The Effect of Simultaneous Si and Ti/Mo Alloying on High-Temperature Strength of Fe3Al-Based Iron Aluminides

被引：11

作者：

Vodickova, Vera ^{[1
]}

Svec, Martin ^{[2
]}

Hanus, Pavel ^{[1
]}

Novak, Pavel ^{[3
]}

Zadera, Antonin ^{[4
]}

Keller, Vojtech ^{[1
]}

Prokopcakova, Petra Pazourkova ^{[1
]}

机构：

[1] Tech Univ Liberec, Fac Mech Engn, Dept Mat Sci, Liberec 46117, Czech Republic

[2] Tech Univ Liberec, Fac Mech Engn, Dept Technol, Liberec 46117, Czech Republic

[3] Univ Chem & Technol, Dept Met & Corros Engn, Prague 16628, Czech Republic

[4] Brno Univ Technol, Dept Foundry Engn, Brno 60190, Czech Republic

来源：

MOLECULES | 2020年 / 25卷 / 18期

关键词：

Fe-Al-Si cast alloys; Ti and Mo alloying; long-term annealing; microstructure; high-temperature strength in compression; AL-MO SYSTEM; PHASE-EQUILIBRIA; MECHANICAL-PROPERTIES; LAVES PHASE; BEHAVIOR;

D O I：

10.3390/molecules25184268

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The effect of phase composition and morphology on high-temperature strength in the compression of Fe-Al-Si-based iron aluminides manufactured by casting was investigated. The structure and high-temperature strength in the compression of three alloys-Fe28Al5Si, Fe28Al5Si2Mo, and Fe28Al5Si2Ti-were studied. Long-term (at 800 degrees C for 100 h) annealing was performed for the achievement of structural stability. The phase composition and grain size of alloys were primarily described by means of scanning electron microscopy equipped with energy dispersive analysis and Electron Backscatter Diffraction (EBSD). The phase composition was verified by X-ray diffraction (XRD) analysis. The effect of Mo and Ti addition as well as the effect of long-term annealing on high-temperature yield stress in compression were investigated. Both additives-Mo and Ti-affected the yield stress values positively. Long-term annealing of Fe28Al5Si-X iron aluminide alloyed with Mo and Ti deteriorates yield stress values slightly due to grain coarsening.

引用

页数：11

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