【摘要】 本文针对某厂汽车发动机奥贝球铁齿轮材料，研究了等温淬火工艺对奥贝球铁组织和性能的影响。研究结果表明：经８８０℃奥氏体化＋３２０℃等温淬火处理，可获得上贝氏体／下贝氏体的混合组织。该组织具有优良的综合机械性能，满足了汽车发动机齿轮的技术要求更多还原

【Abstract】 In this paper.the effect of austempering process on the microstructure nd properties of ADI has been studied.The results show that the uppet bainitic /lower bainitic mixture matrix can be obtained under the foulwing condition:880℃Austeniting+320℃ Austempering.The mixture matrix has optimum integial mechanical propertise and fully meet the technological requirement of ADI gears of the automobire engine.更多还原