Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Archives of Metallurgy and Materials

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Investigation on the Microstructure, Microhardness and Tensile Strength of Stir-Casted A713-TiB2 Composites

Rangrej Shyam, Pandya Shailesh, Menghani Jyoti

Archives of Metallurgy and Materials

2024

Vol. 69, iss. 3

1251--1260

A parametric experimental investigation has been conducted to investigate effects of stir casting process parameters on recently developed A713-TiB2 composites. The manufacturing process involved varying the stirring time (5, 10, and 15 minutes) and speed of stirring (500, 600 & 700 rpm). The microstructure and mechanical properties of the manufactured composites were evaluated by analyzing the effects of the varying stirring speeds and times. The analysis techniques used include optical microscopy (OM), scanning electron microscopy (SEM), micro-hardness and tensile testing. Grain size analysis of the as-cast MMCs revealed that coarser grain structure was observed at lower stirring time and lower speed. Finer grain structure was achieved by increasing stirring time and speed. Microhardness and tensile strength was observed to be affected by both stirring speed and stirring time, as demonstrated by the test results. The uniform dispersion was attained when stirring was done at 600 rpm for 10 minutes. Further increase in stirring speed and stirring time leads to the reduction in microhardness and tensile strength. In the present study, the relationship between the microstructure and mechanical properties of the A713-TiB2 composite and the processing parameters such as stirring speed and stirring time have been investigated.

Effect of Stir Casting Process Parameters and Stirrer Blade Geometry on Mechanical Properties of Al MMCs - A Review

Morsiya Chintan, Pandya Shailesh

Archives of Metallurgy and Materials

2023

Vol. 68, iss. 4

1473--1495

Aluminium matrix composites offer a combination of properties such as lower weight, higher strength, higher wear resistance and many more. The stir casting process is easy to use, involves low cost and is suitable for mass production compared to other manufacturing processes. An in-depth look at recently manufactured aluminium matrix composites and their impact on particle distribution, porosity, wettability, microstructure and mechanical properties of Al matrix composites have all been studied in relation to stirring parameters. Several significant concerns have been raised about the sample’s poor wettability, porosity and particle distribution. Mechanical, thermal, and tribological properties are frequently studied in conjunction with variations in reinforcement proportion but few studies on the effect of stirrer blade design and parameters such as stirrer shape, dimensions and position have been reported. To study the effect of stirrer blade design on particle distribution, computational fluid dynamics is used by researchers. Reported multiphysics models were k-ε model and the k-ω model for simulation. It is necessary to analyse these models to determine which one best solves the real-time problem. Stirrer design selection and analysis of its effect on particle distribution using simulation, while taking underlying physics into account, can be well-thought-out as a future area of research in the widely adopted stir casting field.