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Ti Al合金具有耐高温,抗蠕变性好,抗氧化性好等优越性能,作为一种高温结构材料在航空航天及汽车制造领域具有巨大的发展潜力,而其应用被限制由于较低的室温塑性。为了显著的改善其性能,关于Ti Al合金快速凝固技术的研究相继开展。在计算材料学的不断完善和计算技术稳步提高的背景下,高速发展的数值模拟技术已经深入到金属快速凝固成形过程各方各面,冷却速度对金属微观组织变化的研究已经在Ti Al合金快速凝固过程数值模拟方面得以开展。本文对Ti Al合金快速凝固过程数值模拟及其相关领域的研究成果进行概括,分析了发展现状和前景及目前存在问题。
Ti Al alloy has excellent properties such as high temperature resistance, good creep resistance and good oxidation resistance. As a high temperature structural material, it has great potential for development in the field of aerospace and automobile manufacturing. Its application is limited due to lower room temperature Plasticity. In order to significantly improve its performance, the rapid development of Ti Al alloy solidification technology has been carried out. With the continuous improvement of computational materials science and the steady increase of computing technology, the rapid development of numerical simulation technology has penetrated into all aspects of metal rapid solidification process. The research on the variation of cooling rate on metal microstructure has been carried out in TiAl alloy rapid Solidification process numerical simulation can be carried out. In this paper, the numerical simulation of rapid solidification process of TiAl alloy and its related research results are summarized, and the development status and prospects as well as the existing problems are analyzed.