항산화 내열 합금 및 제조 방법

• Main Authors: LI SHANGPING, WANG XINGLEI, YIN FAJIE, WANG ZHENHUA, LUO HELI, GU ZHAOXIONG, WEI LIJUAN, WANG JIANTAO
• Format: Patent
• Language: Korean
• Published: 05.11.2020
• Subjects: ALLOYS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; FERROUS OR NON-FERROUS ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TREATMENT OF ALLOYS OR NON-FERROUS METALS

본 출원은 항산화 내열 합금 및 제조 방법에 관한 것으로, 합금 기술 분야에 속하며, 종래의 합금에서 O, S, N 함량이 높고, 합금 표면의 산화막에서 Al2O3 막의 비율이 낮고, Al 함량이 높을 경우 합금의 인성이 떨어지는 문제를 해결하였다. 본 출원의 항산화 내열 합금은, 질량 백분율로, Al: 2.5%-6%, Cr: 24%-30%, C: 0.3%-0.55%, Ni: 30%-50%, W: 2%-8%, Ti: 0.01%-0.2%, Zr: 0.01%-0.2%, Hf: 0.01%-0.4%, Y: 0.01%-0.2%, V: 0.01%-0.2%, N0.05%, O0.003%, S0.003%, Si0.5%, 나머지는 Fe 및 불가피한 불순물이며; 여기서, Ti과 V 중에서 하나를 포함한다. 항산화 내열 합금의 제조 방법은: 비활성 원소 물질의 용융 제련 → 정련 → 혼합 희토류 첨가 → 슬래그 첨가 → 활성 원소 합금화를 포함한다. 본 출원의 항산화 내열 합금의 온전한 항산화 레벨 온도은 1200℃에 달하며, 이로써 합금이 1200℃ 이하에서 장기적이고 안정적으로 사용될 수 있도록 구현하였다. The present disclosure relates to an oxidation-resistant heat-resistant alloy and a preparing method. The oxidation-resistant heat-resistant alloy of the present disclosure, by mass percentage, includes: 2.5%-6% of Al, 24%-30% of Cr, 0.3%-0.55% of C, 30%-50% of Ni, 2%-8% of W, 0.01%-0.2% of Ti, 0.01%-0.2% of Zr, 0.01%-0.4% of Hf, 0.01%-0.2% of Y, 0.01%-0.2% of V, N<0.05%, 0<0.003%, S<0.003%, and Si<0.5%, the balance being Fe and inevitable impurities; wherein merely one of Ti and V is comprised. The method for preparing the oxidation-resistant heat-resistant alloy includes: smelting with inactive element materials→refining→adding mixed rare earth→adding slag→alloying active elements.