摘要
研究了回火处理对非合金奥贝球铁（含Ｍｎ约０．８％）组织和性能的影响。研究结果表明，等温淬火后进行回火处理（３００℃～３５０℃×４ｈ），可消除Ｍｎ的不利影响，从而使非合金奥贝球铁的组织和性能得以明显改善。
The influence of tempering treatment on the microstructures and dynamical properties of NADI containing up to 0.8wt% Mn is studied. The results show that the detrimental effects of Mn can be eliminated through conducting tempering treatment (300 ℃￣350 ℃×4 h) after austempering, so that the microstructures and dynamical properties of NADI are improved.
基金
湖北省科委科技攻关资助项目
关键词
非合金奥贝球铁
回火处理
显微组织
力学性能
nonalloy austempered ductile iron
tempering treatment
microstructure
dynamical property
