HR-TEM observation of laser pressure weld of galvannealed steel and pure aluminium

Nishimoto, Koji; Okumoto, Yoshihiro; Harano, Tomoki; Atagi, Ken; Fujii, Hiroo; Katayama, Seiji

doi:10.1080/09507110902842919

Cited by 8 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[14][15][16] was confirmed as FeZn 10 by TEM. The formation of Fe 2 Al 5 À x Zn x was apparently attributed to the diffusion and dissolution of Fe atoms towards the FZ and some Al atoms substituted by Zn atoms [21].…”

Section: Resultsmentioning

confidence: 84%

“…They were confirmed by TEM as discussed later. This dispersed phase FeZn 10 was mainly nano-sized and rich in Zn, which was expected to correspond to the Zn-rich phases found but not identified in the literature [14][15][16]. In addition to Fe 2 Al 5 À x Zn x and FeZn 10 observed in zone A, a rod-like structure was formed at the intermediate zone B, as shown in Fig.…”

Section: Methodsmentioning

confidence: 81%

“…Mathieu et al [13] claimed that the interfacial IMCs were Fe 2 Al 5 and FeAl 3 . Nonetheless, most of the related literature reported that Fe-Al-Zn IMCs and an unidentified Zn-rich phase were formed in the interfacial region [14][15][16]. For example, Nishimoto et al [15] found that with these kinds of interfacial phases, the laser joint exhibited a desirable joint strength even though the IMCs layer was up to 20 μm thick, which was twice the critical thickness ($ 10 μm) for obtaining sound Al/steel joints.…”

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Control of interfacial intermetallic compounds in Fe–Al joining by Zn addition

Yang

Zhang

et al. 2015

Materials Science and Engineering: A

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Control of interfacial intermetallic compounds in Fe–Al joining by Zn addition

Yang

Zhang

et al. 2015

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…Laser pressure welding, as a unique pressure welding method, takes advantage of the high reflection of the laser beam to the metal material and then realises joining metals under pressure [19]. Based on the results of laser pressure welding of dissimilar aluminium and steel [20][21][22][23], the formation of IMCs can be effectively inhibited at the ultra-high welding speed and the growth of that can be suppressed by heating or melting a very thin layer of the metal surface. Moreover, Zhang et al [24,25] realised fibre laser pressure welding of aluminium or copper at high welding speed.…”

Section: Introductionmentioning

confidence: 99%

Laser pressure welding of dissimilar aluminium and copper: microstructure and mechanical property

Zhang

Guo

Wang

et al. 2022

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

In this work, laser pressure welding of dissimilar aluminium and copper was conducted at a high welding speed of 15 m min −1 . One-micron intermetallic compounds (IMCs) layer with heterogeneous dual-phases (copper and γ -Al 4 Cu 9 phases) laminates in the joint interface were observed by transmission electron microscopy. The results showed that the combination of two joining mechanisms led to improved mechanical property, namely the mechanical interlocking due to the curved interface and the metallurgical bonding by the presence of the thin IMCs layer with heterogeneous laminates. The tensile shear force and the shear strength of the joint reached 2055 N and 111.94 MPa, respectively. The present study provides a more efficient method to join dissimilar aluminium and copper.

show abstract

“…Surface modification or composite of materials is performed by various methods. 1,2) These composites are intended to impart the necessary properties to the material surface, and industrially, an atmosphere control device and advanced equipment for heating are required. The authors have found a method of generating a coating layer consisting of particle stacks by cold rolling of composite materials.…”

Section: Introductionmentioning

confidence: 99%

Structures and Hardness of Materials Formed by Melting and Liquid Diffusion of Mg Alloy Substrate with Pure Al Surface

Otsubo

2020

Mater. Trans.

View full text Add to dashboard Cite

In this study, pure Al powder was compression molded on the surface of flame-retardant Mg alloy plate, and integration of pure Al and Mg alloy was attempted by melting and solidification in air. In order to integrate different materials by liquid diffusion of metal elements, the structure, composition phase and hardness of the formed integrated materials were investigated. It was found that heating the specimens for 180 s results in melting and liquid diffusion between Al and Mg. When heated and melted with pure Al down and Mg alloy up (Type B), shrinkage cavity was formed on the former Mg alloy side of the former Al/former Mg alloy interface. When heated at 450 s, the specimen was composed of AlMg system stable phases of Al 3 Mg 2 and Al 12 Mg 17 , and AlMg system metastable phases of Al 0.37 Mg 0.63 and Al 0.1 Mg 0.9. In Type A with pure Al up and Mg alloy down and Type B, stable phases of Al 3 Mg 2 and Al 12 Mg 17 were formed on the former Al side. The constituent phase of the former Mg alloy side was composed of metastable phases of Al 0.37 Mg 0.63 and Al 0.1 Mg 0.9 , but the structure morphologies of Type A and B differed near the surface of the former Mg alloy side, and the primary phase was Al 0.37 Mg 0.63 and Al 0.1 Mg 0.9 respectively. The final solidification phase consisted of eutectic phases of Al 0.37 Mg 0.63 and Al 0.1 Mg 0.9. The hardness on the former Al side was about 250 HV, and the hardness on the former Mg alloy side had decreased. Type B was evaluated to be lower than Type A.

show abstract

HR-TEM observation of laser pressure weld of galvannealed steel and pure aluminium

Cited by 8 publications

References 4 publications

Control of interfacial intermetallic compounds in Fe–Al joining by Zn addition

Control of interfacial intermetallic compounds in Fe–Al joining by Zn addition

Laser pressure welding of dissimilar aluminium and copper: microstructure and mechanical property

Structures and Hardness of Materials Formed by Melting and Liquid Diffusion of Mg Alloy Substrate with Pure Al Surface

Contact Info

Product

Resources

About