Work

Adiabatic shear behavior of pearlitic heat-resistant steel under fragment-simulating projectile impact

Year: 2025

Type: article

Abstract: Adiabatic shear band (ASB), as the precursor to catastrophic material failure, is of great significance in the research of impact resistance. This study investigated the adiabatic shear behavior of 12Cr1MoV steel under high-velocity impact from fragment-simulating projectile (FSP) using high-speed impact tests, numerical simulations, and scanning electron microscopy. The results demonstrated that the flat and wedge-shaped segments of the FSP experience different stress conditions and temperature fields during penetration. The asymmetry of the projectile has a pronounced effect on the morphology of the ASB. Two major failure modes were identified during the penetration process: tensile failure and shear failure, with pearlite exhibiting strengthening effects under both loading conditions. The ASB developed distinct microstructural characteristics with increasing impact velocity, exhibiting apparent sensitivity to temperatures and strain rates. Finally, the investigation of the ASB branches revealed the mechanisms underlying ASB formation and the initiation of catastrophic cracking.

Source: Defence Technology

DOI: 10.1016/j.dt.2025.07.014

Authors: Kunxuan Wang, Yubo Gao, Wencai Sun, Wei Zheng, Wenbo Xie

Institutions: North University of China, Naval University of Engineering, PowerChina Kunming Engineering Corporation Limited (China)

Language: English

Topic: High-Velocity Impact and Material Behavior

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond

Funder: National Natural Science Foundation of China

Awards: G3046150467, G4820807335