EBSD microalloying Bs temperature EELS HEXRD HSLA steels Hall-Petch coefficient History of engineering & technology Nb microalloying Research & information: general Ti-Mo steel Zener pinning abnormal grain growth advanced high strength steels advanced high-strength steels (AHSS) as-cast condition atom probe tomography atomic force microscopy (AFM) austenite austenite stability austenite-to-ferrite transformation bainite bainitic ferrite carbon segregation coiling simulation cold-deformation constitutive model continuous casting defect reduction direct quenching