Microstructure development during high-velocity deformation
Source abstract
Abstract
An austenitic stainless steel was deformed at high (103 s−1) strain rates at two levels of strain by electromagnetic forces. Transmission electron microscopy (TEM) studies, X-ray diffraction analysis, and superconducting quantum-interference device (SQUID) measurements show that high strain rates induce the formation of stacking faults and twin structures, enhance the tendency for ɛ-martensite formation, and suppress the amount of α′-martensite. The increased presence of stacking faults and twin structures at high strain rates can be explained by an easy nucleation of partial dislocations at high strain rates and a superior aptitude for partial dislocations to react to high strain rates due to their jump frequency. The suppression of α′-martensite can be explained by the adiabatic heating produced during electromagnetic forming.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and Mechanical Properties of Steels · Microstructure and mechanical properties · High-Velocity Impact and Material Behavior
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
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