| 摘要 |
A method of making a low temperature bainite steel alloy gear includes forming a toothed gear having preferably preselected weight percentages of carbon, manganese, silicon, molybdenum, boron and the balance substantially iron, heating the gear to assure a substantially complete austenite morphology, quenching the gear toward a preselected temperature and avoiding transformation, and then holding the gear at the preselected temperature less than about two hours and transforming the austenite directly to substantially complete lower temperature bainite. Energy is saved by the short holding time and the usual further processing of the gear is avoided.
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