What is it about?
Amorphous materials have different deformation mechanism in contrast to their crystalline counterparts.
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Why is it important?
Strain rate dependent nanoindentation experiment in Ni-Zr amorphous film suggests that rate dependent driven process as well as time-dependent relaxation yields negative strain rate sensitivity. Further, the proposed hypothesis has been proved by atomistic simulation, which confirms that the load relaxation during the constant load (hold off) period is similar to time-dependent relaxation (creep relaxation) obtained from the experimental outcomes.
Perspectives
This article provides me with the exact knowledge of the different deformation mechanism in amorphous alloy. I hope this work definitely generate interest in the researchers to investigate more about the structure and deformation related phenomenon in atomistic level in the metallic glass.
Mr BIBHU PRASAD SAHU
Indian Institute of Technology Kharagpur
Read the Original
This page is a summary of: Mechanism of negative strain rate sensitivity in metallic glass film, Journal of Alloys and Compounds, May 2019, Elsevier,
DOI: 10.1016/j.jallcom.2019.01.024.
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