随着新的第IV代裂变反应堆概念的实现、核聚变反应堆计划（ITER）的实施以及空间科学的迅速发展，抗辐照材料需要面临着高热辐照、H/He离子辐照损伤的威胁。虽然金属玻璃比传统材料具有更好的耐辐照性能，但是也存在高温不稳定性、辐照肿胀严重以及极限尺寸小等难以忽略的局限性。和金属玻璃结构类似的高熵合金具有的高熵效应、迟滞扩散效应、晶格畸变效应和“鸡尾酒”效应使其具有高强度、耐高温等优异的力学性能和高温辐照稳定性。本项目拟用强流脉冲离子束辐照模拟聚变堆等辐照环境的热效应，研究由低活化高熔点元素制备难熔高熵合金的热稳定性机理；研究难熔高熵合金的H/He离子辐照结构稳定性的微观物理机制。探讨强流脉冲离子束的热效应和氢氦离子辐照效应的协同作用对高熵合金结构稳定性影响，同时为高熵合金耐中子辐照的结构稳定性提供参考。探索高熵合金作为聚变堆等辐照环境候选材料的可能性。

With the realization of the new concept of the IV generation fission reactor, the implementation of nuclear fusion reactor (ITER) and the rapid development of space science, the selection of anti-irradiation materials needs to face the threat of high heat irradiation and H/He ion irradiation damage. Although metallic glass has better irradiation resistance than traditional materials, it also has some limitations such as high temperature instability, severe irradiation swelling and small limit size. High entropy alloy, similar to the structure of metallic glass, has high entropy effect, hysteresis diffusion effect, lattice distortion effect and "cocktail" effect, which makes it have some excellent mechanical properties such as high strength, high temperature resistance and so on, as well as high temperature irradiation stability. In this project, the thermal effect of irradiation environment such as fusion reactor is simulated by high-intensity pulsed ion beam irradiation to study the thermal stability mechanism of refractory high-entropy alloy prepared from low activation and high melting point elements; The microphysical mechanism of H/He ion irradiation stability of refractory high entropy alloy was studied. The synergistic effects of high-intensity pulsed ion beam and hydrogen, helium ion irradiation on the structural stability of high entropy alloy were investigated. At the same time, it provides reference for the structural stability of high entropy alloy against neutron irradiation. Explore the possibility of high entropy alloy as a candidate material in the irradiation environment.