采用金相(OM)、X射线衍射(XRD)、扫描电子显微术(SEM)和透射电子显微术(TEM)等方法,研究了在不同温度长时间保温后水淬的Al48-60Cu33-50Fe0-10系列合金的凝固组织及相组成．结果表明, Gayle等报道的Al--Cu--Fe三元相图的单变量线(液相面交线)投影图中β相的液相面应当划分为β+φ两个区域．新增的四相反应为包共晶反应U8: L+β→IQC+φ, 反应温度约为800 ℃．X射线能谱(EDXS)分析表明, Ni2Al3结构的φ相的成分范围是Al47.3-50.6Cu45.4-48.1Fe4.5-5.2,而其成分中心是Al47.9Cu47.1Fe5.0。
A series of Al--Cu--Fe alloys with compositions ofAl48-60Cu33-50Fe0-10 was prepared and the phase constituents in thesealloys quenched from various temperatures were identified by using XRD, SEM, EDXS and EBSD attached to SEM, and TEM (including HRTEM). Compared with the polythermal projection proposed by Gayle et al, a main amendment is to divide the previous φ--region into β+φ two regions. A new ternary reaction is the quasiperitectic at U8: L+βIQC+φ.EDXS reveals that the composition of φ phase with Ni2Al3 structure is in Al47.3-50.6Cu45.4-48.1Fe4.5-5.2,and its center composition is Al47.9Cu47.1Fe5.0.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%