Ti6554合金鑄錠擠壓工藝研究

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中圖分類號：TG376.2；TG376.8 文獻標志碼：A

文章編號：1001-4934（2025）03-0054-06

Research on extrusion process of Ti6554 alloy ingot

GAO Zhanghu'， SONG Liping1， SUN Hui1，XU Guangsheng12

（1. Shaanxi Polytechnic Institute，Xianyang 712OOo，Shaanxi，China; 2. Engineering Research Center of High-performance Aerospace Materials and Devices in Universities of Shaanxi Province， Xianyang 712ooo， Shaanxi， China）

Abstract： In this paper， the influences of extrusion temperature and extrusion ratio on the microstructure and properties of a new type of small-sized β titanium alloy Ti6554 bar during extrusion were explored. By manipulating different processing parameters， the internal microstructure and the factors affecting the material properties were analyzed. The results indicate that the grains of the alloy are refined significantly at a higher extrusion ratio and a more appropriate extrusion temperature， thereby enhancing the mechanical strength and overall performance of the material. In this study， to concurrently consider the degree of grain refinement after extrusion and the mechanical properties at room temperature and avoid small deformation during utilization， the optimized extrusion process parameters of Ti6554 titanium alloy are as follows：extrusion temperature 1080°C ，extrusion ratio 4，and extrusion speed 30～45mm/s

Key words： Ti6554;extrusion temperature; extrusion ratio； organizational performance; tensile fracture analysis

0 引言

Ti6554是寶鈦集團近年來研發(fā)的一種高強高韌 β 鈦合金，具有較高的疲勞強度和抗裂性，同時保持了較低的密度，這使其在制造飛機結構部件、高性能汽車零件以及要求極高耐久性的應用中尤為重要[1]。（剩余5085字）