Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mmta...39..666p&link_type=abstract
Metallurgical and Materials Transactions A, Volume 39, Issue 3, pp.666-671
Physics
1
Scientific paper
Two different hot rolling routes were developed to study the influence of thermomechanical factors on interface bonding, characterized by shear tests, and impact behavior of laminates containing five layers of ultrahigh carbon steel (UHCS-1.35C) and five layers of mild steel (MS-0.091C). The relationship between processing and microstructure has been studied by scanning electron microscopy (SEM) and electron dispersive spectroscopy examinations. It has been observed that the path for thickness reduction in the hot roll processing affects fundamentally the bond between layers. Specifically, a “severe” initial thickness reduction of 25 pct in the first cycle, allowing an important processing temperature drop (from 765 °C to 600 °C), produces a strong bond, which prevents delamination. On the contrary, the application of “soft” and gradual thickness reductions results in less tough bonds that permit delamination and, therefore, multiply the impact resistance.
Carreño Francisco
Cepeda-Jiménez C. M.
Pozuelo M.
Ruano O. A.
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