We develop an integrated resource-saving technology of manufacturing of semifinished products from γ -TiAl intermetallic alloys intended for aviation engineering and, in particular, for compressor blades. We describe the structure of an absolutely new, as compared with the existing procedures, technology of manufacturing of semifinished products from alloys based on titanium aluminide characterized by low prime cost and improved mechanical properties. For this purpose, we apply and combine the methods of self-propagating high-temperature synthesis (SHS) and severe plastic deformation (SPD) of source blanks. It is shown that the developed compositions of SHS mixtures and the technological conditions of the SHS-process make it possible to create γ -TiAl intermetallic alloys whose chemical and phase compositions are not inferior to the level of the best foreign analogs for a much lower relative prime cost of production. In the next stage of the technological process, the blanks are subjected to complex SPD, which makes it possible to remove the main disadvantages typical of SHS procedure, namely, the structural heterogeneity, residual porosity, and low plasticity. This is explained by the main effects of the SPD procedure (mass transfer and mixing of the material), which lead to the homogenization of the alloy, grinding of grains, and the formation of submicrocrystalline structure of the material.

中文翻译：

---

航空工程用γ-TiAl金属间合金半成品制造节约资源化技术

我们开发了一种综合资源节约技术，用于制造用于航空工程，特别是压缩机叶片的 γ-TiAl 金属间合金半成品。与现有程序相比，我们描述了一种全新的结构，由基于铝化钛的合金制造半成品的技术具有较低的主要成本和改进的机械性能。为此，我们应用并结合了自蔓延高温合成 (SHS) 和源坯严重塑性变形 (SPD) 的方法。结果表明，开发的 SHS 混合物的组成和 SHS 工艺的技术条件使得制造 γ-TiAl 金属间合金成为可能，其化学和相组成不低于国外最好的类似物的水平，而且相对较低。生产的主要成本。在下一阶段的工艺过程中，毛坯经过复杂的 SPD 处理，从而可以消除 SHS 程序的主要缺点，即结构不均匀、残余孔隙率和可塑性低。这是由 SPD 程序（材料的传质和混合）的主要影响来解释的，它导致合金的均质化、晶粒的研磨以及材料亚微晶结构的形成。