High Throughput Exploration of Structure-Property Linkages in Dual Phase Steel

Structure property linkage was studied in this research on a dual phase steel through microindentation and different microstructural characterization techniques; EBSD, SEM. A combination of intercritical annealing temperature and bake hardening provides nine different microstructures and as a result different strength values. Three intercritical temperatures result in different volume fractions of martensite. Additional cold work of 5 and 10 % thickness reduction followed by bake hardening is another parameter which results in strengthening. Samples were labeled in the format of aaa-bb-ccc; where aaa, bb, ccc represent intercritical annealing temperature, amount of cold work, and temperature of bake hardening respectively. The data set includes three kind of data: SEM images, EBSD scans, and microindebtation. Each folder set contains raw data and metadata related to testing settings. Quantification of microstructure is done using two point correlation and principle component analysis to find most important microstructural features in this material. Indentation strength for each processing paths were measured using spherical indentation technique.