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

Materials

卷:14

WilleyYun Hsien Liew¹  GanJet Hong Melvin¹  HooiPeng Lim¹  Zhong-Tao Jiang² 

[1] Faculty of Engineering, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Sabah 88400, Malaysia;

[2] Surface Analysis and Materials Engineering Research Group, Chemistry and Physics, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 5150, Australia;

关键词: phase structures;    oxidation kinetics;    oxide scales;    Ti-Al alloys;    alloying elements;   

DOI  :  10.3390/ma14071677

来源: DOAJ

【 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 °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.

【 授权许可】

Unknown