Chapter 6.5

Chapter 6.5 - Elastic Recovery During Plastic Deformation...

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21 MSE 2090: Introduction to Materials Science Chapter 6, Mechanical Properties Elastic Recovery During Plastic Deformation If a material is deformed plastically and the stress is then released, the material ends up with a permanent strain. If the stress is reapplied, the material again responds elastically at the beginning up to a new yield point that is higher than the original yield point . The amount of elastic strain that it will take before reaching the yield point is called elastic strain recovery .
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22 MSE 2090: Introduction to Materials Science Chapter 6, Mechanical Properties Hardness (I) Hardness is a measure of the material’s resistance to localized plastic deformation (e.g. dent or scratch) A qualitative Moh’s scale, determined by the ability of a material to scratch another material: from 1 (softest = talc) to 10 (hardest = diamond). Different types of quantitative hardness test has been designed (Rockwell, Brinell, Vickers, etc.). Usually a small indenter (sphere,
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This note was uploaded on 02/14/2012 for the course MSE 2090 taught by Professor Leoindzhiglei during the Fall '10 term at UVA.

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Chapter 6.5 - Elastic Recovery During Plastic Deformation...

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