Laser welding of Ti6Al4V assisted with nanostructured Ni/Al reactive multilayer films

Hong Li; Ying Ma; Baozhen Xu; Denzel Bridges; Lingyue Zhang; Z. Feng; Anming Hu

doi:10.1016/j.matdes.2019.108097

Laser welding of Ti6Al4V assisted with nanostructured Ni/Al reactive multilayer films

Hong Li, Ying Ma, Baozhen Xu, Denzel Bridges, Lingyue Zhang, Z. Feng, Anming Hu

Materials Joining

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

20 Scopus citations

Abstract

In this paper, the nanostructured reactive multilayer films (RMFs) are used as the intermediate layer to assist laser welding of Ti6Al4V alloy. During the welding process, the heat of the laser ignites the RMFs, and the heat released by the RMFs reaction instantaneously reaches the liquidus temperature in the center of the joint. This new joining method is helpful in reducing the laser energy input, minimizing the increasing brittleness and reducing strength effect of heat affected zone of the titanium alloy base material, and increase the joint strength of welds. The experiment confirmed that the joint with the Ni/Al RMFs as the intermediate layer can achieve a shear strength of 396 MPa at 700 W laser power, which is 3 times as high as that of the direct laser welded joints without using Ni/Al RMFs at the same power. Moreover, the Ni/Al RMFs as an intermediate layer can reduce the laser power required for welding by 10–20% without lowering the joint strength.

Original language	English
Article number	108097
Journal	Materials and Design
Volume	181
DOIs	https://doi.org/10.1016/j.matdes.2019.108097
State	Published - Nov 5 2019

Funding

This work was supported in part by National Natural Science Foundation of China (NSFC) under grant number 51475007 and 51575016 , and Beijing Municipal Natural Science Foundation ( 3172006 ). I agree with: the plan to submit to Materials & Design; the contents of the manuscript; to being listed as an author; and to the conflicts of interest statement are directly related to the research of 12National Natural Science Foundation of China (NSFC) under grant number 51475007 and 51575016 , and 12Beijing Municipal Natural Science Foundation ( 3172006 ). I have had access to all the data in the study and accept responsibility for its validity.

Funders	Funder number
12Beijing Municipal Natural Science Foundation
National Natural Science Foundation of China	51475007, 51575016
Beijing Municipal Natural Science Foundation	3172006

Keywords

Intermediate layer
Laser welding
RMFs
Ti6Al4V

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10.1016/j.matdes.2019.108097

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title = "Laser welding of Ti6Al4V assisted with nanostructured Ni/Al reactive multilayer films",

abstract = "In this paper, the nanostructured reactive multilayer films (RMFs) are used as the intermediate layer to assist laser welding of Ti6Al4V alloy. During the welding process, the heat of the laser ignites the RMFs, and the heat released by the RMFs reaction instantaneously reaches the liquidus temperature in the center of the joint. This new joining method is helpful in reducing the laser energy input, minimizing the increasing brittleness and reducing strength effect of heat affected zone of the titanium alloy base material, and increase the joint strength of welds. The experiment confirmed that the joint with the Ni/Al RMFs as the intermediate layer can achieve a shear strength of 396 MPa at 700 W laser power, which is 3 times as high as that of the direct laser welded joints without using Ni/Al RMFs at the same power. Moreover, the Ni/Al RMFs as an intermediate layer can reduce the laser power required for welding by 10–20% without lowering the joint strength.",

keywords = "Intermediate layer, Laser welding, RMFs, Ti6Al4V",

author = "Hong Li and Ying Ma and Baozhen Xu and Denzel Bridges and Lingyue Zhang and Z. Feng and Anming Hu",

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T1 - Laser welding of Ti6Al4V assisted with nanostructured Ni/Al reactive multilayer films

AU - Li, Hong

AU - Ma, Ying

AU - Xu, Baozhen

AU - Bridges, Denzel

AU - Zhang, Lingyue

AU - Feng, Z.

AU - Hu, Anming

PY - 2019/11/5

Y1 - 2019/11/5

N2 - In this paper, the nanostructured reactive multilayer films (RMFs) are used as the intermediate layer to assist laser welding of Ti6Al4V alloy. During the welding process, the heat of the laser ignites the RMFs, and the heat released by the RMFs reaction instantaneously reaches the liquidus temperature in the center of the joint. This new joining method is helpful in reducing the laser energy input, minimizing the increasing brittleness and reducing strength effect of heat affected zone of the titanium alloy base material, and increase the joint strength of welds. The experiment confirmed that the joint with the Ni/Al RMFs as the intermediate layer can achieve a shear strength of 396 MPa at 700 W laser power, which is 3 times as high as that of the direct laser welded joints without using Ni/Al RMFs at the same power. Moreover, the Ni/Al RMFs as an intermediate layer can reduce the laser power required for welding by 10–20% without lowering the joint strength.

AB - In this paper, the nanostructured reactive multilayer films (RMFs) are used as the intermediate layer to assist laser welding of Ti6Al4V alloy. During the welding process, the heat of the laser ignites the RMFs, and the heat released by the RMFs reaction instantaneously reaches the liquidus temperature in the center of the joint. This new joining method is helpful in reducing the laser energy input, minimizing the increasing brittleness and reducing strength effect of heat affected zone of the titanium alloy base material, and increase the joint strength of welds. The experiment confirmed that the joint with the Ni/Al RMFs as the intermediate layer can achieve a shear strength of 396 MPa at 700 W laser power, which is 3 times as high as that of the direct laser welded joints without using Ni/Al RMFs at the same power. Moreover, the Ni/Al RMFs as an intermediate layer can reduce the laser power required for welding by 10–20% without lowering the joint strength.

KW - Intermediate layer

KW - Laser welding

KW - RMFs

KW - Ti6Al4V

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JO - Materials and Design

JF - Materials and Design

M1 - 108097

ER -

Laser welding of Ti6Al4V assisted with nanostructured Ni/Al reactive multilayer films

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Keywords

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