Influencing surface plastic flow in metals using common chemical media

We demonstrate a unique mechanochemical effect - change in surface plastic flow by action of chemical media such as inks and glues - in large-strain deformation of metals. Unlike other well-known phenomena such as stress corrosion cracking and liquid metal embrittlement, the effect is not catastroph...

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Bibliographic Details
Published in:Philosophical magazine letters 2019-01, Vol.99 (1), p.1-11
Main Authors: Udupa, A., Viswanathan, K., Saei, M., Mann, J. B., Chandrasekar, S.
Format: Article
Language:English
Subjects:
brittle-ductile transition
Corrosion effects
Deformation
Ductile fracture
Ductile-brittle transition
Embrittlement
Fracture mechanics
Glues
Image segmentation
Inks
Liquid metal embrittlement
Metal cutting
Metals
Organic chemistry
Performance enhancement
plastic deformation
Plastic flow
Plastics
Stress corrosion
Stress corrosion cracking
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Summary:We demonstrate a unique mechanochemical effect - change in surface plastic flow by action of chemical media such as inks and glues - in large-strain deformation of metals. Unlike other well-known phenomena such as stress corrosion cracking and liquid metal embrittlement, the effect is not catastrophic and is largely material independent. High-speed in situ imaging shows that the media influence the flow by effecting a local ductile-to-brittle transition - from unsteady, large-amplitude, plastic folding, to repeated fracture and segmentation - with large decrease in deformation forces. The benign nature of the media offers opportunities for enhancing performance of metal cutting and deformation processes.
ISSN:0950-0839
1362-3036
DOI:10.1080/09500839.2019.1600067