Open AccessMICROSTRUCTURE, MECHANICAL PROPERTIES AND GEOMETRY OF A MODEL BATCH OF SEMI-SPHERICAL STEEL LINERS INTENDED FOR USE IN THE EXTRACTIVE INDUSTRY
Author(s) -
J. Stępień,
M. Burdek,
J. Marcisz,
A. Żak,
Jacek Janiszewski
Publication year - 2022
Publication title -
journal of metallic materials
Language(s) - English
Resource type - Journals
ISSN - 2657-747X
DOI - 10.32730/imz.2657-747.21.3.2
Subject(s) - microstructure , materials science , stamping , strips , pressing , grain size , metallurgy , ferrite (magnet) , composite material
The article presents the results of investigation of the microstructureand mechanical properties of Fe-based materials intended forthe production of semi-spherical liners for experimental shapedcharges. The tests were carried out on samples taken in three directionsin relation to the rolling direction: 0°, 45° and 90°, ofthe following materials: cold-rolled sheets made of DC04 steel,hot-rolled sheets made of 04J steel, and cold-rolled strips made of004G steel developed at Łukasiewicz – IMŻ and annealed at 650°C.Semi-spherical drawpieces with a diameter of 106.4 mm, intendedfor liners, were made of the sheets with the use of cold stamping.Tests of the microstructure and HV hardness of samples taken fromthe test batch were carried out on cross-sections along the pressingdirection and the model batch – on sections transverse to the stampingdirection The geometry of the model batch drawpieces was alsomeasured. The ferrite grain size evaluation was performed accordingto the ASTM E112 standard using μgrain software with a grainsize evaluation module using counting the number of intersectionsof grain boundaries with a circle.