Irradiated CL-20 Crystal
Gas-Pressurization Strengthening
Elucidates how irradiation defects govern the mechanical behavior of CL-20, providing an atomistic basis for irradiation-tolerant safety design of energetic materials.
Weiyi, Li · Tao, Wang · Rong, Liu · Xiyao, Yun · Guo, Wanxiao · Yilin, Fang · Wang, Jintao · Gao, Ning
Defence Technology 2026
Specifications
- Void internal pressure
- {'zh': '2', 'en': '2'} GPa
- Maximum irradiation dose
- {'zh': '1760', 'en': '1760'} kGy
Advantages
Hardening mechanism identified
Irradiation-generated gases form high-pressure voids that impose a prestress on the surrounding lattice, causing anomalous hardening.
Hot-spot precursor revealed
The gas-phase defect structure induces a local viscoplastic temperature rise under loading, acting as a high-risk precursor site for hot spot formation.
Applications
- Aerospace Energetic Materials：To assess mechanical performance and safety of aerospace energetic materials under radiation, guiding radiation-tolerant design.
- Hypersonic Propulsion：Provides atomic-scale criteria for structural integrity of hypersonic propellants under radiation and extreme mechanical loads.
- Explosion Mechanics：Reveals irradiation defects as hot-spot precursors, informing explosive response and safety analysis.
- Radiation Shielding Materials：Provides atomic-level predictions of irradiation degradation and damage tolerance for energetic components in shielding structures.