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Glosssary of Corrosion Related Terms
To search the glossary simply click on the desired letter below to view a complete list of all the terms under that listing.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Evidence of plastic deformation in structural materials. Also called plastic flow or creep. See also flow.
The first stress in a material, usually less than the maximum attainable stress, at which an increase in strain occurs without an increase in stress. Only certain metals - those that exhibit a localized, heterogeneous type of transition from elastic deformation to plastic deformation - produce a yield point. If there is a decrease in stress after yielding, a distinction may be made between upper and lower yield points. The load at which a sudden drop in the flow curve occurs is called the upper yield point. The constant load shown on the flow curve is the lower yield point.
The stress at which a material exhibits a specified deviation from proportionality of stress and strain. An onset of 0.2% is used for many metals.
The stress level in a material at or above the yield strength but below the ultimate strength, i.e., a stress in the plastic range.