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首页> 外文期刊>Journal of engineering materials and technology >Influence of Texture Evolution on Mechanical and Damping Properties of SiC/Li_2ZrO_3/AI Composite Through Friction Stir Processing
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Influence of Texture Evolution on Mechanical and Damping Properties of SiC/Li_2ZrO_3/AI Composite Through Friction Stir Processing

机译：摩擦搅拌对织构演变对SiC / Li_2ZrO_3 / AI复合材料力学性能和阻尼性能的影响

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摘要

In this study, parent aluminum (Al), silicon carbide (SiC) reinforced Al, zirconia (ZrO_2) coated SiC reinforced Al, and lithium zirconate spinel (Li_2ZrO_3, LZO) encapsulated SiC incorporated Al metal matrix composites were processed via friction stir processing (FSP) technique to observe the influence of grain refinement on mechanical and damping properties. Electron backscattered diffraction (EBSD) analysis were conducted for detailed and deep understanding of possible mechanism and microstructure at longitudinal cross sections of the samples. Further, the room temperature mechanical properties and thermal cyclic (-100 to 400 ℃) damping performance of the friction stir processed composites were studied. The results obtained in this investigation show that storage modulus of pristine Al, SiC reinforced Al, ZrO_2 coated SiC reinforced Al, and LZO coated SiC reinforced Al were improved by a factor of 1.09, 1.17, 1.09, and 1.38, respectively, after FSP. Additionally, the ultimate tensile strength (UTS) and hardness of the friction stir processed SiC/Li_2ZrO_3/Al composite were improved by a factor of 1.08 and 1.11, respectively, after FSP was compared with an unprocessed composite.
机译：在这项研究中，通过摩擦搅拌工艺处理了母体铝（Al），碳化硅（SiC）增强的Al，氧化锆（ZrO_2）涂层的SiC增强的Al和锆酸锂尖晶石（Li_2ZrO_3，LZO）封装的SiC结合的Al金属基复合材料（ FSP）技术观察晶粒细化对机械和阻尼性能的影响。进行了电子背散射衍射（EBSD）分析，以详细，深入地了解样品纵向截面处的可能机理和微观结构。此外，还研究了搅拌摩擦复合材料的室温力学性能和热循环（-100至400℃）阻尼性能。这项研究获得的结果表明，在FSP之后，原始Al，SiC增强的Al，ZrO_2涂层的SiC增强的Al和LZO涂层的SiC增强的Al的储能模量分别提高了1.09、1.17、1.09和1.38。此外，将FSP与未处理的复合材料进行比较后，经摩擦搅拌处理的SiC / Li_2ZrO_3 / Al复合材料的极限拉伸强度（UTS）和硬度分别提高了1.08和1.11倍。

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