A Short Review on the Phase Structures, Oxidation Kinetics, and Mechanical Properties of Complex Ti-Al Alloys

被引：28
|
作者：
Lim, Hooi Peng [1 ]
Liew, Willey Yun Hsien [1 ]
Melvin, Gan Jet Hong [1 ]
Jiang, Zhong-Tao [2 ]
机构：
[1] Univ Malaysia Sabah, Fac Engn, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
[2] Murdoch Univ, Surface Anal & Mat Engn Res Grp, Chem & Phys, Coll Sci Hlth Engn & Educ, Perth, WA 5150, Australia
来源：
MATERIALS | 2021年 / 14卷 / 07期
关键词：
phase structures; oxidation kinetics; oxide scales; Ti-Al alloys; alloying elements;
D O I：
10.3390/ma14071677
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This paper reviews the phase structures and oxidation kinetics of complex Ti-Al alloys at oxidation temperatures in the range of 600-1000 degrees C. The mass gain and parabolic rate constants of the alloys under isothermal exposure at 100 h (or equivalent to cyclic exposure for 300 cycles) is compared. Of the alloying elements investigated, Si appeared to be the most effective in improving the oxidation resistance of Ti-Al alloys at high temperatures. The effect of alloying elements on the mechanical properties of Ti-Al alloys is also discussed. Significant improvement of the mechanical properties of Ti-Al alloys by element additions has been observed through the formation of new phases, grain refinement, and solid solution strengthening.
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页数：24
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