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首页> 外文期刊>Journal of Materials Engineering and Performance >The Effect of Grain Refinement on Solid Particle Erosion of Grade 5 Ti Alloy
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The Effect of Grain Refinement on Solid Particle Erosion of Grade 5 Ti Alloy

机译：晶粒细化对5酮合金固体颗粒腐蚀的影响

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摘要

In this work, the results on solid particle erosion of an ultrafine-grained Grade 5 titanium alloy, which was produced using high-pressure torsion (HPT) technique, are presented. In order to assess influence of the HPT treatment on material’s behavior in erosive conditions, special experimental procedures were developed. The ultrafine-grained (UFG) alloy was tested alongside with a conventional coarse-grained (CG) Grade 5 titanium alloy in equal conditions. The experiments were conducted in a small-scale wind tunnel with corundum particles as an abrasive material. Both particle dimensions and particle velocities were varied in course of the experiments. Erosion resistance of the samples was evaluated in two ways—mass reduction measurements with subsequent gravimetric erosion rate calculations and investigation of samples’ surface roughness after erosion tests. The UFG titanium alloy demonstrated considerable improvement of static mechanical properties (ultimate tensile strength, microhardness), whereas its CG counterpart appeared to be slightly more resistant to solid particle erosion, which might indicate the drop of dynamic strength properties for the HPT-processed material.
机译：在这项工作中，提出了使用高压扭转（HPT）技术生产的超细粒粒5级钛合金的固体颗粒腐蚀的结果。为了评估HPT治疗对材料在腐蚀条件下的行为的影响下，开发了特殊的实验程序。在相同条件下与常规粗粒（CG）5级钛合金一起测试超细晶粒（UFG）合金。实验在小型风洞中，用刚玉颗粒作为磨料材料进行。在实验过程中，颗粒尺寸和颗粒速度都变化。用随后的重量腐蚀速率计算和样品表面粗糙度的两种途径降低测量评价样品的侵蚀抗性。 UFG钛合金表现出静态机械性能（极限拉伸强度，微硬度）的显着提高，而其CG对应物似乎易于耐固体颗粒腐蚀，这可能表明HPT加工材料的动态强度性能下降。

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