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首页> 外文期刊>Journal of Achievements in Materials and Manufacturing Engineering >Impact of rotary swaging and age hardening on mechanical properties of EN AW 2024
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Impact of rotary swaging and age hardening on mechanical properties of EN AW 2024

机译：旋锻和时效硬化对EN AW 2024力学性能的影响

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Purpose: Invention of severe plastic deformation methods led to increased interest in ultra-fine grained materials. The hardenable aluminium alloys were extensively studied in the last decade. It was revealed that combination of severe plastic deformation and age hardening can significantly improve the material properties of these alloys. In this article we performed such progressive thermo-mechanical treatment and following mechanical testing and metallographic analysis. The aim was to evaluate the influence of this treatment on mechanical properties, mostly the effect of various age hardening temperatures and time. Aluminium alloy EN AW 2024 was chosen for the experimental procedures. Impact of processing parameters on mechanical properties was determined by tensile testing. Metallographic analysis was used for evaluation of the straining influence on grain morphology. In the conclusion we denoted significant strain hardening effect, present shear bands and change in aging kinetics. Design/methodology/approach: The experimental material was processed by progressive thermo-mechanical treatment. The evaluation was performed by simple tensile testing and light microscopy. The first conclusions were derived from determined mechanical properties and based on similarities in available publications with related topic. Findings: The research results roughly confirm the recovery-precipitation complementary effect, observed in other hardenable aluminium alloys or the same hardenable alloy deformed by other SPD technique. The impact of both parts of processing - deformation and age hardening on mechanical properties was evaluated. Research limitations/implications: Future detailed investigation of secondary phase particles and dislocation-precipitate interaction should be performed. This investigation was not performed as it requires transmission electron microscopy. Originality/value: The paper contains first impression on promising SPD technique. As the technique appeared only recently, very few articles were published, considering few light alloys. The paper can help to set parameters for other researchers in this field and promote commercialization of this progressive thermo-mechanical processing
机译：目的：发明了严重的塑性变形方法，从而引起了人们对超细颗粒材料的兴趣。在过去的十年中，对可硬化铝合金进行了广泛的研究。结果表明，严重的塑性变形和时效硬化可以显着改善这些合金的材料性能。在本文中，我们进行了这种渐进式热机械处理，并进行了机械测试和金相分析。目的是评估该处理对机械性能的影响，主要是各种时效温度和时间的影响。实验程序选择了铝合金EN AW 2024。通过拉伸试验确定加工参数对机械性能的影响。金相分析被用于评估应变对晶粒形态的影响。在结论中，我们指出了显着的应变硬化效果，当前的剪切带和时效动力学的变化。设计/方法/方法：实验材料通过渐进式热机械处理进行处理。通过简单的拉伸试验和光学显微镜进行评估。最初的结论来自确定的机械性能，并基于与相关主题相关的可用出版物中的相似性。发现：研究结果大致证实了在其他可硬化铝合金或通过其他SPD技术变形的相同可硬化合金中观察到的恢复-沉淀补充效应。评价了加工的两个部分-变形和时效硬化对机械性能的影响。研究的局限性/含意：应该对未来的次生相颗粒和位错-沉淀物的相互作用进行详细的研究。由于需要透射电子显微镜，因此未进行此研究。原创性/价值：本文包含对有前途的SPD技术的第一印象。由于这项技术只是在最近才出现，因此很少发表有关轻合金的文章。本文可以帮助为该领域的其他研究人员设置参数，并促进这种渐进式热机械加工的商业化

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