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Marble dust is a construction waste material from the processing of marble producing rocks. In this work, the usability of waste marble dust as a reinforcement in the development of Aluminium Metal matrix alloy has been investigated for use in bearing application. The flexural strength and SIF kept onincreasing continuously with increase in reinforcement content up to 10 wt% marble dust while Compressive strength and impact strength showed improvement for the marble dust concentration. Engine bearings are used under increasingly severe temperature and loads. In various condition there isproblem of low fatigue resistance for this Aluminium Metal matrix alloy with the use of marble sludgein bearing production is defined. This paper presents the marble waste powder in various ranges, resulting in higher compressive power, tensile splitting strength and bending strength as specimens. As review, Stir Casting can be used to make this composite and can evaluate its mechanical properties, thermo-mechanical behavior by different methods. [ABSTRACT FROM AUTHOR]

The engineering of a new class of material known as metal-matrix composites involves the reinforcement of aluminum and its alloys with various reinforcing powders. The addition of ceramic particles is expected to increase the mechanical property-to-weight ratio of pure aluminum and its alloys, as well as their wear resistance and high specific hardness. However, due to an inadequate production technique and process conditions, the insertion of non-deformable ceramic reinforcements results in a considerable loss of ductility and toughness. Friction stir processing technique is the name of the fabrication method employed in this study. A solid state processing technique called FSP has been used to change microstructures. Using SEM, the microstructures of the composites were examined, and Otsu Image Thresholding Technique was used to forecast the grain sizes inside the microstructure. The segmented image's mean particle size for one-pass FSP was 2.69x103µm at an X155 magnification. The flow mechanism in the friction stir process is illustrated by the observation that 2.69x103µm particle size for two passes showed less spherical structures and more irregular structures. The three-pass sample yielded a mean particle size of 1.36x103µm, which indicates a more uniform distribution within the matrix and a considerable size reduction in comparison to those obtained from one pass and two passes. A finite element analysis tool called ABAQUS was utilized to predict how this heat would affect the quality of the composites. With less than 15°C separating the processing temperatures between the experimental and simulated data, the peak temperature increased as the tool rotated in accordance with the projected temperature history of FSP for the composites at various tool rotating speeds. [ABSTRACT FROM AUTHOR]

The objective of this research is to assess the removal rate of material in comparison to the removal rate of material in machining aluminum alloy AA7075 using high steel HSS M42 tools and coated tools of Chromium. The experiment was conducted for two different groups, Group 1 (HSS M42) and Group 2 (chromium nitride coated tools). The volume of the sample material is 20 mm in diameter and 15 mm in thickness. The alloy of aluminum AA7075 had the material composition used to cut. The material removal rate was compared with two different tools in regards to necessity and the readings obtained are documented. The statistical significance of the differences was determined using the SPSS statistical software. It was deduced from the outcomes that the removal rate of High speed steel HSS M42 and the novel tool coating with a chromium nitride coating on the tool are both calculated from the test data and compared. The value of significance obtained from the statistical analysis was 0.041, which is less than 0.05, thus the difference in significance was observed between the two groups. Within the range, it was observed that the material removal rate of the new tool's coating with CrN was superior to the High speed steel M42 tool. [ABSTRACT FROM AUTHOR]

Aluminum and its alloys are used to make a number of automotive components. It is due to aluminum's light weight, anti-corrosiveness, formability, and affordable price. However, numerous procedures have been carried out to boost its strength due to mechanical characteristics, one of which is artificial aging. The effects of aging on the fatigue life of aluminum 2024-T351 will be examined in this study. The technique of treating the solution involved heating it to 500 oC for an hour and then immediately cooling it to room temperature. By reheating the aluminum alloy to 180 oC and maintaining heat there for a variety of 2, 4, and 6 hours, the fake aging process was continued. The goal was to obtain various precipitation types in anticipation of an increase in the material's fatigue life. Then, a reversed bending test was carried out with loads of 1.0, 0.9, 0.7, 0.5, and 0.4 σu. The results of the study indicated that aging time had an influence on the fatigue life of aluminum alloy 2024-T351. Fatigue life lengthens with increasing aging time. The increase in fatigue life ranges from 13.3–63.3% compared to aluminum without heat treatment. [ABSTRACT FROM AUTHOR]