The obtained data is consistent to the hardness tester calibrations. The experiment was done through performing the different tests on metals having the hardness that is known. There was a close similarity between the experimental values and the published values of hardness. From the results, it is evidenced that cast iron was the hardest material followed by 1018 steel, brass and lastly aluminium. Aluminium is considered to be relatively durable, soft, lightweight, malleable and ductile metal having an appearance that ranges from silver towards dull grey. Its appearance is dependent on the roughness surface. Aluminium is nonmagnetic and has a low potential for ignition. An aluminium fresh field acts as a good visible light reflector and a delightful reflector of far and medium infrared radiations. Pure aluminium has the yield strength of 7 to 11 MPa whereas its alloy has a yield strength of about 200MPa-600MPa. Studies conducted on the hardness of aluminium found out that aluminium ’s hardness is one third that of steel. This research argued out that aluminium was less hard than steel. The hardness of cast iron was close to that of 1018 steel.On the other hand, the hardness of brass changes according to its treatment and preparation and treatment. The hardness may reduce whenever the annealation is done at temperatures that are elevated (Zhang 2). The acoustic and malleability characteristics of brass make the metal be extremely useful in musical instruments such as trumpets (Anyalebechi 2).
This paper explores a report on the use of the Rockwell test to determine the hardness of various materials. The key objectives are: to establish the hardness measurements of aluminium, brass, steel, and iron, and to compare and contrast the hardness of aluminium, brass, 1018 steel, and cast iron…
This experiment shows how materials behave under similar stress forces, and in addition it depicts how the strength and ductility of materials differ. Essentially, the experiment focuses on three different materials which portray different values of Young modulus, Yield strain and 0.1 percent proof stress.
Hardness refers to a measure of the extent of resistance for a solid matter towards different types of permanent shapes whenever some amount of force is applied to the solid matter. The macroscopic hardness is hardness with intermolecular bonds that are strong.
This implied that the part was fully martensitic.Critical rate of cooling is the cooling rate that must be exceeded to inhibit the formation of martensite products. Whenever the section size increased, it was hard to have the heat extracted fast to surpass the critical rate of cooling and avoid the establishment of the non-martensitic components.
When the material is pulled, one would be able to establish the strength of the material. In this regard, tensile testing can help one to develop an insight into various substances. Whenever one continues to pull on a material, the material will break hence one would get a recommendable profile of tensile.
All of the failures have resulted in broken connecting rods, which cause significant damage to the engine. The builder has experienced problems with two types of engines. The first type is drag race engines that utilize aluminum connecting rods. The other type of engine is used in oval track stock cars which use steel rods.
Many enzymes work well in a narrow range of pH. A change in pH may alter the three dimensional structure of the enzyme due to formation or breakage of covalent bonds within the enzyme. A change in the structure
The knowledge of hardenability of steal is essential as selection of the appropriate combination of alloy steel and heat treatment to manufacture of different components of different sizes to minimise thermal stresses and distortion is dependent on this process(B.V,
In essence, laboratory experiments are normally conducted in a careful manner in order to determine the mechanical properties of different materials when they reach breakage limit. Behavior of various mechanical materials
atoms and amount of light absorbed, therefore, we can determine the concentration of the sample by measuring the amount of light absorbed (Karabegov, 2011).
Samples have to be heated to extremely high temperatures in other to atomise them. The sample goes through a nebulizer
2 pages (500 words)Lab Report
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