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Intermetallic Compounds in Al‐SUS316L Composites
Author(s) -
Park Kwangjae,
Kim Dasom,
Park Jehong,
Cho Seungchan,
Takamichi Miyazaki,
Kwon Hansang
Publication year - 2018
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201800312
Subject(s) - intermetallic , materials science , spark plasma sintering , composite material , electron microprobe , scanning electron microscope , thermogravimetric analysis , composite number , sintering , metallurgy , alloy , chemical engineering , engineering
Aluminum (Al)‐stainless steel 316L (SUS316L) composites are successfully manufactured by spark plasma sintering (SPS) using pure Al and SUS316L powders as the raw materials. The Al‐SUS316L composite powder is prepared from a 1:1 mixture by volume of Al and SUS316L by mechanical ball milling. This composite powder is subjected to SPS at four different temperatures (500, 550, 600, and 630 °C) at a pressure of 200 MPa and held at the desired temperature for 5 min. Intermetallic compounds such as AlFe 3 and Al 13 Fe 4 , which are detected based on their X‐ray diffraction (XRD) patterns, are created in the Al‐SUS316L composites during SPS. In addition, scanning electron microscopy (SEM), energy dispersive X‐ray spectroscopy (EDS), field emission‐electron probe microanalysis (FE‐EPMA), and thermogravimetric and differential thermal analysis (TG‐DTA) also confirm the formation of intermetallic compounds. Moreover, the authors conduct a detailed analysis of the intermetallic compounds using transmission electron microscopy (TEM). The intermetallic compounds are well dispersed in Al‐SUS316L composites and the layer of these becomes thicker as the sintering temperature increases to 630 °C. Moreover, the intermetallic compounds can help to make a strong chemical bonding between Al and SUS316L matrix. Consequently, the Al‐SUS316L composites manufactured by the SPS process can be applied in engineering industries such as the automobile, aerospace, and construction industries as high‐strength and lightweight materials.