MICROSTRUCTURES AND TENSILE PROPERTIES OF Fe-Cr-Al OXIDE DISPERSION STRENGTHENED FERRITIC ALLOYS FOR HIGH TEMPERATURE SERVICE COMPONENTS

被引：0
|
作者：
Park, Minha [1 ]
Bae, Jaeyoon [2 ]
Kim, Byung Jun [1 ]
Kim, Bu-an [2 ]
Noh, Sanghoon [2 ]
机构：
[1] Korea Inst Ind Technol, Dongnam Reg Div, Pusan 46938, South Korea
[2] Pukyong Natl Univ, Dept Mat Sci & Engn, Pusan 48513, South Korea
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2023年 / 68卷 / 01期
关键词：
Fe-Cr-Al; ferritic alloy; oxide dispersion strengthening; complex oxide; tensile strength;
D O I：
10.24425/amm.2023.141477
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In present study, Fe-22Cr-4.5Al oxide dispersion strengthened ferritic alloys were fabricated using a pre-alloyed powder with different minor alloying elements, and their microstructures and tensile properties were investigated to develop the advanced structural materials for high temperature service components. Planetary-typed mechanical alloying and uniaxial hot pressing processes were employed to fabricate the Fe-Cr-Al oxide dispersion strengthened ferritic alloys. Microstructural observation revealed that oxide dispersion strengthened ferritic alloys with Ti, Zr additions presented extremely fine micro-grains with a high number density of nano-scaled oxide particles which uniformly distributed in micro-grains and on the grain boundaries. These oxide particles were confirmed as a fine complex oxide, Y2Zr2O7. These favorable microstructures led to superior tensile properties than commercial ferritic stainless steel and oxide dispersion strengthened ferritic alloy with only Ti addition at elevated temperature.
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页码：85 / 88
页数：4
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