Effects of ultrasonic nanocrystal surface modification on the thermal oxidation behavior of Ti6Al4V

被引：31

作者：

Liu, Jun ^{[1
]}

Suslov, Sergey ^{[2
]}

Li, Shengxi ^{[3
]}

Qin, Haifeng ^{[4
]}

Ren, Zhencheng ^{[1
]}

Ma, Chi ^{[1
]}

Wang, Guo-Xiang ^{[1
]}

Doll, Gary L. ^{[4
]}

Cong, Hongbo ^{[3
]}

Dong, Yalin ^{[1
]}

Ye, Chang ^{[1
]}

机构：

[1] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA

[2] Qatar Fdn, QEERI, Doha, Qatar

[3] Univ Akron, Dept Chem & Biomol Engn, Akron, OH 44325 USA

[4] Univ Akron, Dept Civil Engn, Akron, OH 44325 USA

来源：

SURFACE & COATINGS TECHNOLOGY | 2017年 / 325卷

关键词：

Ti6Al4V; Thermal oxidation; Nanograins; UNSM; Surface severe plastic deformation; CORROSION-RESISTANCE; MICROSTRUCTURAL EVOLUTION; TRIBOLOGICAL PROPERTIES; RESIDUAL-STRESSES; WEAR-RESISTANCE; TI-6AL-4V ALLOY; STAINLESS-STEEL; CP-TI; TITANIUM; LAYER;

D O I：

10.1016/j.surfcoat.2017.04.051

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of Ultrasonic Nanocrystal Surface Modification (UNSM) on the thermal oxidation (TO) behavior of Ti6Al4V alloy has been investigated. The thermal oxidation was carried out at 500, 600 and 700 degrees C. The microstructure after UNSM and TO was characterized using scanning electron microscopy with energy dispersive spectroscopy. And phase identification was performed using X-ray diffraction. At 500 and 600 degrees C, the reaction capability are enhanced and the oxidation layer thickness is increased in the UNSM-treated Ti6Al4V alloy. This is attributed to nanoscale grain boundaries created by UNSM that serve as efficient diffusivity paths for interstitial gaseous atoms. When the TO temperature rises to 700 degrees C, due to dislocation elimination and grain coarsening induced by the high temperature, the oxidation layer thickness of the Ti6Al4V specimens show no significant difference. (C) 2017 Published by Elsevier B.V.

引用

页码：289 / 298

页数：10

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