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A Stress-Induced Martensitic Transformation in Aged Ti49Ni51 Alloy after High-Velocity Impact
Yingying Zhu1, Haizhen Wang2, Zhiyong Gao3
1Science and Technology on Materials Performance Evaluation in Space Environment Laboratory, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China. zhuyingying841225@163.com.
Abstract:
The effects of a high-velocity impact on the microstructure, phase transformation and mechanical property of aged Ti49Ni51 alloy are investigated. The transformation behavior and microstructure along the impact direction after impact emerge with regionalization characteristics, including a deformed region near the crater (0-4 mm) and an un-deformed region of the distal crater (5-6 mm). Stress-induced martensite is the main deformation mechanism in the deforming region of aged Ti49Ni51 alloy under high-velocity impact.
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