Michael Stoltz

Title: Michael Stoltz and Advances in High-Manganese Steel

Introduction

Michael Stoltz is an inventor associated with ArcelorMittal in Maizières-lès-Metz, France. His listed patent concerns the composition, microstructure, and manufacture of advanced cold-rolled steel sheet.

Latest Patents

Stoltz is credited with 1 patent: “Cold rolled, annealed and tempered steel sheet and method of manufacturing the same.” The invention describes a cold-rolled, annealed, and partitioned steel sheet made from a steel composition containing 6.0–11.0% manganese, 0.05–0.18% carbon, and specified amounts of molybdenum and boron, with optional alloying elements and iron as the balance.

The sheet’s microstructure may include ferrite, retained austenite, and partitioned martensite, while limiting fresh martensite. The patent also specifies constraints on the size and proportion of austenite islands and on the carbon and manganese content of the austenite. These features define a carefully controlled steel structure and a method for producing the sheet.

Career Highlights

Stoltz’s listed patent reflects work on steel processing and microstructure design at ArcelorMittal. The invention focuses on combining alloy composition and heat-treatment-related structural characteristics in a cold-rolled steel product.

Collaborations

Astrid Perlade and Kangying Zhu are identified as Stoltz’s coworkers. The available information does not specify their roles in the patent or the extent of their collaboration.

Conclusion

Michael Stoltz’s listed patent documents an ArcelorMittal innovation in engineered steel sheet, emphasizing controlled composition and microstructure in its manufacturing approach.