Acoustic Birefringence Changes in the Base Metal and Heat Affected Zone of ASTM 1020 Steel under Plastic Deformation and FatigueAlexander Gonchar, Vyacheslav Klyushnikov and Vasily MishakinE3S Web Conf., 398 (2023) 01044DOI: https://doi.org/10.1051/e3sconf/202339801044