利用XRD、DSC以及TEM方法研究了快速凝固Al-20Si-5Fe合金退火态的微观组织、弥散相结构和相转变.结果表明,快凝Al-20Si-5Fe合金组织中存在两种弥散相,δ-Al4FeSi2和初生Si相.退火温度低于310℃时,δ-Al4FeSi2相未明显粗化;当退火温度高于310℃时,亚稳相δ-Al4FeSi2转变成稳定相β-Al5FeSi,β-Al5FeSi相随退火温度的提高而明显粗化.高温退火使初生Si相发生一定的重溶和粗化,但粗化速率显著低于β-Al5FeSi相,原因在于合金中Fe元素抑制了Si相的粗化.
参考文献
| [1] | T. S. Kim;S. J. Hong;W. T. Kim;C. W. Won;S. S. Cho;B. S. Chun .Microstructures and mechanical properties of Al-20Si-xFe (x=3, 5, 7) alloys manufactured by rapid solidification processing[J].Materials transactions,1998(12):1214-1219. |
| [2] | 袁晓光;徐达鸣 等.喷射沉积Al-Si-Fe-Cu-Mg合金的微观组织和力学行为[J].金属学报,1997,33(03):248. |
| [3] | Zhou J;Duszczyk J;Korevaar M B .Microstructural features and final mechanical properties of the iron-modified Al-20Si-3Cu-1Mg alloy product processed from atomized powder[J].Journal of Materials Science,1991,26:3041. |
| [4] | Zhou J;Duszczyk J;Korevaar M B .As-spray-deposited structure of an Al-20Si-5Fe spray perform and its development during subsequent processing[J].Journal of Materials Science,1991,26:5280. |
| [5] | Stefaniay V;Griger A;Turmezey T .Intermetallic phase in the aluminum-side corner of the AlFeSi-alloy system[J].Journal of Materials Science,1987,22:539. |
| [6] | 袁晓光;崔成松 等.快速凝固Al-Si-Fe-Cu-Mg合金的热稳定性[J].材料科学与工艺,1998,6(03):10. |
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%