A Method for Determining the Volume Changes Occurring in Metals During Casting (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from A Method for Determining the Volume Changes Occurring in Metals During Casting

The shrinkage during solidification of an alloy with, a freezing range will include, therefore, all three types of shrinkage defined above; that is, liquid, solidification, and solid.

Shrinkage or contraction of the liquid is a definite physical property of a metal or alloy. This value, therefore, is fixed and constant for each metal or alloy. The shrinkage during solidification is essentially a constant for a pure metal, eutectic, or intermetallic compound. However, in alloys of the solid-solution type, the solid metal, which separates from the melt during freezing continually changes in com position and the Shrinkage during solidification is correspondingly complicated. During this selective crystallization stresses 'may be set up on account Of the different coefficients of expansion of metal of different composition. According to Davey all crystals are produced in a state of strain.

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