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中国腐蚀与防护学报  2012, Vol. 32 Issue (4): 296-299    
  研究报告 本期目录 | 过刊浏览 |
轧制变形对690合金特殊晶界比例及耐晶间腐蚀性能的影响
冯万里1,张乐福1,马明娟2
1. 上海交通大学核科学与工程学院 上海 200240
2. 宝钢股份特钢事业部 上海 200940
EFFECTS OF ROLLING ON THE SPECIAL GRAIN BOUNDARIES AND INTERGRANULAR CORROSION OF ALLOY 690
FENG Wanli1, ZHANG Lefu1, MA Mingjuan2
1. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240
2. Special Steel Branch, BaoSteel Co. Ltd, Shanghai 200940
全文: PDF(1576 KB)  
摘要: 不同轧制变形量的镍基690合金试样在1120℃×5 min的固溶处理和720℃×10 h的脱敏处理后,进行了晶粒度、特殊晶界比例及晶间腐蚀性能研究。结果表明,晶粒度随着轧制变形量的增加而升高,晶粒尺寸减小;特殊晶界比例在5%变形量试样达到最高,为67.7%,并随着轧制变形量的增加而减小,67%冷轧时特殊晶界比例降低到25.4%;ASTM G28-A法晶间腐蚀减重5%变形量的试样达到最低。
关键词 690合金晶粒度晶间腐蚀晶界工程特殊晶界    
Abstract:Alloy 690 specimens were deformed by rolling and followed by solution treatment at 1120℃ for 5 min and thermal treatment at 720℃ for 10 h. Grain size, special grain boundary concentration and resistance to intergranular corrosion were evaluated. The results show that the grain size number increases with the increase of deformation, concentration of special boundaries reaches the maximum of 67.7% for specimens with 5% plastic deformation, and decrease with the increase of deformation, and the concentration of special boundaries of specimens with 67{\%} deformation decreases to 25.4%. Intergranular corrosion was evaluated using ASTM G28-A method, and specimens with 5% deformation show the lowest weight loss rate.
Key wordsalloy 690    grain size    intergranular corrosion    grain boundary engineering    special boundary
收稿日期: 2011-07-20     
ZTFLH: 

TG113

 
基金资助:

国家自然科学基金委和宝山钢铁股份有限公司联合资助项目(50871130)

通讯作者: 张乐福     E-mail: lfzhang@sjtu.edu.cn
Corresponding author: ZHANG Lefu     E-mail: lfzhang@sjtu.edu.cn
作者简介: 冯万里,男,1982年生,硕士,研究方向为核工程材料

引用本文:

冯万里,张乐福,马明娟. 轧制变形对690合金特殊晶界比例及耐晶间腐蚀性能的影响[J]. 中国腐蚀与防护学报, 2012, 32(4): 296-299.
FENG Mo-Li, ZHANG Le-Fu, MA Meng-Juan. EFFECTS OF ROLLING ON THE SPECIAL GRAIN BOUNDARIES AND INTERGRANULAR CORROSION OF ALLOY 690. J Chin Soc Corr Pro, 2012, 32(4): 296-299.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2012/V32/I4/296

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