Free Essays on Alloy to Get Inspired & Learn by Example

Abstract

The aim of this paper is to investigate an effect of aging time on mechanical properties and wear characteristics of Al12Si3Cu1Mg1.78Ni alloy. This alloy is used for aluminium piston parts. The solution treatment was carried out at 500oC for 5 hours followed by water quenching. Subsequent aging was carried out at 1800C with various solution treatments times for 1, 2, 4, 6, 8, 9, 10, 12, 16, 20 and 24 hours. As-cast microstructure of this alloy contains eutectic Si, Mg2Si, Al2Cu, Al3Ni and various other intermetallic phases. After solution treatment, the flake like and acicular eutectic silicon appears to Continue reading...

A Study on the effects of Squeeze Pressure on Microstructure, Mechanical Properties, and Wear Characteristics of Near-Eutectic Al-Si Piston Alloys with variable Cu contents.

Abstract:

This paper discusses the effects of squeeze pressure on the microstructure, wear characteristics and the mechanical properties of near eutectic Al-Si piston alloys with variable Copper (Cu) content. The paper starts with a description of Al-Si alloys and the features that make them desirable for use as piston alloys. The impact of alloying elements on the mechanical properties, microstructure and wear characteristics are also discussed where it is determined that adding alloying elements such as Continue reading...

Abstract:

In this research, the effects of pressure on the wear resistance characteristics, mechanical properties and the microstructures of Al-Si piston alloys that have variable Magnesium (Mg) content is studied. The paper begins with an explanation of the desirable properties of eutectic Al-Si alloys and why their chemical and mechanical properties are desirable in the fabrication of light weight machine components. The methods of strengthening the alloys further using alloying elements such as Ni, Cu and Mg, and applying heat treatment are also discussed. The paper also places major emphasis on the addition of Magnesium, and compares the traditional gravity Continue reading...

[The electron flow will be from the steel on the left to the brass on the right. The steel is undergoing oxidation, not the brass, so the steel will corrode. ]
When two different materials are welded or bolted in an electrolyte (sea water) the uncoupled corrosion rate of the least noble (anodic positive) is increased, and the uncoupled corrosion rate of the noble (cathodic negative) is decreases.

P0 is penetration of anodic metal without coupling
E (cell) = ER - EL Where, E cell is the potential of cell, ER is the right side electrode potential, and
EL is the Continue reading...

Question 1: (Metallic Materials)

Recrystallization:
This is the process of growth of grain fragments in an alloy when it’s being worked on. This affects materials properties and services while in use.
Examples such as steel’s properties are affected such that there is reduction in strength and hardness of the material and this affects its applications and behavior in service. Other materials such as copper are affected in the same way.

Hot or cold working:

Hot or cold working involves hardening of materials and also and also heating the material. Iron is an example and is affected by hot working where it can be cast in Continue reading...

Introduction

Metals has played crucial role in the development and improvement of modern and historical society. Metal resources are derived from the earth’s crust or from recycling of the metal discarded after their use in the economy. When the used metals are not efficiently recovered from the economy, people will increase their use of the primary resources and therefore affecting the nature by increasing various metals dispersions in the ecosystem (environmental pollution). Industrial society values the use of metals such as aluminium, because of their useful properties such as strength, (Wernick and N.J. Themelis, 1998).
Among the earth’s Continue reading...

Sodium-cooled Fast Reactors (SFR)

The sodium-cooled fast reactor is a 4th generation reactor project that provides a basis upon which the design of an advanced fat neutron reactor is developed. The project relies on two projects called the LMFBR and integral fast reactor. The objective of the project is to produce a fast spectrum reactor that can be cooled by sodium. Nuclear power plants use these reactors for the production of nuclear power using nuclear fuel (Lee & Brun, 2014). The nuclear fuel cycle has two options from the actinide recycle. The first option involves the intermediate size of sodium-cooled reactor. The size range Continue reading...

The use of electricity and magnetism has helped in making life easier and cheaper. However, the ready availability of the products has contributed to the embracement by most people. Nonetheless, the technological advancements and innovations have also led to the adoption of the use of electricity and magnets in the transport sector. Therefore, the movement of the people and goods has increased thereby leading to the efficacy in the production. The scientists developed the urge to reduce the high pollution rates that from the emissions from the vehicles. For this reason, they developed a way of incorporation of either Continue reading...

Nuclear Reactor and its Basic Structure

Ever since the development of the first “generation” of commercially produced nuclear reactors in the 1950s, scientists and nuclear physicists have strived to improve the safety and efficiency standards of nuclear energy to make it less costly but more viable to those who want to harness this type of technology.
The World Nuclear Association (2015) defined an nuclear reactor as the one that is splits the atoms of certain radioactive elements or the fission of the atoms, control the reaction caused by nuclear fission, and harness the energy produced by the splitting and control to convert it to electricity. Continue reading...

In the today’s world, many people have adopted the use of electricity and magnetism in the different field of the daily lives. However, the advancement in the technology has also contributed to the growth in the application of the magnets and electricity in the transportation sector. For this reason, many physicians should conduct adequate research to help in the development of the transport sector. Additionally, they would also help to reduce the air pollution that comes from the emission of the gases from the fuels that the cars use. Consequently, the adoption of the electricity and magnetism in Continue reading...