Body-centered-cubic to face-centered-cubic phase transformation of iron under compressive loading along [100] direction. (March 2021)

• Record Type: Journal Article
• Authors: Xie, Hongxian; Ma, Tong; Yu, Tao; Yin, Fuxing
• Is Part Of: Materials today communications. Volume 26(2021)
• Publication Date: 2021-03
• Subjects: Phase transformation -- Iron -- Elastic stability -- Molecular dynamics simulation; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2020.101961
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: Phase transformation of iron nanoplate and bulk under compressive loading along [100] direction is investigated by using the molecular dynamic simulation method. The simulation results show that the iron nanoplate undergoes body-centered-cubic to face-centered-cubic phase transformation; while iron bulk undergoes body-centered-cubic to hexagonal close-packed phase transformation. The two different phase transformation modes can be attributed to the free surface-induced stress effect of the nanoplate. By applying additional lateral stress, the iron bulk also transforms into face-centered-cubic phase. Moreover, the body-centered-cubic to face-centered-cubic phase transformation is further studied in term of elastic stability theory; it is found that the theoretical results are consistent with the simulation results very well. Therefore, it can be concluded that body-centered-cubic to face-centered-cubic phase transformation can be realized under both tensile and compressive loading along [100] direction.