{'fraction_non_alphanumeric': 0.02033271719038817, 'fraction_numerical': 0.024029574861367836, 'mean_word_length': 5.898089171974522, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The Influence of Isothermal Semi‐solid Processing on Microstructure, Hardness and Young's Modulus of a Hypoeutectic Chromium Steel

Steel billets of the hypoeutectic chromium steel X210CrW12 (material number 1.2436, AISI D6) are reheated into the semi‐solid state and isothermally extruded using a ceramic extrusion tool at low process forces. Extruded bars show good microstructural as well as chemical homogeneity. Nanoindenter measurements of untreated and extruded samples prove that hardness and Young's modulus are increased after semi‐solid extrusion. Hardness values are retained after annealing, while Young's modulus drops back to the initial value of untreated X210CrW12. Results are consistent with metallurgical investigations on phase formation and mechanical properties of X210CrW12 processed in the semi‐solid state. Thus, the viability of isothermal processing and the underlying tool concept is demonstrated in terms of work piece quality. The suitability of X210CrW12 for semi‐solid processing and the potential improvement of mechanical properties are validated.