摘要
对Fe-Cr-C-Mo系堆焊层及其横断面组织、硬度和元素分布等进行了分析和研究。结果表明,Fe-Cr-C-Mo系堆焊层具有硬度高且韧性好的奥氏体基体以及耐磨相马氏体,对其中的碳化物起到保护和支撑的作用;弥散分布的(Cr2.5Fe4.3Mo0.1)C3和(Nb,Ti)C碳化物,硬度高,耐磨性好,起到保护堆焊层基体的作用;堆焊层抗裂性好,与基体结合性好,不易剥落,保护了基材,使得部件整体的耐磨性能提高。
In the present investigation, the hardness, elements distribution and microstructure of the cross-section surface of the Fe-Cr-C-Mo hardfacing alloy layer were studied. The results show that, Fe-Cr-C-Mo hardfacing alloy layer consists of high hardness and good toughness, because of austenitic matrix and wear-resistant martensitic matrix, which could protect and hold-up the carbide. The hardfacing alloy layer matrix is protected by the dispersed distribution of （Cr2.5Fe4.3Mo0.1C3 and （Nb,Ti）C carbide which have high hardness, good wear-resistance. The improvement of the wear-resistance in the whole component due to good crack resistance and good combination of hardfaeing alloy and matrix, so the hardfacing alloy layer cannot exfoliate easily and also protects the matrix, improves the wear-resistance.
出处
《热加工工艺》
CSCD
北大核心
2009年第4期63-65,共3页
Hot Working Technology
