Fe-Al과 Fe-Cr계 합금의 내 산화성에 미치는 Al과 Cr의 영향

• Published in: 대한금속·재료학회지, 48(11) Vol. 48; no. 11; pp. 981 - 988
• Main Authors: 김태완, Tae Wan Kim, 손인진, In Jin Shon, 고인용, In Yong Ko, 윤진국, Jin Kook Yoon, 도정만, Jung Mann Doh, 조승훈, Seung Hoon Jo
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 20.11.2010; 대한금속·재료학회
• Subjects: metal; oxidation; rolling; scanning electron microscopy; 재료공학
• ISSN: 1738-8228; 2288-8241

The effects of Cr and Al contents in Fe-Al and Fe-Cr alloys on oxidation resistance, hardness, and the thermal expansion coefficient were investigated. Fe-Al and Fe-Cr alloys above 10wt.%Al and 20wt.%Cr contents have a high oxidation resistance. The hardness of the Fe-Al and Fe-Cr alloys increased with an increase in Al and Cr contents due to solid solution or formation of an intermetallic compound. The coefficients of thermal expansion of the Fe-Al alloys were higher than those of the Fe-Cr alloys because the coefficient of thermal expansion of Al was higher than that of Fe and Cr.