Microstructure and Properties Analysis of Laser Welding and Laser Weld Bonding Mg to Al Joints

Liu, Liming; Wang, Hongyang

doi:10.1007/s11661-010-0521-y

Cited by 28 publications

(10 citation statements)

References 17 publications

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“…In addition, it was clarified that the joint fractured portion was affected to IMC interlayer, of which thickness was below 1 μm, although the joint had 100% joint efficiency. The similar IMC interlayer was also observed in some dissimilar joints in other welding method such as diffusion welding [31], friction stir welding [32], friction stir spot welding [33], ultrasonic welding [34], explosion welding [35], laser welding [36], and roll welding [37].…”

Section: Properties Of As-welded Jointsupporting

confidence: 68%

Joint properties of friction welded joint between pure magnesium and pure aluminium with post-weld heat treatment

2015

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Section: Properties Of As-welded Jointsupporting

confidence: 68%

Joint properties of friction welded joint between pure magnesium and pure aluminium with post-weld heat treatment

2015

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“…At the same time, the gasification of the adhesive caused a baffle effect on the diffusion between the Mg and Al alloy. There, the thickness of the intermetallic compounds was reduced, which improved the LWBed joint [ 80 , 81 ].…”

Section: Fusion Weldingmentioning

confidence: 99%

A Review of Dissimilar Welding Techniques for Magnesium Alloys to Aluminum Alloys

2014

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Welding of dissimilar magnesium alloys and aluminum alloys is an important issue because of their increasing applications in industries. In this document, the research and progress of a variety of welding techniques for joining dissimilar Mg alloys and Al alloys are reviewed from different perspectives. Welding of dissimilar Mg and Al is challenging due to the formation of brittle intermetallic compound (IMC) such as Mg17Al12 and Mg2Al3. In order to increase the joint strength, three main research approaches were used to eliminate or reduce the Mg-Al intermetallic reaction layer. First, solid state welding techniques which have a low welding temperature were used to reduce the IMCs. Second, IMC variety and distribution were controlled to avoid the degradation of the joining strength in fusion welding. Third, techniques which have relatively controllable reaction time and energy were used to eliminate the IMCs. Some important processing parameters and their effects on weld quality are discussed, and the microstructure and metallurgical reaction are described. Mechanical properties of welds such as hardness, tensile, shear and fatigue strength are discussed. The aim of the report is to review the recent progress in the welding of dissimilar Mg and Al to provide a basis for follow-up research.

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“…Previous researchers have focused their work on controlling the reaction between Mg and Al to a minimum level to minimize the formation of Mg-Al IMCs. The authors have used the following welding processes: TIG [4], spot welding [5], MIG [6], laser [7,8], laser-MIG hybrid [9], friction stir welding [10,11] and diffusion bonding [12] between others. However, the formation of Mg/Al IMCs is still.…”

Section: Introductionmentioning

confidence: 99%

Light-Weight Mg/Al Dissimilar Structures Welded by CW Laser for Weight Saving Applications

Gao

Meco

Wang

et al. 2017

Communications in Computer and Information Science

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With the increasing demand of lightweight alloys, such as magnesium (Mg) and aluminum (Al), the need for joining these two alloys is unavoidable. In this study, AZ31B Mg and 1060 Al alloys were joined by continuous wave laser micro-welding using a 0.05 mm thick Cu/Zn interlayer. The microstructure and phases constituent of the weld seam were examined by optical microscope, SEM and EDS. The formation and distribution of the intermetallic compounds (IMCs) and the relationship between these structures and the microhardness of the weld were discussed in detail. The effect of Cu/Zn interlayer on the performance of Mg/Al joint was also analyzed. The results showed that Mg/Al IMCs were formed in the weld, which indicates that the Cu/Zn foil could not prevent the reaction between Mg and Al. However, the addition of Cu and Zn into the weld pool refined the microstructure by improving the number of eutectic structures. The micro-hardness of Mg/Al IMCs in the middle of the weld was very high which can be detrimental to the toughness of the Mg/Al joints.

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Microstructure and Properties Analysis of Laser Welding and Laser Weld Bonding Mg to Al Joints

Cited by 28 publications

References 17 publications

Joint properties of friction welded joint between pure magnesium and pure aluminium with post-weld heat treatment

Joint properties of friction welded joint between pure magnesium and pure aluminium with post-weld heat treatment

A Review of Dissimilar Welding Techniques for Magnesium Alloys to Aluminum Alloys

Light-Weight Mg/Al Dissimilar Structures Welded by CW Laser for Weight Saving Applications

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