|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||High Performance Steels
||Strain Partitioning Analysis during Tensile Tests in Intercritically Deformed Steels
||Unai Mayo, Nerea Isasti, Jose Rodriguez-Ibabe, Pello Uranga
|On-Site Speaker (Planned)
Different characterization techniques in the macro, meso and microscale were applied to analyze the strain partitioning during a tensile test in an intercritically deformed Nb-V microalloyed steel. A grain identification and correlation technique based on EBSD was developed together with a discretization methodology, enabling the distinction between different ferrite populations (non-deformed ferrite, NDF, and deformed-ferrite, DF, grains). Nanoindentation technique was applied in the initial microstructure to measure the nanohardness for both ferrite families and the microstructural evolution during the interrupted tensile tests was monitored using EBSD scans. The grain boundary and Kernel Misorientation maps show a different evolution of low- and high-angle grain boundary during tensile tests for different initial NDF/DF balances. NDF population accommodates most of the deformation at initial strain intervals. For higher strains, NDF and DF grains behave similarly to the strain applied.
||Iron and Steel, Characterization, Mechanical Properties