(physics, chemistry) Describing a diffusionlesstransition of one crystalstructure to another generated by coordinated atomic, ionic or molecular displacements over small distances (first studied in the mineral)
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These include the austenitic or gamma non-magnetic manganese steel, already patented b y Robert Hadfield in 1883, the first important known substance which combined great malleableness with great hardness, and the martensitic or beta " high speed tool steel " of White and Taylor, which retains its hardness and cutting power even at a red heat.
Is pearlitic, to those in which it is used in the hardened or martensitic state, we find that the carbon-content is governed by like considerations.