Microstructural evolution and growth behavior of intermetallic compounds at the liquid Al/solid Fe interface by synchrotron X-ray radiography

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2017.12.024· OSTI ID:22804897

Ding, Zongye; Hu, Qiaodan; Lu, Wenquan; Ge, Xuan ^[1]; Cao, Sheng ^[2]; Sun, Siyu; Yang, Tianxing; Xia, Mingxu; Li, Jianguo ^[1]

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1. Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai (China)
2. Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800 (Australia)

Highlights: • A layered and tongue-like η phase was in-situ observed by synchrotron radiation X-ray radiography. • The coalescence of η phase bottom resulted in dissolution, further increasing the growth rate. • The θ phase growth behavior with different morphologies during cooling was analyzed. - Abstract: The growth of Inter-Metallic Compounds (IMCs) with dissolution was investigated on the liquid Al/solid Fe interconnection by using synchrotron radiation real-time imaging technology. At the initial stage of holding at 850 °C, a layer of the η-Fe{sub 2}Al{sub 5} phase formed at the interface, and tongue-like η grew into α-Fe. The tongue-like η phase had a stronger (001) texture than the layered phase. The coalescence of tongue-like η started at the bottom, followed by the dissolution of IMCs, which leads to a further increase in its growth rate. During solidification stage, the dotted, needle-like and flake θ-FeAl{sub 3} phases were sequentially formed.

• OSTI ID: 22804897
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 136; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
DISSOLUTION
INTERFACES
INTERMETALLIC COMPOUNDS
IRON
LAYERS
MICROSTRUCTURE
SOLIDIFICATION
SOLIDS
SYNCHROTRON RADIATION
TEXTURE
X-RAY RADIOGRAPHY