This work investigates the torque sensing capabilities for Galfenol. A static test and rotating static test are performed on a single crystal and a rolled polycrystal Galfenol patch. The rotating static test demonstrates Galfenol's noncontact use. Both the static and rotating static tests show a linear response for the Galfenol patches.
Grain growth and grain boundary character distribution relationships in Fe-Ga rolled sheet is investigated to study the influence of H2S gas content in argon on the development of selective grain growth through secondary recrystallization. Abnormal growth of (011) grains was predominant at the low content of H2S gas, while (113) grain growth was well developed at contents higher than 1.33% H2S. On the other hand, the development of (001) grains was challenging to produce because it is very sensitive to the anneal environment and has a relatively low fraction of high energy grain boundaries associated with misorientation angles that determine the mobility of boundaries.
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