Phase Transformation Mechanism of Al-Zn System During High Pressure Torsion

被引：0

作者：

Chen C. ^{[1
,2
]}

Chen Y. ^{[3
]}

Su X. ^{[1
,2
]}

Lu J. ^{[1
,2
]}

Yu J. ^{[1
,2
]}

Zhang J. ^{[1
]}

Ji W. ^{[1
,2
]}

机构：

[1] Department of Mechanical Engineering, Jiangnan University, Jiangsu, Wuxi

[2] Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Jiangsu, Wuxi

[3] School of Materials Science & Engineering, Jiangsu University, Jiangsu, Zhenjiang

来源：

Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 09期

关键词：

Al-Zn alloy; high-pressure torsion; mechanical alloying; phase transformation;

D O I：

10.11896/cldb.22120148

中图分类号：

学科分类号：

摘要：

In this work, the mechanical alloying of the immiscible Al-Zn system at room temperature under high pressure torsion was studied. Mechanical alloying via high pressure torsion (HPT) was studied for the immiscible Al-Zn system at room temperature. Stacks of alternating 0.3 mm thick sheets of pure Al and Zn were subjected to HPT processing at a pressure of 3 GPa for 50 revolutions. The results show that two phase transformation occurred in the Al-Zn alloy after HPT process, the phase transformation from crystal to amorphous, and the phase transition from hexagonal close-packed to face-centered cubic. High local dislocation density may primarily accounted for the crystalline-to-amorphous transformation in Al-Zn alloy and the phase transformation is attributed to the sliding of Shockley partial dislocations generated at the Al-Zn grain boundaries. Moreover, this work provides a new approach for the in-depth study of the solid phase transformation of Al-Zn alloys. It may also shed lights on improving the mechanical properties of the HPT processed Al-Zn alloys. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

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