Al-Zn体系高压扭转过程中的相变机理

doi:10.11896/cldb.22120148

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Abstract 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.

Key words： high-pressure torsion mechanical alloying phase transformation Al-Zn alloy

Published: 10 May 2024 Online: 2024-05-13

CLC number:

TH142.3

Fund:Technological Innovation Project of Shandong Province (2019JZZY020111).

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	Articles by authors
	CHEN Chen
	CHEN Yulin
	SU Xuan
	LU Jingyu
	YU Junjie
	ZHANG Jian
	JI Weixi

Cite this article:

CHEN Chen,CHEN Yulin,SU Xuan, et al. Phase Transformation Mechanism of Al-Zn System During High Pressure Torsion[J]. Materials Reports, 2024, 38(9): 22120148-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22120148 OR http://www.mater-rep.com/EN/Y2024/V38/I9/22120148

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