Determination of the Intermetallic α-Phase Crystal Structure in Aluminum Alloys Solidified at Rapid Cooling Rates

被引：0
|
作者：
Jankowski, Joseph [1 ]
Kaufman, Michael [1 ]
Clarke, Amy [1 ]
Krishnamurthy, Krish [2 ]
Wilson, Paul [3 ]
机构：
[1] Colorado Sch Mines, Dept Met & Mat Engn, 1500 Illinois St, Golden, CO 80401 USA
[2] Honeywell Aerosp, Mat Engn, 1300 W Warner Rd, Tempe, AZ 85284 USA
[3] Boeing Res & Technol, 8900 Frost Ave, Berkeley, MO 63134 USA
来源：
LIGHT METALS 2019 | 2019年
基金：
美国国家科学基金会;
关键词：
alpha-phase; Intermetallics; Aluminum; 8009; Powder diffraction; Microprobe; Crystal structure; SI; APPROXIMANT;
D O I：
10.1007/978-3-030-05864-7_17
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Al-Fe-V-Si and Al-Fe-Cr-Si quaternary alloys were produced by arc melting and chill casting, and the crystal structures of the alpha-phase intermetallics (Pm-3 or Im-3, a = 1.25-1.27 nm) that formed are compared with those in the well-characterized Al-Mn-Si and Al-Fe-Mn-Si systems produced by arc melting. The crystal structures were refined using synchrotron x-ray powder diffraction, and compositions were determined using electron probe microanalysis (EPMA). It was shown that the Al-Fe-Cr-Si, Al-Fe-V-Si, and Al-Fe-Mn-Si systems appear to have the same alpha-phase structures after heat treatment at 500 degrees C. Additionally, a new alpha-phase with low Si content was observed in the Al-Fe-V-Si alloys in the as-cast condition.
引用
收藏
页码：121 / 127
页数：7
相关论文
共 50 条
12345