Next Article in Journal
Comparison between Shot Peening, Cavitation Peening, and Laser Peening by Observation of Crack Initiation and Crack Growth in Stainless Steel
Previous Article in Journal
Austenitic Stainless Steel Powders with Increased Nitrogen Content for Laser Additive Manufacturing
Open AccessArticle

Dynamic Behaviors and Microstructure Evolution of Iron–Nickel Based Ultra-High Strength Steel by SHPB Testing

1
Beijing Institute of Technology, School of Mechanical Engineering, Beijing 100081, China
2
North China Institute of Aerospace Engineering, School of Mechanical and Electrical Engineering, Langfang 065000, China
3
Advanced Manufacturing Institute, King Saud University, Riyadh 11421, Saudi Arabia
4
Industrial Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(1), 62; https://doi.org/10.3390/met10010062
Received: 3 December 2019 / Revised: 16 December 2019 / Accepted: 22 December 2019 / Published: 31 December 2019
Iron–nickel based ultra-high strength steel (wt. 18~20% Ni) is characterized by its high strength and low thermal conductivity, and is normally used to make key components by forming and machining processes. The optimization of these processes is based on a deep understanding of the mechanical and dynamic behaviors under high strain, high strain rate, and high temperature. In this paper, the relationship of stress to strain, strain rate, and temperature is systematically investigated by the dynamic compression tests combined with quasi-static compression tests, and the hardening and softening is associated with the transformation in microstructures. According to the analysis, dynamic recrystallization around 600 °C is assumed to be one important influencing factor, hence hot deformation equations are established and the critical strain for dynamic recrystallization and the volume fraction of the dynamic recrystallized grains are defined. View Full-Text
Keywords: dynamic behavior; dynamic recrystallization; iron–nickel based ultra-high strength steel; microstructure; SHPB dynamic behavior; dynamic recrystallization; iron–nickel based ultra-high strength steel; microstructure; SHPB
Show Figures

Figure 1

MDPI and ACS Style

Fu, H.; Wang, X.; Xie, L.; Hu, X.; Umer, U.; Rehman, A.U.; Abidi, M.H.; Ragab, A.E. Dynamic Behaviors and Microstructure Evolution of Iron–Nickel Based Ultra-High Strength Steel by SHPB Testing. Metals 2020, 10, 62.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop