Recent Research Progress on Fatigue Behavior of Twinning Induced Plasticity Steels

Author of the article:LIU Shuai, LIU Huanyou, CHEN Lin, GENG Yifan, FENG Yunli

Author's Workplace：School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, China

Key Words：twinning-induced plasticity steel; high cycle fatigue; low cycle fatigue; fatigue crack growth

Abstract：Twin induced plasticity (TWIP) steels have high strength and superior plasticity and have been used in automotive parts. In the process of vehicle running, these parts will be subjected to alternating loads, there is a risk of fatigue fracture. In recent years, researchers have paid more and more attention to the study of fatigue behavior of TWIP steel, hoping to further improve the fatigue resistance of TWIP steel by understanding the microstructure evolution of TWIP steel during fatigue process, the mode of crack propagation and the factors affecting fatigue life. The recent research results of fatigue behavior of TWIP steel were summarized from three aspects of high cycle fatigue, low cycle fatigue and fatigue crack propagation, and the microstructure evolution and strengthening mode behind each fatigue behavior were summarized and analyzed.