Three-dimensional analysis of the growth of intermetallics phases between solid steel and molten aluminium

Zhang, Ningxin; Wosik, J.; Fragner, Werner; Sonnleitner, Robert; Nauer, Gerhard

doi:10.1016/j.intermet.2009.07.017

Cited by 8 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The majority IMC at the interface is believed to be FeAl 3 or Fe 4 Al 13 according to the EDS results, although some papers described the existence of Fe 2 Al 5 . 1,[30][31][32][33][34] However, the addition of Al powder with different content into the flux changed the IMC thickness significantly. As illustrated in Fig.…”

Section: Effect Of Modified Flux On Interface Microstructurementioning

confidence: 99%

Flux modification for AC-TIG braze welding of aluminium to stainless steel

Yang

Lin

et al. 2014

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

A modified flux consisting of KAlF 4 and aluminium powder was developed for AC-TIG braze welding of aluminium to stainless steel. By employing the flux, the arc instability and wetting angle was decreased significantly, and therefore a good joint shape was obtained. The wetting and spreading behaviour as well as the action mechanism of the flux were changed. Microstructure analysis suggested that the intermetallic compound (IMC) thickness increased obviously when the addition percentage of aluminium powder in the flux exceeded 40 wt-%. Results of tensile tests illustrated that a significant improvement in mechanical properties of the butt joint was obtained with the modified flux, and tensile strength increased from 125 to 170 MPa in maximum. Relationships between aluminium powder content in the flux and wetting angle, IMC thickness as well as tensile strength were established. Results indicated that the joint strength was affected both by weld shape and IMC thickness.

show abstract

Section: Effect Of Modified Flux On Interface Microstructurementioning

confidence: 99%

Flux modification for AC-TIG braze welding of aluminium to stainless steel

Yang

Lin

et al. 2014

Science and Technology of Welding and Joining

View full text Add to dashboard Cite

show abstract

“…It can be seen that the interface (interface I) between intermetallic compound and substrate of DSSs is quite homogeneous and well attached to the substrate, except 4A, which has a micro‐crack there, while the tongue‐like morphology is presented in the interface I of H13 (Fig. e), which is consistent with literatures . The morphologies of the interface (interface II) between intermetallic compound and liquid Al are different from each other.…”

Section: Resultsmentioning

confidence: 60%

“…well. As reported by many literatures, the intermetallic compounds in the middle layer of H13 is composited of outer FeAl 3 phase and inner Fe 2 Al 5 phase. Further examination of the composition of intermetallic compound layer of DSSs was carried out subsequently.…”

Section: Resultsmentioning

confidence: 99%

Interfacial reactions of duplex stainless steels with molten aluminum

Zhang

Chen

2015

Surf. Interface Anal.

View full text Add to dashboard Cite

The morphology and constitution of the intermetallic layers formed on the surface of duplex stainless steels (DSSs) immersed in molten aluminum at 750 °C for 30 min have been studied in detail by scanning electron microscopy and electron probe micro‐analyzer. Compared with H13 steel, the DSSs exhibited a better corrosion resistance. The weight loss rates, as expressed in terms of weight loss per square centimeter of the specimen per minute, of DSSs are smaller than that of H13. The thickness of the intermetallic layers of DSSs is comparatively thinner. And the interface between the intermetallic layers and DSSs substrate is much flatter. The intermetallic layers of duplex stainless steels are consisted of inner continuous (Fe,Cr)2Al5 phase and outer porous (Fe,Cr)Al3 phases. Microstructure observations suggest that the retarded interfacial reaction between DSSs and molten aluminum is associated with a continuous Al‐Fe‐Cr intermetallic phases layer formed on the solid/liquid interface, which acts as an effective diffusion barrier. The precipitation phase particles distributed along the austenite/ferrite and ferrite/ferrite interfaces also had a good effect on the corrosion resistance properties of DSSs to molten aluminum. Copyright © 2015 John Wiley & Sons, Ltd.

show abstract

“…Three tests were performed for each kind of current collector surface structure under a testing speed of 50 mm min -1 . After testing, the percentage of the residual graphite particles on the structured Cu foils was analyzed with image processing software through assigning different colors to graphite particles and Cu foil respectively [14]. The electrochemical impedance spectra (EIS) of the coin cells were measured with an impedance analyzer (Princeton Application Inc., USA) in a frequency range of 10 -2 -10 6 Hz with 10 mV as the oscillation voltage.…”

Section: Microstructure Analysis and Electrochemical Characterizationmentioning

confidence: 99%

Laser structured Cu foil for high-performance lithium-ion battery anodes

et al. 2017

Self Cite

View full text Add to dashboard Cite

To improve interface adhesion between anode film and Cu foil, ultrafast laser structuring was implemented to construct dot patterns with a variety of periodic spacing (25, 50, and 75 lm) on Cu foil. The microstructure and electrochemical performance of anode films coated on those structured Cu foils were characterized. It was shown that adhesive force of the electrodes increased as periodic distance between the dots on the Cu foil decreased. Comparison of XRD patterns of the wet slurries with the dried anode films showed that after drying in the case of 50 lm period dot structured Cu foils the most graphite particles were aligned with the c-axis, vertical to the Cu foil surface. EIS, CV, and rate capability measurements confirmed that the anode film on the 50 lm dot period Cu foil had the lowest impedance, strongest lithiation and de-lithiation peaks, and highest discharge capacity. The cycling test carried out under C/2 rate confirmed that the cells with the 50 lm dot interval Cu foil showed the highest capacity retention. We inferred that this was due to the relatively shorter diffusive path in the anode due to vertical orientation of more graphite particles against the laser structured Cu foil.

show abstract

Three-dimensional analysis of the growth of intermetallics phases between solid steel and molten aluminium

Cited by 8 publications

References 12 publications

Flux modification for AC-TIG braze welding of aluminium to stainless steel

Flux modification for AC-TIG braze welding of aluminium to stainless steel

Interfacial reactions of duplex stainless steels with molten aluminum

Laser structured Cu foil for high-performance lithium-ion battery anodes

Contact Info

Product

Resources

About