Influencing surface plastic flow in metals using common chemical media. (2nd January 2019)

• Record Type: Journal Article
• Authors: Udupa, A.; Viswanathan, K.; Saei, M.; Mann, J. B.; Chandrasekar, S.
• Is Part Of: Philosophical magazine letters. Volume 99:Number 1(2019)
• Page Start: 1
• Page End: 11
• Publication Date: 2019-01-02
• Subjects: Embrittlement -- plastic deformation -- brittle-ductile transition -- metals; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2019.1600067
• Languages: English
• ISSNs: 0950-0839

Abstract

ABSTRACT: 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.