| 摘要 |
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 eff ort, including producing dual phase materials. This is achievable by extreme ly rapid micro-treating of low, medium, and high carbon iron-based alloys an d articles by rapid heating and rapid cooling at least a portion of the allo y/article. This heating step involves nearly immediately heating the iron-ba sed alloy to a selected temperature above its austenite conversion temperatu re. 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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