During slow cooling of an iron-carbon alloy, pearlite forms by a eutectoid reaction as austenite cools below ( the eutectoid temperature ).
32.
Generally speaking, cooling swiftly will leave iron carbide finely dispersed and produce a fine grained pearlite and cooling slowly will give a coarser pearlite.
33.
Generally speaking, cooling swiftly will leave iron carbide finely dispersed and produce a fine grained pearlite and cooling slowly will give a coarser pearlite.
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As a result of the transformation, the microconstituents, Pearlite and Bainite, form; Pearlite forms at higher temperatures and bainite at lower.
35.
As a result of the transformation, the microconstituents, Pearlite and Bainite, form; Pearlite forms at higher temperatures and bainite at lower.
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From my own experience, I know this doesn't increase the toughness of the blade anymore than the soft pearlite jacket already does.
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However, the transformation from austenite to pearlite is a time-dependent reconstructive reaction which requires the large scale movement of the iron and carbon atoms.
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Both of these mechanisms strengthen the surface of the metal, the former by forming pearlite or martensite, and the latter via the formation of carbides.
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From these observations he drew conclusions regarding the structure of pearlite and ferrite, and he was also able to watch the recrystallization of steel during cold working.
40.
Nickel is one of the most common alloying elements because it refines the pearlite and graphite structure, improves toughness, and evens out hardness differences between section thicknesses.
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