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Abstract:
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The aim of this study is to demonstrate the validity or invalidity of the equation of
diffusion of Hollomon and Jaffe or Larson Miller. To do this, we will use 4 steels with
different carbon contents and varying the temparature and the time of sintering, we will
proceed to the final conclusions. These will come defined by 4 ways:
1 .- Graphs hardness versus distance (from outside to inside of material to study)
2 .- The depth of decarburization
3 .- The grain size of each material
4 .- The carbon content
Once analyzed and studied, all the experimental results conclude that Hollomon and
Jaffe is valid for the following parameters: carbon content, the grain size and the depth
of decarburization. However this equation is a very rough diffusion law which is not
valid for the hardness. |
