Metallurgical Joining of immiscible system: Pure Mg and Pure Fe

Das, Hrishikesh; Gwalani, Bharat; Ma, Xiaolong; Upadhyay, Piyush

doi:10.1016/j.matchar.2022.111821

Metallurgical Joining of immiscible system: Pure Mg and Pure Fe

Journal Article · 01 May 2022 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2022.111821· OSTI ID:1909816

Das, Hrishikesh ^[1]; ^[1]; Ma, Xiaolong ^[1]; Upadhyay, Piyush ^[1]

BATTELLE (PACIFIC NW LAB)

Understanding the metallurgical joinability of pure Mg and pure Fe and their interfacial microstructure lays the foundation for deciphering the complicated mechanism of joining various magnesium alloys and steels in applications. We first produced a successful metallurgical joint between pure Mg and pure Fe using the friction stir assisted scribe technique. Through detailed characterization, we found that the two immiscible metals are bonded by a critical interfacial oxide layer that spans only ~40 ± 10 nm. We present the first direct experimental evidence of the presence of a Mg/Fe oxide rich interfacial layer using high-resolution electron microscopy and discuss the contribution of oxide formation toward a successful joining mechanism.

Research Organization:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-76RL01830

OSTI ID:: 1909816

Report Number(s):: PNNL-SA-166753

Journal Information:: Materials Characterization, Vol. 187

Country of Publication:: United States

Language:: English

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