Microtreatment of iron-based alloy, apparatus and method therefor, and articles resulting therefrom
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United States of America Patent
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Jan 8, 2019
Grant Date -
Jun 3, 2010
app pub date -
Oct 3, 2007
filing date -
Oct 3, 2006
priority date (Note) -
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Abstract
Iron-based alloys and articles in strips, sheets, workpieces and the like are converted into high strength steel with a minimum of cost, time and effort, including producing dual phase materials. This is achievable by extremely rapid micro-treating of low, medium, and high carbon iron-based alloys and articles by rapid heating and rapid cooling at least a portion of the alloy/article. This heating step involves nearly immediately heating the iron-based alloy to a selected temperature above its austenite conversion temperature. Then, the alloy is immediately quenched, also at an extremely fast rate, on at least a portion of the iron-based alloy in a quenching unit adjacent the heating unit. This procedure forms high strength alloy in a desired area, depending upon where the treatment was performed.
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