【作者】 孙玉福； 张民堂； 杜学山； 马江涛；

【机构】 郑州大学材料科学与工程学院； 河南欧迪艾铸造有限公司；

【摘要】 研究了等温淬火温度和等温淬火时间对其组织、力学性能、耐磨性能的影响规律,优化制定了高强度ADI的热处理工艺规范。结果表明:900℃×90min奥氏体化+250℃×120min等温淬火,ADI综合性能较好,基体组织为针状铁素体和残余奥氏体,抗拉强度为1710MPa,伸长率为2%,硬度(HBW)为471。更多还原

【Abstract】 In this paper the heat treatment specification of high strength ADI has been optimized by studying the effects of austempered temperature and austempered time on the microstructure, mechanical properties, wear resistance of the ADI. The results show that afte 900 ℃ × 90 min austenitized + 250 ℃ × 120 min austempered, ADI has good comprehensive performance, the matrix organization of acicular ferrite and retained austenite, tensile strength was 1710 MPa, elongation rate was 2%, the hardness was 471 HBW.更多还原