脊柱顶丝用Ti-6Al-4V ELI钛合金性能的研究

发布时间：2018-05-09 06:16

  本文选题：医用Ti-Al-V + ELI合金　； 参考：《热加工工艺》2014年04期

【摘要】：研究Ti-6Al-4V ELI化学成分中Fe和O含量(A,B组),热处理制度:退火温度和时间(C,D组)等四个因素分别对脊柱顶丝类医用钛合金Ti-6Al-4VELI棒材力学性能的影响,设计并进行了相应的4因素3水平正交实验。通过对上述实验所得基本力学性能数据的分析,结果表明:在各因素水平变化范围之内,强度以高O含量(B组)的Ti-6Al-4V ELI最高,其对强度影响大小的次序为:氧含量、铁含量、退火温度和退火时间;而塑性则以退火时间为D3组时最高,其对断后伸长率影响由大到小次序为:铁含量(退火时间)、退火温度、氧含量;同时硬度则以高氧含量组的最高,其对硬度影响由大到小的次序则为:氧含量、铁含量、退火时间和退火温度。当Fe含量控制在0.2%,O含量控制在0.13%左右的Ti-6Al-4V ELI钛合金,采用650~700℃/1.5 h退火处理时,可获得强度(Rm1050MPa,Rp0.2960 MPa),塑性(A15%,Z50%),硬度(HV310)理想的综合性能优异作为脊柱顶丝类医用的高强韧性Ti-6Al-4V ELI钛合金棒材。
[Abstract]:The effects of Fe and O contents in the chemical composition of Ti-6Al-4V ELI on the mechanical properties of medical titanium alloy Ti-6Al-4VELI bars of spinal apical wire were studied. The four factors, such as heat treatment, annealing temperature and time, respectively, were used to determine the mechanical properties of the Ti-6Al-4VELI bars. The orthogonal experiments with 4 factors and 3 levels were designed and carried out. Through the analysis of the data of basic mechanical properties obtained from the above experiments, the results show that the strength of Ti-6Al-4V ELI with high O content and B content is the highest in the range of level change of each factor, and the order of its influence on the strength is: oxygen content, iron content, and so on. Annealing temperature and annealing time, and plasticity is the highest when annealing time is D3, and the influence on elongation after break is in the order of iron content (annealing time, annealing temperature, oxygen content), and hardness is the highest in high oxygen content group. The order of influence on hardness is oxygen content, iron content, annealing time and annealing temperature. When Fe content is controlled at 0.2% and O content is about 0.13%, Ti-6Al-4V ELI titanium alloy is annealed at 650 鈩，

本文编号：1864921