Deformed CoCrNiAlTi medium-entropy alloy with excellent performance in medium-high temperature interval and preparation method of deformed CoCrNiAlTi medium-entropy alloy

• Main Authors: DU XINGHAO, ZU RUNFENG, YANG MINGCHENG, YUAN SHUAI, SHI CHUANXIN, WANG DAPENG, WU BAOLIN, YAN FEI, KIM SUNG-YEON
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2022
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; FORGE FURNACES; FORGING; HAMMERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a deformed CoCrNiAlTi medium-entropy alloy with excellent performance in a medium-high temperature interval and a preparation method thereof.The alloy is prepared from, by atomic percent, 31%-35% of Co, 28%-33% of Cr, 24%-28% of Ni, 4%-7% of Al and 4%-7% of Ti, the deformed CoCrNiAlTi medium-entropy alloy with the excellent performance in the medium-high temperature interval obtains high comprehensive mechanical performance in the medium-high temperature interval, and the performance of the medium-high temperature interval is improved. And the common weakness of medium-temperature brittleness of the high-temperature alloy is overcome. 本发明公开了一种中高温度区间性能优异的变形CoCrNiAlTi中熵合金及其制备方法，其中，所述合金按照原子百分比，包括如下成分：Co：31-35％、Cr：28-33％、Ni：24-28％、Al：4-7％、Ti：4-7％，所述中高温度区间性能优异的变形CoCrNiAlTi中熵合金在中高温度区间获得较高的综合力学性能，克服了高温合金普遍存在的中温脆性的弱点。