The use of fly-ash and rice-hull-ash in Al/SiCp composites: a comparative study of the corrosion and mechanical behavior

Pech‐Canul, M. A.; Escalera-Lozano, R.; Montoya-Dávila, M.

doi:10.1590/s1517-70762010000200020

Cited by 3 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is observed that the hardness values of the material are directly proportional to the presence of ZrO 2 and with the increase in ZrO 2 , the hardness value of the composites increases .The above graph shows the variation of Brinell hardness value for different compositions of ZrO 2 in LM25/ZrO 2 composites. Similar trends have been observed by many other researchers [11,13].…”

Section: Effect Of Hardnesssupporting

confidence: 92%

Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

Govindan¹,

Raghuvaran²,

Pandian

2017

Matéria (Rio J.)

View full text Add to dashboard Cite

In this paper aluminum (LM25) alloy was chosen as a base matrix metal, and it was reinforced with 0, 3, 6, 9, 12% of Zirconium dioxide (ZrO 2 ) particulates based on weight fraction method. Stir casting method was used to cast LM25/ZrO 2 composite material. The cast samples were subjected to physical and mechanical test viz, density, hardness, tensile, compression and impact test. The feasibility trial weld was carried out on the developed composite (similar metals) using Friction welding process (FSW) and then welded sample were prepared for the various test. The welded samples were subjected to various mechanical tests such as tensile, hardness and bend test to evaluate the strength of the friction welded joints. Then welded samples were also subjected to optical microscopy analysis to evaluate microstructures of the base and the weld regions. The tensile, hardness, compression and impact strength increases with increase in the percentage of ZrO 2 in LM25 alloy. The tensile, hardness and bending strength were high in the welded zone. The microstructures of the welded tensile tested specimen were analyzed using the Scanning Electron Microscopy (SEM) in a different region of the welded area. From the above results shows weldability of LM25/ZrO 2 composites was improved with the increase in weight percentage of ZrO 2 reinforcement.

show abstract

Section: Effect Of Hardnesssupporting

confidence: 92%

Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

Govindan¹,

Raghuvaran²,

Pandian

2017

Matéria (Rio J.)

View full text Add to dashboard Cite

show abstract

“…This prevented the formation of phases like Mg 2 Si and Al 4 C 3 that are commonly observed with Al-Si alloy. 27,28 Reinforcement presence are more along the outer layer (Figure 2(a)) due to the accelerated movement of SiC particles with higher rotational speed. However, the rotational speed was identified optimum facilitating a graded distribution rather than a layered microstructure.…”

Section: Metallographical Examinationsmentioning

confidence: 99%

Tribological and mechanical characterization of as-cast and thermal treated Al-9Si/SiC graded composite

Radhika

Sam

Thangamayandi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Tribology and mechanical properties of thermal treated Al-9Si/10wt%SiC functionally graded composite are compared with as-cast condition. The composite was centrifugally cast as a hollow cylindrical component (Ø(outer) 100 × Ø(inner) 60 × 100 mm), characterized at three wall layers (up to 3, 10, and 18 mm) from the outer periphery. Metallographic analysis on as-cast composite and thermal treated components revealed graded structure and spheroidization of acicular Si, respectively. Elemental mapping and phase formations were confirmed through Energy-dispersive Spectroscopy (EDS) and X-Ray Diffraction (XRD) analysis. Outer layer of thermal treated component revealed maximum improvement in hardness (26%) and tensile strength (15%) compared to as-cast. Brittle mode of failure was featured through fractography. A combination of adhesive and abrasive mechanisms were predominant during reciprocating wear. EDS analysis of wear debris formed at intermediate sliding distance (1250 m) confirmed the oxide layer formation. Thus, the thermal treated composites are developed for automotive engine components vulnerable to wear.

show abstract

“…As a result, the number of corrosion initiation sites increases. Moreover, several works have shown that fly ash reacts with molten Aluminum to form several intermetallic compounds and oxides such as Mg2Si [14], [15], MgAl2O4 [16], and FeSiAl5 [14]. Such intermetallic compounds behave as an anode in the galvanic system.…”

Section: Fig 1 Sem Image Of Flyash Particles and Flakesmentioning

confidence: 99%

Corrosion Investigation and Microstructure of High Calcium Fly Ash Reinforced Al6061

Kosasang

Kummoo

Konghakot

et al. 2019

KEM

View full text Add to dashboard Cite

In this study, the effect of high Ca fly ash on the corrosion behavior and microstructure of Al6061 alloy matrix composite was investigated. The Al6061 matrix composites containing 5, 7, and 10 wt% of fly ash particles were prepared by the stir casting process. The corrosion behavior was investigated using potentiodynamic polarization measurement using 5 wt% NaCl. The results revealed that the Icorr increased from 2.44 µA/cm2 to 8.60 µA/cm2 as the fly ash concentration increased from 5 wt% to 10 wt%. This increase of Icorr indicates an increase of the corrosion rate. The corrosion mainly occurs at the interface between fly ash particles and Al 6061 matrix.

show abstract

The use of fly-ash and rice-hull-ash in Al/SiCp composites: a comparative study of the corrosion and mechanical behavior

Cited by 3 publications

References 7 publications

Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

Weldability Study of LM25/ZrO2 Composites by Using Friction Welding

Tribological and mechanical characterization of as-cast and thermal treated Al-9Si/SiC graded composite

Corrosion Investigation and Microstructure of High Calcium Fly Ash Reinforced Al6061

Contact Info

Product

Resources

About