Oxidation Behavior of Three Different Zones of Linear Friction Welded Ti2AlNb Alloy

被引：10
|
作者：
Chen, Xi [1 ]
Xie, Faqin [1 ]
Ma, Tiejun [2 ]
Li, Wenya [2 ]
Wu, Xiangqing [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Mat Sci & Engn, Shaanxi Key Lab Frict Welding Technol, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 11期
关键词：
HIGH-TEMPERATURE OXIDATION; MICROSTRUCTURAL EVOLUTION; MECHANICAL-PROPERTIES; INTERMETALLIC ALLOYS; TENSILE PROPERTY; TITANIUM-ALLOY; HEAT-TREATMENT; TIAL ALLOYS; SUPERALLOYS; JOINT;
D O I：
10.1002/adem.201600529
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Linear friction welding is employed to weld a Ti2AlNb-based alloy. The oxidation behavior of three different zones, i.e., base metal, weld zone, and thermo-mechanically affected zone is studied at 800 degrees C exposed to air. The oxidation kinetics of the specimens consist of an initial parabolic kinetic and followed by a linear kinetic. For the base metal, absorption of more oxygen due to higher amount of alpha(2) phase leads to the thickest oxidation scale, while the preferential formation of Al2O3 for the joint contributes to better oxidation resistance. The presence of AlNbO4 for all the three zones can be observed after a prolong exposure in air, leading to a drastic acceleration of oxidation rate.
引用
收藏
页码：1944 / 1951
页数：8
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