A brittle material Is both strong and ductile Experiences little plastic deforma

Question

A brittle material Is both strong and ductile Experiences little plastic deformation until fracture Experiences extensive plastic deformation until fracture Absorbs a lot of energy prior to fracture With increasing temperature Strength, ductility and stiffness increase Strength, ductility and stiffness decrease Strength and stiffness decrease, ductility increases Strength and stiffness increase, ductility decreases If a metallic specimen experiences only elastic deformation during a tensile test, upon removing the load the length of the specimen will: Be the average of the original and deformed lengths Return immediately to the original length Return slowly to the original length Remain the deformed length

Explanation / Answer

>> A Brittle Material has poor ductility and thus experinces little plastic deformation until fracture

>> When temperature increases,

then molecules try to move rapidly or dislocation increases thus increasing the ductility

Due to the same reason, now body can experience a less load until fracture.

and, as rigidityof molecule is lost, thus stiffness decreases

Thus Strength , Stiffness Decreases while Ductility Increases

>> Under Elastic Deormation, upon releasing the load,

It will immediately return to the original length...

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