on Ti substrate was studied. The spreadability of liquid filler metal on the Ti substrate was enhanced obviously due to the presence of aluminised coating. The interfacial reaction layer was characterised by a uniform lamellar layer of TiAl3 intermetallic, with a thickness of 1 μm. Sound joints with well appearance were obtained, and the optimised tensile strength of the joint reached 216 MPa. The failure initiated from the interfacial layer at the root face and then propagated within the weld seam at the upper part of the joint. Capable welding parameters were broadened by the presence of aluminised coating for dissimilar metal joining of Ti/Al.",

keywords = "Arc welding brazing, Hot dip aluminising, Intermetallic compound, Ti/Al",

author = "L. Wan and S. Lv and Y. Huang and Y. Xu and Q. Cui",

note = "Publisher Copyright: {\textcopyright} 2015, Institute of Materials, Minerals and Mining.",

year = "2015",

doi = "10.1179/1362171814Y.0000000267",

language = "英语",

volume = "20",

pages = "164--171",

journal = "Science and Technology of Welding and Joining",

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}

TY - JOUR

T1 - Effect of hot dip aluminising on interfacial microstructure and mechanical properties of Ti/Al joint by TIG arc welding brazing

AU - Wan, L.

AU - Lv, S.

AU - Huang, Y.

AU - Xu, Y.

AU - Cui, Q.

PY - 2015

Y1 - 2015

N2 - The joint of Al 5A06 and aluminised Ti-6Al-4V dissimilar alloys was achieved by means of tungsten inert gas arc welding brazing. The effect of aluminized coating on the spreading behaviour of filler metal on Ti substrate was studied. The spreadability of liquid filler metal on the Ti substrate was enhanced obviously due to the presence of aluminised coating. The interfacial reaction layer was characterised by a uniform lamellar layer of TiAl3 intermetallic, with a thickness of 1 μm. Sound joints with well appearance were obtained, and the optimised tensile strength of the joint reached 216 MPa. The failure initiated from the interfacial layer at the root face and then propagated within the weld seam at the upper part of the joint. Capable welding parameters were broadened by the presence of aluminised coating for dissimilar metal joining of Ti/Al.

AB - The joint of Al 5A06 and aluminised Ti-6Al-4V dissimilar alloys was achieved by means of tungsten inert gas arc welding brazing. The effect of aluminized coating on the spreading behaviour of filler metal on Ti substrate was studied. The spreadability of liquid filler metal on the Ti substrate was enhanced obviously due to the presence of aluminised coating. The interfacial reaction layer was characterised by a uniform lamellar layer of TiAl3 intermetallic, with a thickness of 1 μm. Sound joints with well appearance were obtained, and the optimised tensile strength of the joint reached 216 MPa. The failure initiated from the interfacial layer at the root face and then propagated within the weld seam at the upper part of the joint. Capable welding parameters were broadened by the presence of aluminised coating for dissimilar metal joining of Ti/Al.

KW - Arc welding brazing

KW - Hot dip aluminising

KW - Intermetallic compound

KW - Ti/Al

UR - https://www.scopus.com/pages/publications/84921736919

U2 - 10.1179/1362171814Y.0000000267

DO - 10.1179/1362171814Y.0000000267

M3 - 文章

AN - SCOPUS:84921736919

SN - 1362-1718

VL - 20

SP - 164

EP - 171

JO - Science and Technology of Welding and Joining

JF - Science and Technology of Welding and Joining

IS - 2

ER -

Effect of hot dip aluminising on interfacial microstructure and mechanical properties of Ti/Al joint by TIG arc welding brazing

Abstract

Keywords

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