Outstanding Mild Wear Performance of Ti-29Nb-14Ta-4.5Zr Alloy Through Subsurface Grain Refinement and Supporting Effect of Transformation Induced Plasticity

被引：18
作者：
Haftlang, Farahnaz [1 ]
Zarei-Hanzaki, Abbas [1 ]
Abedi, Hamid Reza [1 ]
Malek, Joraslov [2 ]
Farabi, Ehsan [3 ]
Beladi, Hossein [3 ]
机构：
[1] Univ Tehran, Hot Deformat & Thermomech Proc Lab High Performan, Sch Met & Mat Engn, Coll Engn, Tehran, Iran
[2] Czech Tech Univ, Fac Mech Engn, Karlovo Namesti 13, Prague 12135 2, Czech Republic
[3] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia
来源：
METALS AND MATERIALS INTERNATIONAL | 2020年 / 26卷 / 04期
关键词：
Titanium alloy; Transformation induced plasticity; Fine-grained structure; Tribological performance; TI-NB-ZR; BETA-TITANIUM ALLOY; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; BIOMEDICAL APPLICATIONS; PHASE-TRANSFORMATIONS; PURE TI; DEFORMATION; MICROSTRUCTURE; TA;
D O I：
10.1007/s12540-019-00344-w
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tribological performance of Ti-29Nb-14Ta-4.5Zr alloy against Ti-6Al-4V ELI was investigated for the mild condition, emphasized on the superficial changes and changes underneath the wear track. The results of X-ray photoelectron spectroscopy indicated that TiO2, Nb2O, Ta2O and Zr2O oxides aggregated to form a protective tribo-layer, which effectively prevented further superficial damages. Development of fine-grain layer and the occurrence of phase transformation of beta -> alpha''/omega were characterized as the main wear-induced evolution of the subsurface layer. The wear-induced transformation increases the hardenability of the subsurface layer, effectively support the worn surface and prevent premature cracking. These phenomenal evolutions were led to a simultaneous increase in the strength and ductility and subsequently wear loss reduction in comparison to the Ti64 ELI. Graphic
引用
收藏
页码：467 / 476
页数：10
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