METHOD OF PREPARING COHERENT OXIDE DISPERSION STRENGTHENED HIGH-ENTROPY ALLOYS AND COHERENT OXIDE DISPERSION STRENGTHENED HIGH-ENTROPY ALLOYS

• Main Authors: CHUNG SEUNG HYEOK, RYU HO JIN
• Format: Patent
• Language: English; Korean
• Published: 24.05.2022
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The present invention relates to a method for preparing an oxide dispersion strengthened high-entropy alloy and an oxide dispersion strengthened high-entropy alloy and, more specifically, to a method for preparing a coherently interfaced oxide dispersion strengthened high-entropy alloy and a coherently interfaced oxide dispersion strengthened high-entropy alloy, wherein the method comprises the steps of: forming alloy powder by melting and mixing four or more kinds of base element powder and a raw material for oxide formation; mechanically alloying the alloy powder; and sintering the mechanically alloyed powder at high temperature, wherein the raw material for oxide formation is M-A alloy powder, M is at least one of the base elements, and A is an element for oxide formation. The present invention can improve mechanical properties. 본 발명은, 산화물 분산 강화 고엔트로피 합금의 제조방법 및 산화물 분산 강화된 고엔트로피 합금에 관한 것으로, 보다 구체적으로, 4종 이상의 기지원소 분말, 및 산화물 형성용 원료를 용융 혼합하여 합금분말을 형성하는 단계; 상기 합금분말을 기계적 합금화하는 단계; 및 상기 기계적 합금화된 분말을 고온 소결하는 단계; 를 포함하고, 상기 산화물 형성용 원료는, M-A 합금분말이며, 상기 M는 기지원소 중 적어도 하나이고, 상기 A는 산화물 형성용 원소인 것인, 정합계면을 갖는 산화물로 분산강화된, 고엔트로피 합금의 제조방법 및 정합계면을 갖는 산화물로 분산강화된, 고엔트로피 합금에 관한 것이다.