Influence of banded ε-martensite and deformation twin on cryogenic toughness of Fe–Mn–xAl–C steel

• Main Authors: Li, Leilei, Niu, Gang, Gong, Na, Liu, Hongfei, Wang, Xuelin, Shang, Chengjia, Wang, Yong, Wu, Huibin
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2024
• Subjects: Engineering; Cryogenic toughness; Deformation twin
• Online Access: https://hdl.handle.net/10356/173921
• Institution: Nanyang Technological University

Fe–Mn–xAl–C steel ingots have been fabricated by vacuum melting with Al compositions varied from x = 0 to 3 and 5 wt.%, respectively. After properly hot-forging and hot-rolling as well as solution heat treatments, impact toughness tests were carried out at 77 K using a standard full-size of Charpy i...