The Master-alloy (MA) alloy route to promote a liquid phase during sintering has great potential to reduce costs in low alloyed sintered steels, meanwhile enabling the introduction of innovative alloy systems with Cr, Mn and Si. However, in order to successfully modify the performance of steels, multi requirements must be met, including, for example, solubility with the base material, compatibility with the usual sintering atmospheres, homogeneous distribution of the powdered master alloy in the material and the control of secondary porosity. Efforts have been made to properly design the composition of MA, to identify the reducing agents and to understand how they affect the wetting and liquid spreading all over the sintered part. This work reviews these key aspects for the efficient development of steels and explores the possibility to achieve a composition that can act as liquid former or as sinter braze adapting its use to the component requirement.

中文翻译：

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低合金钢的新机遇-液相烧结用中间合金

用于在烧结过程中促进液相的母合金（MA）合金路线具有降低低合金烧结钢成本的巨大潜力，同时还可以引入具有Cr，Mn和Si的创新合金体系。然而，为了成功地改变钢的性能，必须满足多种要求，包括例如与基体材料的溶解度，与常规烧结气氛的相容性，粉末状中间合金在材料中的均匀分布以及对合金的控制。次生孔隙度。已经做出努力来适当地设计MA的组成，以识别还原剂并了解它们如何影响整个烧结部件的润湿和液体散布。