摘要
锆合金被普遍用做核反应堆中的燃料包壳和结构材料。在反应堆运行时，堆功率的波动和水冷却介质的流动．使燃料组件及其它构件发生循环变形，在极端情况下出现破损。本文概述了堆内包壳循环变形的特点，并分析了锆合金的循环变形行为，疲劳裂纹的形核与扩展，疲劳寿命及影响疲劳寿命的因素。
Zirconium alloys are used widely as the cladding materials of fuel elements and others structural materials in the nuclear reactors. And the flow - induced vibration and power fluctuation make the fuel assembly and other components deformed cyclically under the nuclear reactors operation condition, even failed in the severe cases. This paper describes briefly the characteristics of cyclic deformation for zirconium alloys used in the nuclear reactors. The cyclic deformation behavior of the alloy, fatigue initiation and growth, fatigue life and its influence factors are discussed.
出处
《中国材料科技与设备》
2006年第1期98-100,共3页
Chinese Materials Science Technology & Equipment
基金
四川省杰出青年学科带头人培养基金资助项目（03ZQ026-051）
武器装备预研基金资助项目（51481020203ZS8501）
关键词
锆合金
疲劳
循环变形
疲劳寿命
Zirconium alloys
Fatigue
Cyclic deformation
Fatigue life
