The technique for producing microlayered materials by sintering and rolling a package of alternating titanium and aluminum ribbons at 460 and 770°C is presented. The initial package thickness was 2.6 mm and the final thickness after hot rolling was 1.8 mm. Then the preform was rolled at room temperature to a thickness of 0.5 mm. The total strain at 20°C was e = ln1.8/0.5 = 1.3. Some ribbons 0.5 mm thick stratified in the middle and were tested by static and cyclic bending. X-ray diffraction found that the material that was heated and rolled at 770°C contained an hcp titanium phase and a TiAl 3 phase. Structural anisotropy in titanium layers was established. The proportional limit of the 0.5 mm thick material was 368 MPa. The elastic characteristics, transmission energy of vibrations, and fatigue strength of the microlayered Ti–TiAl 3 samples 0.25 mm thick cut along and across the rolling direction were determined. For this purpose, firstand second-mode resonant bending vibrations of cantilevered samples were excited and dependences of the maximum stresses in the samples on machine (electrodynamic shaker) power, W/W max , were found. The destructive fatigue stresses in the samples versus the number of load cycles were determined as well. Young’s modulus of the samples cut out along the rolling direction was 92 and for the samples cut out across the rolling direction was 100 GPa. The microlayered Ti–TiAl 3 material along the rolling direction is less perfect than that across the rolling direction since nondestructive stresses are 11% lower along the rolling direction because of greater energy dissipation in anisotropic crystallographic structure, the relative excitation power of vibrations being the same. The ultimate strength determined from 107 cycles (T roll = 460°C) was 303 MPa for the Ti–Al samples along the rolling direction and 299 MPa for the Ti–TiAl 3 samples along the rolling direction and 481 MPa for those across the rolling direction.

中文翻译：

---

微层 Ti-Al 材料在静态和循环载荷下的力学性能

介绍了通过在 460 和 770°C 下烧结和轧制一包交替的钛和铝带来生产微层材料的技术。初始卷装厚度为 2.6 毫米，热轧后最终厚度为 1.8 毫米。然后将预成型坯在室温下轧制成 0.5 毫米的厚度。20°C 下的总应变为 e = ln1.8/0.5 = 1.3。一些 0.5 毫米厚的带子在中间分层，并通过静态和循环弯曲进行测试。X射线衍射发现，在770℃下加热轧制的材料含有hcp钛相和TiAl 3 相。在钛层中建立了结构各向异性。0.5 mm 厚材料的比例极限为 368 MPa。微层 Ti-TiAl 3 样品的弹性特性、振动传递能和疲劳强度 0. 确定沿轧制方向和横贯轧制方向的 25 毫米厚切割。为此，悬臂样品的一阶和二阶共振弯曲振动被激发，并且发现了样品中最大应力对机器（电动振动器）功率 W/W max 的依赖性。还确定了样品中的破坏性疲劳应力与负载循环次数的关系。沿轧制方向切出的样品的杨氏模量为92，沿轧制方向切出的样品的杨氏模量为100GPa。沿轧制方向的微层 Ti-TiAl 3 材料不如沿轧制方向的微层材料完美，因为沿轧制方向的非破坏性应力低 11%，因为各向异性晶体结构中的能量耗散更大，振动的相对激振功率相同。从 107 次循环（T 辊 = 460°C）确定的极限强度对于 Ti-Al 样品沿轧制方向为 303 MPa，对于 Ti-TiAl 3 样品沿轧制方向为 299 MPa，对于横轧方向为 481 MPa方向。