ASSIGNMENT 1 Name : Rizky Nur Fadhillah NPM : 1006660270 Lecturer : Prof. Dr . Ir. Bondan T. Sofyan, M.Si. QUESTION 1 A. In you r own words , desc ribe what is a metal ?! Metal is the abundant natural resources in this earth. Resource that can be changed into more useful something and have more selling points. Metal’s most widely used by humans because they have favorable properties such as high strength, can be as a conductor of heat and electricity and the most important of metal’s properties are readily deformable and ductility. There are several ways of metal forming process, namely Forging, casting, stamping and Extrusion. Most elements in the periodic table aremetals B. What m akes metal s are commo nly du ctile ? The freedom of conduction electrons to migrate gives metal atoms, or layers of them, the capacity to slide past each other. Locally bonds can easily be broken and replaced by new ones after the deformation. But this process does not affect the communal metallic bonding very much. Because of that, metal have a ductile ability C. Are me tallic materia ls usually crystalline o r amor phous? Of fer your explanation. Cryst alline material s have atoms whic h are arrang ed in a regular or recurri ng at long distances. Metals have metallic bonding where metal ions have been composed ofsolid and very good. Therefore I think metal is a crystalline material. D. Give three examples of engineerin g applic ation of met als !
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Metal is the abundant natural resources in this earth. Resource that can be changed
into more useful something and have more selling points. Metal’s most widely used
by humans because they have favorable properties such as high strength, can be as a
conductor of heat and electricity and the most important of metal’s properties arereadily deformable and ductility. There are several ways of metal forming process,
namely Forging, casting, stamping and Extrusion. Most elements in the periodic table
are metals
B. What makes metals are commonly ductile?
The freedom of conduction electrons to migrate gives metal atoms, or layers of them,
the capacity to slide past each other. Locally bonds can easily be broken and replaced
by new ones after the deformation. But this process does not affect the communal
metallic bonding very much. Because of that, metal have a ductile ability
C. Are metallic materials usually crystalline or amorphous? Offer your explanation.
Crystalline materials have atoms which are arranged in a regular or recurring at long
distances. Metals have metallic bonding where metal ions have been composed of
solid and very good. Therefore I think metal is a crystalline material.
D. Give three examples of engineering application of metals !