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Does hardening of steel make it ductile or brittle?
more brittle
What are the characteristics of ceramics?
Physical properties means the behavior of materials in response to physical forces other than mechanical, such as; Volumetric, thermal, electric and electrochemical properties. Most Ceramics are lighter than metals but heavier than polymers. Most ceramics have a higher melting point than most metals as it is that some ceramics such as China can with stand high temperatures to about 1200 degrees centigrade. Ceramics also has lower Electrical and Thermal Conductivity than most metals but the range of value is greater in ceramics permitting some ceramics to be used as insulators, for example Porcelain insulators and others as conductors like Lithium-ion conducting glass-ceramics and oxide ceramics. Thermal expansion is another physical property of ceramics, Ceramic thermal expansion coefficients are less than those of metals but effects are more damaging in ceramics bringing about cracks and other failures(Thermal shock and thermal cracking) as for ceramic materials with relatively high thermal expansion and low thermal conductivity however there is glass ceramics that has low thermal expansion thus resisting thermal shock and thermal cracking, for example Pyrex glass ceramics. Thus the physical properties being but not limited to permeability, elasticity, considerable strength, hardness, brittleness, resistance to chemical attack and thermal shock.
What is a brittle material?
a brittle is something that breaks easily with out more opposition like bones for instance..
What happens to the yield strength of steel when carbon is added?
It will be lowered with the result that the steel becomes more brittle.
Why ceramics have low tensile strength?
Ceramics are generally hard and brittle because of the type of bonds that hold the atoms together in the material. Ceramics are made up of covalent, ionic, or both types of bonds.Covalent bonds are directional, which means that they form bonds only in specific directions and in a sense are more ordered/selective. So when a force is applied, the bonds will try very hard to resist deformation. As a result of this, the material is usually tough (toughness being defined as the ability of a material to absorb energy without rupture), but brittle when that threshold is passed.Although ionic bonds are nondirectional in nature (meaning they can form bonds in multiple directions) , we need to realize that we are dealing with charged particles that become unstable when they are placed under a force. You could almost think of it as bringing like charges closer together when a strong enough force is applied to the material, so that they repel each other.Hope that helps some, I think someone might want to expand on directional/nondirectional nature of bonds...(Another Solution)Ceramics tend to be strong but brittle because of the ionic bonding present between the metal and non-metal components of the material. Ionic bonds are very strong and require a relatively large amount of energy to break. However, once enough energy is applied to break the bonds, they break completely, making the material brittle. Covalently bonded materials like polymers are far less brittle because the covalent bonds can stretch during plastic deformation.
Does hardening of steel make it ductile or brittle?
more brittle
Why the machining of brittle material is easy than ductile material?
Very ductile material will often smear rather than cut during machining operations. Less ductile material (more brittle) will cut more easily.
Max principle stress theory is valid for which material?
For materials that are brittle rather than ductile. For ductile :max shear stress theory would be more suitable
Is polonium ductile?
This will help you. Phosphorus is not ductile or malleable. For one its a gas. But at room temperature, it hardens. Even when it hardens phosphorus isn't ductile or malleable because it is very brittle.
Is aluminium more ductile than high carbon steel?
Aluminium is ductile and has a low melting point and density.
Do ceramics expand more or less than metals?
Less.Less.Less.Less.
Is bronze a ductile material?
Well, it's pretty brittle, so relatively, no. More malleable than diamonds, less malleable than copper.
What is properties distinguish metals from nonmetals?
Metals are usually more conductive. They have higher boiling and melting points, and lower electronegativity than other elements. Also, Metals are malleable and ductile, whereas non metals are not.
Are Brittle rocks are more likely to fold then fault?
No, they're more likely to fault. Ductile rocks are more likely to fold.
Do all nonmetals have some similar physical properties?
Non-metals are much more diverse than metals, however, they all have some similar physical properties. Non-metals are not good conductors of heat or electricity. Solids are usually brittle, non-ductile, not shiny, and at least partially transparent or translucent.
Why is metallic solids malleable?
The concept is that most metals, when they deform, do so much in the same way as silly putty. The opposite of malleable would be brittle. Brittle materials generally do not deform very much, they just shatter. A good example of a brittle material is stick chalk, such as would be used on a teacher's chalk board. Back to the malleable metals... If you had super-strong robotic hands, you would be able to mush and smear metals in your hands in a manner similar to silly putty - but that's the catch: you have to be super strong. It's important to note that not all metals are malleable. As a matter of fact, the physical characteristics of metals change with temperature. There is usually a temperature in which metals turn into a liquid, called the melting point, and there is also a temperature in which metals go from "malleable" (also known as the "ductile" state) to a brittle state. This temperature, which is usually very cold, is called the ductile-to-brittle transition temperature. Just like when ice cream is stiff when it is really, really cold, and ice cream gets mushy when it warms up, so does metal. Sometimes, the ductile-to-brittle transition temperature can cause problems. The famous sinking of the Titanic was supposedly due to the metal hull breaking against an iceberg instead of stretching, or plasticly deforming (that's what us engineers call malleable or ductile deformation). The water was sooooo cold around the Titanic that the metal of the hull became brittle.
What metals are not ductile?
They are GALLIUM and CAESIUM that can even melt if we keep them on our palm.
