文章信息/Info

Title:

Influence of Processing Technology on Corrosion Performance of Zr-4 Alloy Pipe

文章編號:

1674-3962(2024)08-0760-05

作者:

徐文征; 羅倩倩; 李小影; 高博

國核寶鈦鋯業(yè)股份公司,陜西 寶雞 721013

Author(s):

XU Wenzheng;  LUO Qianqian;  LI Xiaoying;  GAO Bo

State Nuclear Bao Ti Zirconium Industry Co., Ltd., Baoji 721013,China

關(guān)鍵詞:

Zr-4合金; 腐蝕性能; Q值; 顯微組織

Keywords:

Zr-4 alloy;  corrosion performance;  Q value;  microstructure

分類號:

TG146.4+14;TL352

DOI:

10.7502/j.issn.1674-3962.202212015

文獻(xiàn)標(biāo)志碼:

A

摘要:

采用Zr-4合金Φ63.5 mm×10.92 mm管坯，在不同軋制工藝下，即不同軋制Q值和累積退火參數(shù)下制備管材，對比了管材耐癤狀腐蝕性能和長期耐均勻腐蝕性能，結(jié)果表明：累積退火參數(shù)在0.96×10-18~1.17×10-18 h時，第二相顆粒尺寸在70~90 nm的范圍內(nèi)，第二相顆粒尺寸隨著累積退火參數(shù)降低而減小，可在一定程度上改善Zr-4合金管材耐癤狀腐蝕性能；軋制中間道次Q值從0.687提升至1.0以上時，管材徑向織構(gòu)因子增大，耐癤狀腐蝕性能顯著提升；在上述工藝參數(shù)范圍內(nèi)，管材長期耐均勻腐蝕性能無明顯變化。

Abstract:

In this paper, three kinds of pipes were processed from the Zr-4 alloy tube with size of Φ 63.5 mm×10.92 mm under different rolling process parameters, namely under different rolling Q values and cumulative annealing parameters, the nodular and long term uniform corrosion resistance were compared. The results show that, when cumulative annealing parameters are 0.96×10-18~1.17×10-18 h, the average sizes of the second phase particles of pipes are in the range of 70~90 nm，the size of the second phase particles becomes finer when cumulative annealing parameter decreases, the nodular corrosion resistance of Zr-4 alloy pipe is better. When the Q value of intermediate pass is increased from 0.687 to more than 1.0, the radial texture of pipe is enhanced, and the nodular corrosion resistance is significantly improved. Within the above parameter range, the long term uniform corrosion performance has no obvious change.