Microstructure and oxidation mechanism of multiphase Mo-Ti-Si-B alloys at 800 °C

被引：19
|
作者：
Zhao, Mi [1 ]
Xu, Boyang [1 ]
Shao, Yuman [2 ]
Zhu, Yan [3 ]
Wu, Jie [1 ]
Wu, Shusen [2 ]
Yan, Youwei [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Aerosp Engn, 1037 Luoyu Rd, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, 1037 Luoyu Rd, Wuhan 430074, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, 1037 Luoyu Rd, Wuhan 430074, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 187卷
基金：
中国国家自然科学基金;
关键词：
A; Intermetallics; B; SEM; Weight loss; C; High temperature corrosion; Oxidation; HIGH-TEMPERATURE OXIDATION; INTERMETALLIC ALLOY; BEHAVIOR; RESISTANCE; TI5SI3; CREEP; SILICIDE; STABILITY; NITROGEN;
D O I：
10.1016/j.corsci.2021.109518
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Three Mo-Ti-Si-B alloys with compositions of 50Mo-20Ti-20Si-10B, 40Mo-30Ti-20Si-10B and 30Mo-40Ti-20Si-10B (at.%) were designed and prepared by arc-melting. Microstructure evolution at 1600 degrees C and oxidation mechanism at 800 degrees C of these alloys were analyzed. 50Mo-20Ti-20Si-10B suffered from pesting because of a large volume fraction of Mo3Si, which produced porous products with severe volume expansion. Both 40Mo-30Ti-20Si-10B and 30Mo-40Ti-20Si-10B have better oxidation resistance. It can be inferred that during long-term oxidation, interactions between constituent phases contributed to the overall oxidation resistance of the alloys.
引用
收藏
页数：11
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