Age-hardening of surface aged hardening alloy

来源期刊：中国有色金属学报(英文版)2000年第6期

论文作者：李忠厚 刘小萍 赵金香 徐重

文章页码：788 - 790

Key words：high carbon steel; plasma decarburizing; age-hardening; surface aged hardening alloy

Abstract: Steel T8 treated by plasma surface decarburizing was alloyed by the Xu-Tec process with Co,W and Mo. An alloyed layer of Fe-Co-W-Mo with low carbon content was formed on the surface of the high carbon steel, thus an advanced gradient composite was produced. The specimens then were treated by the solution and aging treatments. The characteristics of age-hardening of the alloying layer were studied. The hardness of the surface layer increases from HV200 to HV1 200 after the solution treatment at 1190℃and aging at 400℃for 30min. The results show that the surface aged high speed steel possesses not only high surface hardness, but also enough bulk strength.