Si diffusion behavior during laser welding-brazing of Al alloy and Ti alloy with Al-12Si filler wire

Abstract To avoid the formation of Ti-Ni intermetallics in a joint, three laser welding processes for Ti alloy–NiTi alloy joints were introduced. Sample A was formed while a laser acted at the Ti alloy–NiTi alloy interface, and the joint fractured along the weld centre line immediately after welding without filler metal. Sample B was formed while the laser acted on a Cu interlayer. The average tensile strength of sample B was 216 MPa. Sample C was formed while the laser acted 1.2 mm on the Ti alloy side. The one-pass welding process involved the creation of a joint with one fusion weld and one diffusion weld separated by the remaining unmelted Ti alloy. The mechanical performance of sample C was determined by the diffusion weld formed at the Ti alloy–NiTi alloy interface with a tensile strength of 256 MPa.

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Diffusion of Ce-Al Melts Measured by Sliding Cell Technique

Materials Science Forum ◽

10.4028/www.scientific.net/msf.898.679 ◽

2017 ◽

Vol 898 ◽

pp. 679-683

Author(s):

Cheng Chen ◽

Jin Liang Hu ◽

Lang Xiang Zhong ◽

Bo Zhang

Keyword(s):

Activation Energy ◽

Temperature Dependence ◽

Strong Interaction ◽

Al Alloy ◽

Diffusion Behavior ◽

Diffusion Constants

The diffusion behavior of Ce-Al alloy melt at three temperatures of 943K, 953K and 963K was investigated by sliding shear method. The inter-diffusion constants D show Arrhenius-type temperature dependence in the investigated regimes. Compared with the previous results achieved in Ce-Cu melt, liquid Ce-Al displays a much slower diffusion behavior and rather higher activation energy ED, which was caused by the strong interaction between Ce and Al.

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Nd:YAG pulsed laser welding of TC4 Ti alloy to 301L stainless steel using Ta/V/Fe composite interlayer

Materials Letters ◽

10.1016/j.matlet.2017.10.057 ◽

2018 ◽

Vol 212 ◽

pp. 54-57 ◽

Cited By ~ 17

Author(s):

Y. Zhang ◽

D.Q. Sun ◽

X.Y. Gu ◽

Z.Z. Duan ◽

H.M. Li

Keyword(s):

Stainless Steel ◽

Laser Welding ◽

Pulsed Laser ◽

Ti Alloy ◽

Pulsed Laser Welding

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Characteristics of keyhole and molten pool during laser welding of TC4 Ti-alloy

Proceedings of the 36th International MATADOR Conference ◽

10.1007/978-1-84996-432-6_129 ◽

2010 ◽

pp. 591-594 ◽

Cited By ~ 4

Author(s):

Duan Aiqin ◽

Chen Li

Keyword(s):

Laser Welding ◽

Molten Pool ◽

Ti Alloy

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Optimization of weld bead geometry in laser welding with filler wire process using Taguchi’s approach

Optics & Laser Technology ◽

10.1016/j.optlastec.2012.03.033 ◽

2012 ◽

Vol 44 (7) ◽

pp. 2020-2025 ◽

Cited By ~ 49

Author(s):

Yang dongxia ◽

Li xiaoyan ◽

He dingyong ◽

Nie zuoren ◽

Huang hui

Keyword(s):

Laser Welding ◽

Weld Bead ◽

Bead Geometry ◽

Filler Wire ◽

Weld Bead Geometry

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Dendritic Boundary Corrosion of AA2198 Weld Using Fiber Laser Welding with Al–Cu Filler Wire

Acta Metallurgica Sinica (English Letters) ◽

10.1007/s40195-017-0698-9 ◽

2017 ◽

Vol 31 (7) ◽

pp. 735-741 ◽

Cited By ~ 2

Author(s):

Jun-Xia Lu ◽

Ling Chang ◽

Shi-Kai Wu ◽

Shi-Kun Yin

Keyword(s):

Laser Welding ◽

Fiber Laser ◽

Filler Wire ◽

Fiber Laser Welding

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Comparative Study of Surface Contaminated Layer on Titanium Aluminum Alloy and Titanium Alloy Investment Castings

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1035.602 ◽

2021 ◽

Vol 1035 ◽

pp. 602-607

Author(s):

Zhi Hua Feng ◽

Xian Fei Ding ◽

Xin Feng ◽

Hai Nan ◽

Ai Bin Zhang

Keyword(s):

Titanium Alloy ◽

Aluminum Alloy ◽

Comparative Study ◽

Chemical Reaction ◽

Microhardness Measurement ◽

Ceramic Mold ◽

Al Alloy ◽

Ti Alloy ◽

Titanium Aluminum ◽

Alloy Castings

A comparative study of the surface contaminated layer formed by chemical reaction between ceramic-mold and titanium aluminum alloy castings or titanium alloy castings were carried out. The morphology, thickness and hardness of the surface contaminated layer were characterized by means of metalloscopy and microhardness measurement. The results show that surface contaminated layers formed between Ti-Al alloy castings and ceramic-mold, also formed between Ti alloy castings and ceramic-mold. The surface contaminated layers of Ti-Al alloy castings were continuous and compact, their thickness was about 0~90 μm. The surface contaminated layers of titanium alloy castings were not even, their thickness was 0~900 μm. Titanium alloy is more liable to react with the ceramic -mold than the Ti-Al alloy.

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