Composition Design and Fatigue Curves of Hardfacing Materials for Cold Roll
Composition Design and Fatigue Curves of Hardfacing Materials for Cold Roll
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DOI：
10.1155/2016/8487976
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发表时间：
2016-02
影响因子：
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通讯作者：
C. L. Chen;Cuixin Chen;Z. Guo;J. Ding;X. Han;Q. Jiang
中科院分区：
文献类型：
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作者：
C. L. Chen;Cuixin Chen;Z. Guo;J. Ding;X. Han;Q. Jiang
为了提高冷轧辊的疲劳寿命，通过正交试验设计了一系列堆焊合金，考虑了碳、铬、铌之间的交互作用。采用钨极惰性气体保护焊(TIG)堆焊堆焊层。分析了合金含量对组织和碳化物的影响，以及在不同加载频率和不同温度下的疲劳行为。结果表明，0.5%C、4.0%Cr和2.0%Nb的合适组合可获得54.7HRC的高硬度，可形成细小的板条马氏体和弥散分布的碳化物。新设计的堆焊材料在低加载频率和400°C以下具有与母材相似的曲线。
In order to improve the fatigue life of cold rolls, a series of hardfacing alloys were designed by orthogonal experiments considering the interaction between carbon, chromium, and niobium. Hardfacing layers were produced by Tungsten Inert Gas (TIG) arc welding. The effects of alloy content on microstructure and carbides and fatigue behavior at different load frequency and different temperature were analyzed. The results show that suitable combination of 0.5% C, 4.0% Cr, and 2.0% Nb can obtain a high hardness of 54.7 HRC for the formation of fine lath martensite and carbides with dispersed distribution. The new designed hardfacing materials have similar curves with parent material in low load frequency and below 400°C.