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首页> 外文期刊>Powder Metallurgy >Study of high temperature wetting and infiltration for optimising liquid phase sintering in low alloy steels
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Study of high temperature wetting and infiltration for optimising liquid phase sintering in low alloy steels

机译：高温润湿和渗透优化低合金钢液相烧结的研究

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Liquid phase sintering is commonly used in powder metallurgy to improve physical properties through densification enhancement. With the aim of combining the advantages of liquid phase sintering and the use of promising alloying elements such as Mn and Si, liquid promoters with complex compositions were designed to provide a low melting point to form a liquid phase below the common sintering temperatures. The properties of these liquid phases were characterised in terms of contact angle, spreading evolution and infiltration. Using a Kruss drop shape analysis system, both wetting angle experiments and infiltration experiments were performed by changing the substrate characteristics from sintered to green iron specimens respectively. The discussion is based on the different features found for these liquids compared with copper, which is a well known liquid phase former used for improving the properties of low alloy steels. Simulations of the thermodynamic and kinetic processes taking place were performed by combining ThermoCalc and DICTRA software analysis.
机译：液相烧结通常用于粉末冶金中以通过致密化增强来改善物理性能。为了结合液相烧结的优点和使用有前景的合金元素（如Mn和Si），设计了具有复杂成分的液体促进剂，以提供低熔点，在低于常规烧结温度的条件下形成液相。这些液相的特性通过接触角，扩展扩散和渗透来表征。使用Kruss液滴形状分析系统，分别通过将基底特性从烧结试样转变为生铁试样，进行了润湿角实验和浸润实验。讨论的基础是与铜相比，这些液体具有不同的特性，铜是众所周知的用于改善低合金钢性能的液相形成剂。通过结合ThermoCalc和DICTRA软件分析进行了热力学和动力学过程的模拟。

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