轧制和退火工艺对锆-4合金包壳管材氢化物取向的影响  

Effects of Rolling and Annealing Process on Hydride Orientation of Zr-4 Cladding Tubes

作　　者：赵林科[1] 王增民[1] 

机构地区：[1]国核宝钛锆业股份公司,陕西宝鸡7210014

出　　处：《钛工业进展》2011年第1期34-37,共4页Titanium Industry Progress

摘　　要：采用3种管材轧制方法、2种退火工艺和2种二次退火制度，研究了轧制加工Q值（减壁与减径比）、退火制度及二次退火对锆-4合金包壳管材氢化物取向的影响。结果表明，无论Q值大小，退火后的氢化物取向因子均大于退火前；加工Q值越大，管材的氢化物取向因子越小；退火温度对氢化物取向的影响与加工Q值有密切关系，Q值越大，退火温度对氢化物取向的影响越小；氢化物取向因子随成品退火温度的升高而升高；成品矫直的锆-4合金管材在450～470℃消除应力二次退火能显著地改善氢化物取向。The effects of rolling Q -values, annealing conditions and the second -annealing on the hydride orientation of zircaloy-4 cladding tubes have been investigated, by adopting three rolling methods, two kinds of annealing techniques experiments and second - annealing systems. The results indicate that whether the rolling Q - value is larger or smaller, the hydride orientation factor of tubes after annealing is larger than before ; also, the larger rolling Q - val- ue is, the smaller hydride orientation factor of tubes and the smaller influence of annealing temperature for the finished product on the hydride orientation of tubes is ; and the hydride orientation factor will increase along with increasing temperature, meanwhile, stress relief annealed hydride orientation factor is smaller than recrystallized annealed one; and the hydride orientation of straightened finished zircaloy-4 tubes can be improved evidently by using stress relief second - annealed at 450 - 470℃.

关 键 词：锆-4合金 包壳管 氢化物取向 退火制度 

分 类 号：TG339[金属学及工艺—金属压力加工] TG166