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Surface Boriding and Titanization Stainless Steel by Integrated Processes
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques ( IF 0.5 ) Pub Date : 2021-04-20 , DOI: 10.1134/s1027451021010080
Yu. F. Ivanov , V. E. Gromov , D. A. Romanov , O. V. Ivanova , Yu. A. Rubannikova

Abstract

The phase and element composition, defect sub-structure in the surface layer of stainless high-chromium steel 12Cr18Ni10Ti (0.12% C, 1.8% Cr, 10% Ni, 1% Ti) alloyed in the electric explosion have been investigated in an X-ray analysis and with the help of optical, scanning and transmission electron microscopy in the diffraction mode. Titanium and boron have been selected as alloying elements. Once a steel surface modified via the electrical explosion alloying is irradiated by an intensive pulsed electron beam, a multi-phase sub-micro nano-crystalline surface layer (up to 60 μm) with no micro-pores and micro-craters is produced. The research has demonstrated two-element compounds only form in the modified layer of steel. The microhardness of a modified layer is related to a part of titanium borides in the surface of steel, being more than 18 times higher after the electrical explosion alloying than in as delivered state. As a result of the subsequent irradiation by an electron beam, a surface layer is formed in the steel alloyed via the electrical explosion; the microhardness and wear resistance of this layer are seven and nine times, respectively, higher than these parameters in as delivered state.



中文翻译:

集成工艺的表面渗硼和钛化不锈钢

摘要

在X射线下研究了在电爆炸中合金化的不锈钢高铬钢12Cr18Ni10Ti(0.12%C,1.8%Cr,10%Ni,1%Ti)的表层中的相和元素组成,缺陷子结构。射线分析,并在衍射模式下借助光学,扫描和透射电子显微镜进行分析。钛和硼已被选作合金元素。一旦通过强脉冲电子束辐照了通过电爆炸合金改性的钢表面,便会产生没有微孔和微缩孔的多相亚微纳米晶体表面层(最大60μm)。研究表明,只有在改性钢层中才能形成两种元素的化合物。改性层的显微硬度与钢表面的一部分硼化钛有关,在电爆炸合金化之后,比在交付状态下高出18倍以上。随后通过电子束辐照的结果是,在通过电爆炸而合金化的钢中形成了一个表面层。在交货状态下,该层的显微硬度和耐磨性分别是这些参数的7倍和9倍。

更新日期:2021-04-20
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