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.

引用

页码：85 / 88

页数：4

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