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首页> 外文期刊>Applied Surface Science >Effect Of Carbonitride Precipitates On The Abrasive Wear Behaviour Of Hardfacing Alloy
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Effect Of Carbonitride Precipitates On The Abrasive Wear Behaviour Of Hardfacing Alloy

机译：碳氮化物沉淀对堆焊合金耐磨性能的影响

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摘要

Hardfacing alloy of martensitic stainless steel expect higher abradability to be achieved through the addition of nitrogen being provided by the fine scale precipitation of complex carbonitride particles. Niobium and titanium as the most effective carbonitride alloying elements were added in the Fe-Crl3-Mn-N hardfacing alloy to get carbonitride precipitates. Carbonitride was systematically studied by optical microscopy, scanning electronic microscopy and energy spectrum analysis. Abrasive wear resistance of hardfacing alloy in as-welded and heat-treated conditions was tested by using the belt abrasion test apparatus where the samples slide against the abrasive belt. It is found that carbonitride particles in the hardfacing alloy are complex of Cr, Ti and Nb distributing on the grain boundary or matrix of the hardfacing alloy with different number and size in as-welded and heat-treated conditions. A large number of carbonitrides can be precipitated with very fine size (nanoscale) after heat treatment. As a result, the homogeneous distribution of very fine carbonitride particles can significantly improve the grain-abrasion wear-resisting property of the hardfacing alloy, and the mass loss is plastic deformation with minimum depth of grooving by abrasive particles and fine delamination.
机译：马氏体不锈钢的表面堆焊合金期望通过添加氮来实现更高的耐磨性，其中氮是由复杂的碳氮化物颗粒的精细沉淀而提供的。铌和钛是最有效的碳氮化物合金元素，已添加到Fe-Crl3-Mn-N堆焊合金中以获得碳氮化物沉淀。通过光学显微镜，扫描电子显微镜和能谱分析系统地研究了碳氮化物。通过使用皮带磨耗测试设备测试了在焊接和热处理条件下表面硬化合金的耐磨性，其中样品在砂带上滑动。发现在堆焊和热处理条件下，堆焊合金中的碳氮化物颗粒是Cr，Ti和Nb的络合物，分布在堆焊合金的晶界或基体上，具有不同数量和尺寸。热处理后，大量的碳氮化物会以非常细的尺寸（纳米级）沉淀出来。结果，非常细的碳氮化物颗粒的均匀分布可以显着改善表面硬化合金的抗磨粒磨损性能，并且质量损失是塑性变形，其中磨蚀颗粒造成的切槽深度最小，并且发生细分层。

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