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首页> 外文期刊>Journal of Materials Engineering and Performance >Optimization of the Mechanical Properties and Residual Stresses in 2024 Aluminum Alloy Through Heat Treatment
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Optimization of the Mechanical Properties and Residual Stresses in 2024 Aluminum Alloy Through Heat Treatment

机译：通过热处理优化2024铝合金的机械性能和残余应力

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摘要

Residual stresses induced during quenching of aluminum alloys cause dimensional instability and distortion. In this study, the effects of different concentrations of polyalkylene glycol (PAG) quenchants on residual stresses and mechanical properties of 2024 aluminum alloy were investigated. Surface residual stresses were measured by using hole-drilling strain-gauge method. Also, mechanical properties and microstructure of the heat-treated samples were analyzed using hardness measurements, tensile tests, and transmission electron microscopy. Results showed that quenching into a 15% polymeric solution and aging at 190 A degrees C for 12 h cause 50% reduction in residual stress as compared with quenching in water at 20 A degrees C and naturally aging. Moreover, tensile strength decreased by 104 MPa (similar to 20%) in compared with the T6 sample.
机译：在铝合金淬火期间诱导的残余应力导致尺寸不稳定性和变形。 在该研究中，研究了不同浓度的聚亚烷基二醇（PAG）猝灭剂对2024铝合金的残余应力和机械性能的影响。 通过使用空穴钻孔应变测量法测量表面残余应力。 此外，使用硬度测量，拉伸试验和透射电子显微镜分析热处理样品的机械性能和微观结构。 结果表明，与190℃的190℃下淬灭成15％的聚合物溶液和老化，导致残余应力降低50％，而在20℃下的水中淬火和天然老化。 此外，与T6样品相比，拉伸强度降低104MPa（类似于20％）。

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