Through-Thickness Microstructures and Yield Strength Enhancement for AZ31 Mg Sheets Treated by Ultrasonic Nanocrystal Surface Modification
초음파 미세 표면 냉간단조법(UNSM)을 적용한 AZ31 마그네슘 판재의 단면 미세조직 및 강도 향상 효과 분석
Myungsung Kang, Joo-Hee Kang, Hyeonuk Park, Jun-Hyung Kim, Young-Sik Pyoun, Minjae Baek, Dong Jun Lee, Seung Jin Lee, Sanghu Park, Hong Moule Kim, Sung Hyuk Park, Yoon Suk Choi강명성, 강주희, 박현욱, 김준형, 편영식, 백민재, 이동준, 이승진, 박상후, 김홍물, 박성혁, 최윤석
Korean J. Met. Mater.
2022;60(3):169-179. Published online 2022 Feb 8
An ultrasonic nanocrystal surface modification (UNSM) technique was applied to a 1-mm thick AZ31 magnesium sheet. UNSM is a relatively new surface modification technique in which a hard, hemispherical tip (2.38 mm in diameter) strikes the surface at an ultrasonic frequency to induce plastically deformed gradient microstructures and deep compressive..... More