高性能拉拔TC4钛合金丝材低屈服强度分析

The Analysis of The Reasons Why High-performance Drawing TC4 titanium alloy Wire Has Low Yield Strength

本文通过对拉拔工艺特点的分析,设计选用了一种TC4钛合金棒材,采用两种拉拔加工速度对Φ5mm丝材进行拉丝,并且测试了两种丝材成品的显微硬度、显微组织以及不同直径下的屈服强度和抗拉强度。根据试验结果,结合拉丝工艺和拉伸试验的特点,得出拉拔速度过快会导致丝材心部硬表面软的特性,最终使得测量所得屈服强度偏低的结论。

In this paper,through the analysis of the wire drawing process characteristics,design the selection of a TC4 titanium alloy bars using two drawing processing speed to Phi 5 wire and test two wire material microhardness,microstructure and all to the yield strength and tensile strength of the wire diameter.According to the test data and combined with the wire drawing process and tensile test characteristics,it is concluded that the drawing speed is too fast will lead to the hard surface soft surface of the wire material.