Effect of the Ti6Al4V Alloy Track Trajectories on Mechanical Properties in Direct Metal Deposition
Effect of the Ti6Al4V Alloy Track Trajectories on Mechanical Properties in Direct Metal Deposition
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DOI：
10.3390/machines8040079
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发表时间：
2020-12-01
期刊：
影响因子：
2.6
通讯作者：
Radionova, Liudmila
中科院分区：
文献类型：
--
作者：
Erdakov, Ivan;Glebov, Lev;Radionova, Liudmila
TiAl 6V 4合金广泛应用于选择性激光熔化和直接激光熔化。反过来，致力于轨道堆叠方案如何影响机械性能值的问题的工作是不够的。本文首次研究了Ti6 Al 4V合金激光沉积过程中轨迹变化对组织和力学性能的影响。研究了在激光直接合成中，铺轨技术和铺轨技术对合成结果的影响。所有研究的样品具有典型的硬化两相条件钛的显微结构。这里，它表明，铺设轨道的方法和方向的负载应用在压缩测试期间相对于轨道的位置导致的变化，在极限强度的Ti-6Al-4V合金从1794到1910 MPa。通过直接激光合金化获得的Ti-6Al-4V合金的塑性可以根据铺设轨道的方向和压缩测试的方向从21.3%变化到33.0%。合金的硬度在409至511 HV的范围内变化，并取决于铺设轨道的方法和硬度测量的方向。
The TiAl6V4 alloy is widely used in selective laser melting and direct laser melting. In turn, works devoted to the issue of how the track stacking scheme affects the value of mechanical properties is not enough. The influence of the Ti6Al4V alloy track trajectories on the microstructure and mechanical properties during direct laser deposition is studied in this article for the first time. The results were obtained on the influence of > and > technique of laying tracks in direct laser synthesis. All studied samples have a microstructure typical of the hardened two-phase condition titanium. Here, it is shown that the method of laying tracks and the direction of load application during compression testing relative to the location of the tracks leads to a change in the ultimate strength of the Ti-6Al-4V alloy from 1794 to 1910 MPa. The plasticity of the Ti-6Al-4V alloy obtained by direct laser alloying can vary from 21.3 to 33.0% depending on the direction of laying the tracks and the direction of the compression test. The hardness of alloys varies in the range from 409 to 511 HV and depends on the method of laying the tracks and the direction of hardness measurements.