首页|Effect of Tip Content on the Work Hardening and Softening Behavior of Mg-Zn-Ca Alloy

Effect of Tip Content on the Work Hardening and Softening Behavior of Mg-Zn-Ca Alloy

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The Tip/ZX60 composites with different Tip contents were prepared by semi-solid stirring casting.After extrusion,the microstructure,work hardening and softening behavior of the Tip/ZX60 composites were analyzed compared with the ZX60(Mg-6Zn-0.2Ca)alloy.The results showed that the addition of Tip could not only promote the nucleation of dynamic recrystallized(DRXed)grains,but also be propitious to the refinement of DRXed grains.With increasing Tip content,the size of DRXed grains decreased accompanied with increasing volume fraction of DRXed grains.As the Tip content increased to 15 vol.％,the average size and volume fraction of DRXed grains reached to～0.32 μm and 93.2％,respectively.Besides,both the strength and elongation were improved by the addition of Tip.With increasing content of Tip,a substantial increase in the strength was achieved with little change in the elongation.However,the elongation decreased sharply when the Tip content further increased to 15 vol.％.The addition of Tip led to an increase in the work hardening rate,which gradually increased with increasing Tip content.However,the softening rate did not demonstrate the same tendency with increasing Tip content.Unlike the conventional ceramic particles,the Tip can be deformed in coordination with the matrix alloy,which imparted a higher softening rate to the matrix alloy.Even though the softening rate improved as the Tip content increased from 5 to 10 vol.％,it dropped deeply as the Tip content increased to 15 vol.％owing to the fracture of Tip during extrusion.

Titanium particle contentParticle reinforced magnesium matrix compositesWork hardeningSoftening behaviorMechanical properties

Jin-Kai Zhang、Cui-Ju Wang、Yi-Dan Fan、Chao Xu、Kai-Bo Nie、Kun-Kun Deng

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Shanxi Key Laboratory of Advanced Magnesium-Based Materials,College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of Chinathe"the National Key Research and Development Program for Young Scientists"Special Fund Project for Guiding Local Science and Technology Development by the Central Government

52271109520012232021YFB3703300YDZJSX2021B019

2024

10.1007/s40195-023-01557-0

金属学报(英文版)
中国金属学会

金属学报(英文版)

CSTPCD
影响因子：0.77
ISSN：1006-7191
年,卷(期)：2024.37(3)
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