退火对Zr-4合金复合板组织和性能的影响  

Effect of annealing on microstructure and properties of Zr-4 alloy composite plate

作　　者：杨攀[1] 刘云明[1] 姜强[1] 姚力夫 张毅勇[1] 

机构地区：[1]中国核动力研究设计院,四川成都610213

出　　处：《金属热处理》2016年第8期72-75,共4页Heat Treatment of Metals

摘　　要：采用"热轧+冷轧+退火"法制备Zr-4合金复合板。利用EBSD分析再结晶度和晶粒尺寸,通过弯曲试验和疖状腐蚀试验检测复合板性能。结果表明:再结晶度和晶粒尺寸随着退火温度的升高而增加;当冷轧变形量为7%时,Zr-4合金复合板经550℃保温1 h退火后,其耐疖状腐蚀性能最优且弯曲性能满足要求,确定的最佳退火工艺制度为550℃保温1 h。Zircaloy-4 alloy composite plate was fabricated through the process of ＂hot-rolling ＋ cold-rolling ＋ annealing ＂.The recrystallization ratio and grain size were analysed by EBSD,and the properties were detected through bending test and nodular corrosion test.The results show that the recrystallization ratio and grain size increase with rise of annealing temperature.When the sample is coldrolled with 7% and annealed at 550 ℃ for 1 h,its nodular corrosion resistance is preferable and the bending property meets the requirement.It is concluded that when the cold-rolling deformation is 7%,the optimal heat treatment process is annealing at 550 ℃ for 1 h.

关 键 词：Zr-4合金复合板 退火 疖状腐蚀 弯曲性能 

分 类 号：TG166.7[金属学及工艺—热处理]