Journal ArticleDOI
Strengthening mechanisms in ultrasonically processed aluminium matrix composite with in-situ Al3Ti by salt addition
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Al3Ti reinforced Aluminium composites with different weight percent of Al3Ti particles were developed by in-situ reaction of aluminium alloy with potassium hexafluorotitanate (K2TiF6) as discussed by the authors.Abstract:
Al3Ti reinforced Aluminium composites with different weight percent of Al3Ti particles were developed by in-situ reaction of aluminium alloy with potassium hexafluorotitanate (K2TiF6). Ultrasonication of the aluminium melt during salt reaction was carried out to refine the cast microstructure and achieve better dispersion of in-situ formed Al3Ti particles. The in-situ composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The Al3Ti particles generated in the melt promoted heterogeneous nucleation, which was responsible for grain refinement of the cast microstructure. The well dispersed Al3Ti significantly improved the mechanical properties including ductility, yield strength (YS), ultimate tensile strength (UTS) and hardness. The dominant strengthening mechanism in the composite was the thermal mismatch strengthening followed by Hall-Petch strengthening.read more
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Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite
TL;DR: In this paper, the effects of friction stir welding (FSW) on the metallurgical and mechanical properties of aluminum matrix composite (AMC) joints were investigated. And the results indicated that the fatigue life of the cross-welded joints varies with grain size in the nugget zone and it is lower than that of the base metal.
Journal ArticleDOI
Ultrasound assisted in-situ casting technique for synthesizing small-sized blocky Al3Ti particles reinforced A356 matrix composites with improved mechanical properties
Cuicui Yang,Zhiwei Liu,Qiaoling Zheng,Yiliang Cao,Xiaohan Dai,Liang Sun,Jingrui Zhao,Jiandong Xing,Qingyou Han +8 more
TL;DR: In this paper, the in-situ 5'wt% Al3Ti/A356 composites with high strength and good ductility were prepared from A356-K2TiF6 system by an ultrasound assisted in-Situ casting technique at 800'°C.
Journal ArticleDOI
On the preparation and mechanical properties of in situ small-sized TiB2/Al-4.5Cu composites via ultrasound assisted RD method
Jun Liu,Zhiwei Liu,Zhiwu Dong,Xiaole Cheng,Qiaoling Zheng,Jing Li,Sha Zuo,Zhifu Huang,Yimin Gao,Jiandong Xing,Qingyou Han +10 more
TL;DR: In this article, small-sized TiB2/Al-4.5Cu composites with high strength and good ductility were prepared via an ultrasound assisted re-melting and diluting (RD) approach.
Journal ArticleDOI
Processing Methods and Mechanical Properties of Aluminium Matrix Composites
TL;DR: The most well-known processing techniques of AMCs such as stir casting, powder metallurgy, spark plasma sintering, squeeze casting, friction stir processing, liquid metal infiltration, spray codeposition, and reactive in situ techniques have elaborated here with their respective distinguishing features and mechanical properties of the fabricated composites as mentioned in this paper.
Journal ArticleDOI
Wire-arc additive manufacturing of a novel high-performance Al-Zn-Mg-Cu alloy: Processing, characterization and feasibility demonstration
Thomas Klein,Martin Schnall,Bianca Gomes,Piotr Warczok,Dominik Fleischhacker,Paulo J. Morais +5 more
TL;DR: In this article, a novel Alloy system based on the Al-Zn-Mg-Cu system and successfully processed by wire-arc additive manufacturing (WAAM) without the occurrence of any hot cracks.
References
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