工業(yè)化高性能醫(yī)用TC4ELI合金棒材的研制Preparation of high properties TC4ELI alloy bars for medical application on industry

通過對以往工業(yè)化規(guī)模生產(chǎn)的TC4ELI合金工藝進行改進，研究退火溫度、時間對合金棒材顯微組織的影響規(guī)律，確定合金棒材加工過程中的最佳中間加熱或退火工藝，最終獲得了組織細小均勻、綜合力學(xué)性能優(yōu)良的醫(yī)用合金常用規(guī)格棒材。同時，合金在保持高塑性的同時，強度至少提高了50~100 MPa，完全滿足新型醫(yī)療器械對材料性能的市場要求，并可與進口產(chǎn)品相媲美。

The effect of annealing temperature and time on the microstructures of the bars was studied after improving the processing of TC4ELI alloy bars, and the optimum intermediate heating or annealing technology of alloy bars was also determined during processing. Eventually, the alloy bars with the fine and homogeneous microstructure and excellent mechanical properties were achieved. Meanwhile, the strength of the alloys with very high plasticity were increased by at least 50-100 MPa, which meet fully the need of the new medical devices to material properties, and can be comparable with the imported products.

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