对原始T91钢及在650℃下时效50-1700h的T91钢试样进行SEM观察以及能谱分析，着重对析出相进行了分析。结果表明；在时效过程中。析出相主要沿晶界析出，析出相主要由铬、钼元素组成，析出物颗粒总数随时效时间增加呈先减少后增加再减少的变化规律，析出相颗粒的尺寸则是先增大后减小最后球化长大的规律，析出相面积分数随着时效时间延长符合二次函数变化规律。
The original specimen of T91 and specimens aged for 50-1 700 h at 650 ℃ were studied by scanning electron microscopy （SEM） and energy dispersive spectrometer（EDS）, and their precipitated phases were analyzed as a key point. Results show that the phases precipitated along grain-boundfiry were composed of Cr and Mo mainly; the account of precipitated phase firstly decreased, then increased, and decreased again; the average size of precipitated phase firstly increased, then decreased and spheroidized finally; the relationship between area fraction of precipitated phase and aging time fittd well with a ,quadratic function.
参考文献
| [1] | 王卫泽,王钥,朱月梅,涂善东.我国P91/T91钢生产及其性能的现状与进展[J].机械工程材料,2010(06):6-9. |
| [2] | 史志刚,侯安柱,李益民.T91钢运行过程中力学性能和微观组织的变化[J].动力工程,2005(05):742-746. |
| [3] | Leona Korcakova;John Hald;Marcel A.J. Somers .Quantification of Laves phase particle size in 9CrW steel[J].Materials Characterization,2001(2):111-117. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%