WaiCAM, School of Engineering, The University of Waikato, Private Bag 3105, 3240, Hamilton, New Zealand.
WaiCAM, School of Engineering, The University of Waikato, Private Bag 3105, 3240, Hamilton, New Zealand.
J Mech Behav Biomed Mater. 2019 Sep;97:41-48. doi: 10.1016/j.jmbbm.2019.05.014. Epub 2019 May 9.
Cu-bearing Ti alloys could be used as structural biomedical materials where the releasing of Cu ions is beneficial to lower infection incidences associated with surgical implants. The manufacturing of these alloys via powder metallurgy techniques can lower the production costs. In this study three ternary Cu-bearing Ti-xAl-yCu alloys were produced using conventional powder metallurgy. The mechanical properties increase with the amount of alloying elements. Samples of each composition were also forged to clarify the effect of subjecting them to hot deformation. Forging the samples improved the strength of the alloys due to the reduction of porosity and the refinement of the microstructural features. It is found that Ti-2Al-1Cu is the most ductile, Ti-6Al-4Cu is the strongest and Ti-10Al-5Cu has a purely elastic behaviour. Some of these powder metallurgy Ti-xAl-yCu alloys have better overall mechanical behaviour than their cast counterparts and therefore are valuable alternative to produce medical and dental implants with improved properties and reduced cost.
含铜钛合金可用作结构生物医学材料，其中铜离子的释放有利于降低与手术植入物相关的感染发生率。通过粉末冶金技术制造这些合金可以降低生产成本。在这项研究中，使用常规粉末冶金技术生产了三种三元含铜 Ti-xAl-yCu 合金。机械性能随合金元素含量的增加而提高。每个成分的样品也经过锻造，以澄清对其进行热变形的影响。由于孔隙率的降低和微观结构特征的细化，锻造样品提高了合金的强度。结果发现，Ti-2Al-1Cu 具有最高的延展性，Ti-6Al-4Cu 具有最强的强度，Ti-10Al-5Cu 具有纯弹性行为。这些粉末冶金 Ti-xAl-yCu 合金中的一些具有比其铸造对应物更好的整体机械性能，因此是具有改进性能和降低成本的替代方案，可用于生产医疗和牙科植入物。
