Effect of Bimodal Quasicrystal Phase on the Dynamic Recrystallization of Mg-Zn-Gd Alloy during High-Pressure Torsion

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外文摘要：The Mg-Zn-Gd alloy with quasicrystal icosahedral phase was processed by high-pressure torsion(HPT).The effect of bimodal I-phase on the dynamic recrystallization was analyzed by transmission electron microscopy.The results showed that the block I-phase can stimulate obvious particle-stimulated nucleation and dynamic recrystallization(DRX)grains were preferentially formed after HPT for 5 turns,while the granular I-phase only promoted the generation of sub-grains.The ori-entation relationship was determined as twofold//[1210]and fivefold//(0002)Mg.Moreover,after HPT for 9 turns,the DRX grains induced by block I-phase appeared to grow up and coarsened.Compared with block I-phase,the grains induced by granular I-phase presented much smaller size and distributed more homogeneous due to the strong pinning effect.

外文关键词：

High-pressure torsion(HPT)Quasicrystal phaseDynamic recrystallizationParticle-stimulated nucleationOrientation relationship

作者：

Ping Li、Shuangwu Xia、Junfu Dong、Liangwei Dai、Zhicheng Luo、Kemin Xue

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作者单位：

School of Material Science and Engineering,Hefei University of Technology,Hefei 230009,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaProjects of Natural Science Key Research of Anhui Province

项目编号：

51975175523753292023AH051664

出版年：

2024

DOI：

10.1007/s40195-024-01687-z

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(7)