奥—贝蠕铁是继奥—贝球铁之后发展起来的新型工程材料之一，也是世界上正在开发的材料。本文系统地提供了奥—贝蠕铁的制取工艺，奥—贝蠕铁的组织特征及其在常温及随温度提高力学性能变化的规律。研究表明，以稀土硅铁为蠕化剂，所制取的蠕化率大于９０％、基体以铁素体为主的蠕墨铸铁，经等温淬火后，可稳定地获得奥氏体—贝氏体基体（以下简称奥—贝蠕铁），它有较好的综合性能，在常温下σｂ＝８２０～９３７．５ＭＰａ，δ＝０．４０％～０．７８％；在６００℃时，σｂ＝１５８～１８７ＭＰａ，δ＝４．００％～７．８４％，仍超过ＨＴ１５０的常温性能。当低于３００℃时组织和性能稳定性较好，是适宜的工作温度范围 Austrian - Pui Bei iron is Austrian - after the dumbbell developed a new type of engineering materials, but also the world is developing materials. In this paper, we systematically provide the preparation process of austenite-bentonite, the microstructure and properties of austenite-bentonite and its regularity at room temperature and with the increase of mechanical properties. The results show that with the rare earth ferrosilicon as the creeping agent, the prepared vermiculite is more than 90%, the ferrite-based compacted vermicular graphite iron can be obtained austenite-bainite It has better comprehensive properties, such as σb = 820 ~ 937.5MPa and δ = 0.40% ~ 0.78% at room temperature. At 600 ℃, σb = 158 ~ 187MPa, δ = 4.00% ~ 7.84%, still exceeding the HT150 room temperature performance. When the temperature is below 300 ℃, the stability of the structure and performance is good, which is the suitable working temperature range