等淬工艺参数对等淬球铁组织与性能的影响  

Influence of Process Parameters of Isothermal-Quenching on Structure and Properties of Isothermal-Quenched Nodular Iron

作　　者：戴秋莲[1] 杨佳荣[2] 

机构地区：[1]华侨大学,福建泉州362011 [2]浙江大学,杭州310027

出　　处：《现代铸铁》2000年第1期29-32,共4页Modern Cast Iron

摘　　要：研究了等淬工艺参数对等淬球铁显微组织与力学性能的影响。结果表明：随着等温温度的升高，贝氏体的形态由针状下贝氏作→羽毛状上贝氏体→麦穗状→片状；温度升高，等淬球铁的组织和性能对等温时间的敏感性增大，“过程窗口”变小，不易得到理想的奥贝组织。In this paper, the influence of austempering heat treatment parameters on the microstructure and properties of ADI was studied. The results showed that with the increase of austempering temperature, the bainite morpholoy changes from needled lower bainite to feathered upper bainite then to ear of wheat like then flakiness. The microstructure and properties of ADI were more sensitive to austempering time at higher temperature. Thus the processing window is smaller and optimum microstructure cannot be obtained.

关 键 词：贝氏体形貌 过程窗口 球墨铸铁 等温淬火 

分 类 号：TG143.5[一般工业技术—材料科学与工程]