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：

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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。