摘要
基体钢(65Nb)冷镦模具经超低温工艺处理后微观组织发生了变化,即从回火马氏体中析出碳化物微粒,残余奥氏体转变成马氏体并析出微细碳化物。这种组织变化可显著提高模具的耐磨性和冲击韧度。
The microstructure change of matrix steel (65Nb) cold heading die by cryogenic technological treatment is researched in this paper, i.e. the carbide micro granules are separated from tempering martensite, retained austenite changes to martensite and separates fine carbide. This tissue change may obviously improve the wear resistance of die and impact toughness, so the life of die will be prolonged greatly as well.
出处
《合肥学院学报（自然科学版）》
2004年第1期43-45,共3页
Journal of Hefei University :Natural Sciences
