Skałoń Mateusz, Buzolin Ricardo, Kazior Jan, Sommitsch Christof, Hebda Marek
IMAT Institute of Materials Science, Joining and Forming, Graz University of Technology, Kopernikusgasse 24/1, 8010 Graz, Austria.
Institute of Materials Engineering, Cracow University of Technology, Cracow, 24 Warszawska ave, 31-155 Kraków, Poland.
Materials (Basel). 2019 Jun 3;12(11):1798. doi: 10.3390/ma12111798.
The following paper describes a new and effective method to obtain high-density sinters with simultaneously decreased distortions, produced by one press and sinter operation. This effect was achieved through the induced disappearance of the eutectic liquid phase. The study was carried out on AISI 316L stainless steel powder that was mixed with elemental boron and silicon nitride. Boron was used as a sintering process activator. The scientific novelty of this publication consists of the use of a silicon nitride as a solid-state nitrogen carrier that was intended to change the borides' morphology by binding boron. Based on the thermodynamic calculations, 20 blends of various compositions were tested for physical properties, porosity, microstructure, and mechanical properties. Moreover, phase compositions for selected samples were analyzed. It was shown that the addition of silicon nitride as a nitrogen carrier decreases the boron-based eutectic phase volume and both increases the mechanical properties and decreases after-sintering distortions. An explanation of the observed phenomena was also proposed.
以下论文描述了一种新的有效方法，可通过一次压制和烧结操作获得同时减少变形的高密度烧结体。这种效果是通过共晶液相的诱导消失实现的。该研究是在与元素硼和氮化硅混合的AISI 316L不锈钢粉末上进行的。硼用作烧结过程活化剂。本出版物的科学新颖之处在于使用氮化硅作为固态氮载体，旨在通过结合硼来改变硼化物的形态。基于热力学计算，对20种不同成分的混合物进行了物理性能、孔隙率、微观结构和力学性能测试。此外，还对选定样品的相组成进行了分析。结果表明，添加氮化硅作为氮载体会减少硼基共晶相体积，同时提高力学性能并减少烧结后变形。还对观察到的现象提出了解释。
