Effect of process parameters on bead properties of A359/SiC MMCs welded by laser

Bassani, Paola; Capello, E.; Colombo, Daniele; Previtali, Barbara; Vedani, Maurizio

doi:10.1016/j.compositesa.2006.04.014

Cited by 79 publications

(38 citation statements)

References 13 publications

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“…In addition, the Al 4 C 3 formation reduces the toughness of the weld bead, even it results in the increase of hardness (Bassani et al, 2007). Therefore, preventing the formation of the Al 4 C 3 during welding process is important for successful welding of Al-SiC composites (Wang et al, 2000).…”

Section: Fig 2 Al-c Phase Diagrammentioning

confidence: 99%

See 1 more Smart Citation

Micro-Welding of Super Thermal Conductive Composite by Pulsed Nd:YAG Laser

Ismail¹,

Okamoto²,

Okada³

2012

Nd YAG Laser

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Section: Fig 2 Al-c Phase Diagrammentioning

confidence: 99%

“…Therefore, the development of reliable and economic joining technique is important for extending the applications of MMCs. It is well-known that laser welding is the most flexible and versatile welding technology, and it has succeeded in the welding of MMCs (Niu et al, 2006;Bassani et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Micro-Welding of Super Thermal Conductive Composite by Pulsed Nd:YAG Laser

Ismail¹,

Okamoto²,

Okada³

2012

Nd YAG Laser

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“…Experimental investigations were carried out by Bassani et al [18], on key-hole and conduction laser welding of A356-20% SiC composite with two different laser sources viz. CO 2 and diode laser respectively.…”

Section: Investigation On Al-sic MMCmentioning

confidence: 99%

Review on experimental study of Nd:YAG laser beam welding, with a focus on aluminium metal matrix composites

Banerjee¹,

Biswal²,

Lohar³

et al. 2016

IJET

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The demand for high performance materials particularly in aviation and automobile industries gradually increases, CO 2 and Nd: YAG lasers are becoming most popular in processing these advanced materials. In this context, one of the most important process is joining by welding. It has been a constant endeavour by researchers to explore various methods and techniques to enhance the process efficiency of autogenous Nd: YAG laser welding of various materials i.e. without any filler materials. In this work, we present a comprehensive review of major research findings for the last decades or so, obtained by researchers about the effect of process parameters on autogenous laser beam welding (LBW) process performance. Main objective of such experimental research was to improve laser weld quality such as tensile strength, weld micro structure, heat affected zone (HAZ), weld penetration etc. In this paper, discussions are also made about different parameter optimisation techniques, design of experiments (DOE), modelling and simulation techniques, adopted by different researchers to achieve optimum weld quality. This review tries to bring out a foresight for direction of further research needed in this field.

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“…These phases may act as stress concentration source and thus have a negative influence on mechanical properties. It is suggested that minimum superheating and short melting time [12][13], the use of silicon filler or silicon containing matrix alloy [14], and the use of titanium filler [15][16] would be recommended for Al-SiC MMCs; while aluminium matrix with magnesium content lower than 1 wt% would be preferred for AI-AI2O3 MMCs [17].…”

Section: Introductionmentioning

confidence: 99%

Joining of Al-B4C metal matrix composites by laser welding and friction stir welding /

Guo¹

2012

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AI-B4C MMCs are important materials as neutron absorber in spent nuclear fuel storage and transportation due to their high boron ( 10 B) concentration and thus high neutron absorption capability. However, wide application of these materials is still limited due to the lack of suitable joining techniques to fully take advantage of the materials. Problems such as porosity and chemical reaction between Al matrix and B4C particles can arise during fusion welding of the material. Therefore, the present study is intended to find effective and reliable welding techniques for AI-B4C MMCs. The weldability of AA1100-16%B 4 C (particle size: 11 pirn) and AA1100-30%B 4 C MMCs (median particle size: 15 pirn) was evaluated using laser welding and friction stir welding. In comparison with conventional arc welding techniques, the deep and narrow fusion zones associated with laser welding can result in smaller heat affected zones, and thus less thermal distortion and mechanical property degradation. On the other hand, friction stir welding, as a solid state process, seems promising as it can avoid various problems that may otherwise be encountered during fusion welding of MMCs.For laser welding without filler, it was found that most B4C particles were decomposed during welding leading to formation of needle-like AIB2 and AI3BC phases in the weld. In this case, a joint efficiency of 63% (UTS) after tensile test was obtained. The variation of laser power from 2 to 4 kW and welding speed from 1 to 2.5 m/min did not affect the needle-like morphology. Based on thermodynamic calculation, Ti filler was used as the filler material aiming to improve the properties of laser joints. It was found that the addition of Ti with 150 |nm thick foil increased the joint efficiency to 75% due to the decrease of size and quantities of needle-like phases. The addition of Ti with filler wire instead of Ti foil did not show significant mechanical property improvement due to the Ti segregation and microstructure inhomogeneity in the weld zone.On the other hand, the feasibility of friction stir welding for joining AA1100 based metal matrix composites reinforced with B 4 C particulate was studied for 16 and 30%B 4 C volume concentrations. For both composites, friction stir welding has a significant influence on the particle size distribution and the matrix grain size. For the AA1100-16%B4C composite, the average particle size decreases after welding by -20% and the grain size from 15 to 5 [xm as measured in the weld nugget. Tensile testing of welded joints showed up to 100% joint efficiency for both annealed AA1100-16%B 4 C and AA1100-30%B4C composite materials. However, if the ultimate tensile strength values of all the studied composites are similar at -130 MPa, the weld ductility is higher for the annealed materials. In addition, it was observed that varying the welding speed between 100 and 275 mm/min does not influence the joint tensile properties and the particle size distribution in the nugget. Furthermore, a welding tool made of WC-Co show...

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Effect of process parameters on bead properties of A359/SiC MMCs welded by laser

Cited by 79 publications

References 13 publications

Micro-Welding of Super Thermal Conductive Composite by Pulsed Nd:YAG Laser

Micro-Welding of Super Thermal Conductive Composite by Pulsed Nd:YAG Laser

Review on experimental study of Nd:YAG laser beam welding, with a focus on aluminium metal matrix composites

Joining of Al-B4C metal matrix composites by laser welding and friction stir welding /

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