Cladding tube always worked under complex stress, and then it is very significant to study the deformation behavior of Zircaloy-4 for reasonable design of nuclear reactor under complex stress.

• 燃料元件包壳服役时总是承受复杂的应力作用，因此研究复杂载荷作用下，Zr-4合金包壳的的变形行为，对反应堆安全设计十分重要。