通过温度和压力变化精确控制U-2.5%Nb合金氢腐蚀的氢消耗量,利用万能拉伸试验机测试不同程度氢腐蚀对U-2.5Nb合金力学性能的影响,用金相和SEM表征该合金氢腐蚀的形貌和断面形貌.结果表明,材料的延伸率和断面收缩率在氢蚀后下降明显,抗拉强度随着腐蚀程度的增加略有下降.根据腐蚀形貌和断面形貌讨论了氢点蚀影响材料力学性能的机制,即氢点蚀引起的蚀坑和微裂纹是造成力学性能下降的主要原因.
参考文献
| [1] | Ritchie A G .[J].Journal of Nuclear Materials,1986,139:121. |
| [2] | Ritchie A G .[J].Journal of Nuclear Materials,1984,120:143. |
| [3] | Ritchie A G .[J].Journal of Nuclear Materials,1986,140:197. |
| [4] | Magnani M J .Reaction of Uranium and Its Alloys with Water Vapor at Low Temperatures,SAND-74-0145[R].Sandia Laboratory,USA,1974. |
| [5] | Fonnesbeck J E .Quantitative Analysis of Hydrogen Gas Formed by Aqueous Corrosion of Metallic Uranium.ANL-00/19[R].Argonne National Laboratory,USA,2000. |
| [6] | Moreno D;Arkush R;Zalkind S .[J].Journal of Nuclear Materials,1996,230:181. |
| [7] | John A;Robert J;Marilyn E .A Model for the Initiation and Growth of Metal Hydride Corrosion LA-UR-00-5496[R].Los Alamos National Laboratory,USA,2000. |
| [8] | Shamir N .[J].Applied Surface Science,2007,253:5957. |
| [9] | Powell G L;Kirkpatrick J R .[J].Journal of Alloys and Compounds,1997,167:253. |
| [10] | Balasubramanian K;Sikehaus W;Balazs B .Computational Modeling of Uranium Corrosion and the Role of Impurities(Fe,Cr,AI,C and Si)UCRL-CONF-216838[R].Lawrence Radiation Laboratory,USA,2005. |
| [11] | Wallwork A;Burnell G;Morris S .[J].Journal of Strain Analysis,2005,40:139. |
| [12] | Lepoutre D .Embrittlement of the U-7.5Nb-2.5Zr Uranium Alloy in Gaseous EnvironmentsCEA-R-5239[R].French Atomic Energy and Alternative Energies Commission,FRANCE,1984. |
| [13] | Greenbaum Y;Barlam D;Mintz M H .[J].Journal of Alloys and Compounds,2008,452:325. |
| [14] | 许彭拴 .U-2.5Nb 合金在不同环境条件的拉伸性能[R].Mianyang:China Academy of Engineering Physics,2000. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%