为了研究Ru在含Re单晶高温合金的作用,利用扫描电镜和透射电镜以及电子拉伸实验机对不同Ru含量的三种单晶高温合金的拉伸性能和变形组织及形貌进行观察和分析,研究结果表明:三种合金随着Ru含量的增加,合金热处理态γ'相尺寸逐渐减小,立方度明显增加.900℃下的拉伸实验表明随着Ru含量的增加,合金的屈服强度和抗拉强度都略有增加.900℃下三种合金的断裂方式均为纯剪切型断裂.变形机制为位错切割γ'位错对夹着反相畴界模式.因此,Ru的加入略微增加了合金的强度,但没有改变合金的变形机制和断裂特征.
参考文献
| [1] | 陈荣章.单晶高温合金发展现状[J].材料工程,1995(08):3. |
| [2] | KOIZUMI Y;KOBAYASHI T;YOKOKAWA T.Development of next generation Ni-base single crystal superalloys[A].Warrendale,PA:TMS,2004:35-43. |
| [3] | YOKOKAWA T;OSAWA M;NISHIDA K et al.Partitioning behavior of platinum group metals on the γ and y' phases of Nibase superalloys at high temperatures[J].Scripta Materialia,2003,49(10):1041-1046. |
| [4] | Hobbs, RA;Zhang, L;Rae, CMF;Tin, S .The effect of ruthenium on the intermediate to high temperature creep response of high refractory content single crystal nickel-base superalloys[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):65-76. |
| [5] | L.J. CARROLL;Q. FENG;J.F. MANSFIELD .High Refractory, Low Misfit Ru-Containing Single-Crystal Superalloys[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2006(10):2927-2938. |
| [6] | L.J. Carroll;Q. Feng;J.R. Mansfield .Elemental partitioning in Ru-containing nickel-base single crystal superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):292-299. |
| [7] | ZHANG J X;MURAKUMO T;KOIZUMI Y et al.Interracial dislocation networks strengthening a fourth-generation singlecrystal TMS-138 superalloy[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2002,33(12):3741-3746. |
| [8] | An-Chou Yeh;Akihiro Sato;Toshiharu Kobayashi .On the creep and phase stability of advanced Ni-base single crystal superalloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):445-451. |
| [9] | Cong Wang;Chong-Yu Wang .Density Functional Theory Study Of Ni/ni_3al Interface Alloying With Re And Ru[J].Surface Science: A Journal Devoted to the Physics and Chemistry of Interfaces,2008(14):2604-2609. |
| [10] | 赵明汉;张继;冯滌.高温合金断口分析[M].北京:冶金工业出版社,2006 |
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%