林修洲.Ti6Al4V 合金在Saline溶液中的扭动微动磨损[J].稀有金属材料与工程,2019,48(6):1742~1748.[Lin Xiuzhou.Torsional Fretting Wear of Ti6Al4V Alloys in Saline Solutions[J].Rare Metal Materials and Engineering,2019,48(6):1742~1748.]
Ti6Al4V 合金在Saline溶液中的扭动微动磨损
投稿时间:2018-02-07  修订日期:2019-05-23
中文关键词:  微动磨损  扭动微动  钛合金  Saline溶液
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      在球/面接触中存在四种微动模式,即切向、径向、转动和扭动微动,在生理介质中扭动微动是人工关节失效的主要原因之一。本文成功建立了一种可在恒温液体介质中实现球/面接触扭动微动的新的试验系统。利用该系统,在37℃的Saline溶液中进行了钛合金/二氧化锆陶瓷球的扭动微动试验,详细讨论了扭动微动的运行行为和损伤机理。结果表明,扭动微动动力学行为在很大程度上取决于扭动角位移振幅和周期数。研究建立了扭动微动运行工况图(RCFM),包括3个区域,即:部分滑移区(PSR),混合区(MFR)和完全滑移区(SR)。在部分滑移区,接触中心没有发现任何损伤,接触边缘上只观察到轻微的擦伤和磨损。在混合区,损坏区域从接触边缘向中心扩展,接触中心无损伤,接触边缘区域出现氧化磨损和损伤。在滑移区,整个接触区域均发生损伤,损伤机理主要是磨蚀磨损、氧化磨损、和粘着磨损。
Torsional Fretting Wear of Ti6Al4V Alloys in Saline Solutions
英文关键词:Fretting wear  Torsional fretting  Titanium alloy  Saline solution
英文摘要:
      Four fretting modes exist in ball-on-flat contact according to the direction of relative motion, i.e. tangential, radial, rotational, and torsional fretting. Torsional fretting in a physiological medium is one of the main reasons that artificial joints fail. A new test system was successfully established for torsional fretting in a liquid medium at a constant temperature in a torsional mode with a ball-on-flat contact. The torsional fretting experiments were conducted on Titanium alloys against Zirconium dioxide ceramic balls in a saline solution at 37°C, and the torsional fretting running behaviors and damage mechanisms were discussed in detail. The results showed that the dynamics behaviors were strongly depended upon the torsional angular displacement amplitude and the number of cycles. A running condition fretting map (RCFM) was established, which included 3 fretting running regimes: a partial slip regime (PSR), a mixed fretting regime (MFR), and a slip regime (SR). No damage was observed on the contact center and only slight scratch and wear were observed on the contact edge in the PSR. The damage zone extended to the contact center and the sticking zone (which exhibited no damage) contracted to the contact center with increases in the number of cycles, and some oxidation wear and damage presented on the contact edge region in the MFR. The damage mechanisms were primarily the result of abrasive wear, oxidation wear and adhesion wear in the SR.
作者单位E-mail
林修洲 四川理工学院 linxiuzhou@163.com 
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