J. Mater. Sci. Technol. ›› 1997, Vol. 13 ›› Issue (6): 515-517.

• • 上一篇    下一篇

Microstructural Characteristics and Stability in a RapidlySolidified Al-Fe-Nb-Si Alloy

Shaokang GUAN and Ningfu SHEN(Dept. of Materials Science and Engineering, Zhengzhou University of Technology, Zhengzhou 450002, China) Yulin GONG(Central China Petroleum and Natural Gas Development Corporation of Henan Province, Zhengzhou 450002, China)Ha   

  • 收稿日期:1997-11-28 修回日期:1997-11-28 出版日期:1997-11-28 发布日期:2009-10-10

Microstructural Characteristics and Stability in a Rapidly Solidified Al-Fe-Nb-Si Alloy

Shaokang GUAN and Ningfu SHEN(Dept. of Materials Science and Engineering, Zhengzhou University of Technology, Zhengzhou 450002, China) Yulin GONG(Central China Petroleum and Natural Gas Development Corporation of Henan Province, Zhengzhou 450002, China)Ha   

  • Received:1997-11-28 Revised:1997-11-28 Online:1997-11-28 Published:2009-10-10

RichHTML

0

PDF (PC)

565

摘要： 1.Introductionffepidsolidificationtechnologyhassignificantin-fluenceonthedevelopmentofelevatedtemperatureAlalloyinthepastd.c.d.l1l.Recently,develoP-mentofelevatedtemperatureAlalloysforstruc-turaIapplicationshasbeenmainlyfocusedondis-persionstrengtheningtoreducedislocation-assistedcreeprate.Itisdesirabletohaveahighvolurnefrac-tiondistributionoffine,hardintermetallicphasepar-ticlesinmatriX,andl....

Abstract: The microstructure and stability in a rapidly solidified Al-Fe-Nb-Si alloy were studied by using transmission electron microscopy (TEM) with energy dispersive X-ray spectrometry (EDXS) and X-ray difFraction technique. It is shown that the addition of Nb to Al-Fe-Si alloy may increase undercooling of melt, and form the featureless zone structure, the size of the intercellular phases and the distance betWeen intercellulars of Al-Fe-Nb-Si alloy are two times smaller than that of Al-Fe-V-Si alloy under the same conditions. Further, the microstructure of the featureIess zone has the better thermal stability after annealing at 623 K for 24 h.