The possibility of producing cast alloyed nitrided steel (up to 1.3 wt % N) by SHS metallurgy is shown. The initial mixture for making alloy cast steel includes iron, chromium, manganese, nickel, molybdenum, vanadium, silicon, and aluminum oxides. Chromium nitride is used as the main nitrogen source. Initial mixtures are shown to be capable of burning over a wide range of reagent ratios, and the combustion temperature exceeds the melting temperature of the condensed combustion products (steel, reducing-metal oxide), which makes it possible to perform their gravitational separation and to make steel in an as-cast form. Experimental studies are carried out in a reactor under nitrogen pressure and in a centrifugal installation under the combined action of overload and pressure to exclude the spread of a mixture during combustion. When the pressure in the reactor is increased from 0.1 to 5.5 MPa, the nitrogen content in steel alloyed with chromium, manganese, nickel, molybdenum, vanadium and silicon is found to increase from 0.4 to 1.3 wt %. Under overload (150 g ) and an increase in the pressure from 0.1 to 1 MPa, the nitrogen content increases from 0.4 to 0.55 wt %. According to X-ray diffraction and electron-probe microanalysis data, the base of the steel has the γ-Fe lattice and is a solution of alloying elements in iron. The shift of the diffraction peaks and their broadening indicate the dissolution of alloying elements in iron. α-Fe precipitates and point inclusions of vanadium, chromium, and impurity-aluminum nitrides are also detected.

中文翻译：

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气体压力下SHS在合金钢成分中引入氮

显示了通过SHS冶金生产铸造合金化氮化钢（N含量高达1.3 wt％）的可能性。用于制造合金铸钢的初始混合物包括铁，铬，锰，镍，钼，钒，硅和氧化铝。氮化铬用作主要的氮源。最初的混合物显示出能够在很宽的试剂比范围内燃烧，并且燃烧温度超过了冷凝的燃烧产物（钢，还原金属氧化物）的熔化温度，这使其能够进行重力分离并达到以铸态制造钢。实验研究是在氮气压力下的反应堆中以及在过载和压力共同作用下的离心装置中进行的，以排除燃烧过程中混合物的扩散。当反应器中的压力从0.1MPa增加到5.5MPa时，发现与铬，锰，镍，钼，钒和硅合金化的钢中的氮含量从0.4wt％增加到1.3wt％。过载时（150 g ）和压力从0.1MPa增加到1MPa，氮含量从0.4wt。％增加到0.55wt％。根据X射线衍射和电子探针显微分析数据，钢的基体具有γ-Fe晶格，是铁中合金元素的溶液。衍射峰的移动及其变宽表明合金元素在铁中的溶解。还检测到了钒铁，铬和杂质铝氮化物的α-Fe沉淀和点状夹杂物。