Mechanism of the formation of peripheral coarse grain structure in hot extrusion of Al-4.5Zn-1Mg

被引：22

作者：

Eivani, A. R. ^{[1
]}

Zhou, J. ^{[2
]}

Duszczyk, J. ^{[2
]}

机构：

[1] Iran Univ Sci & Technol, Sch Met & Mat Engn, Tehran, Iran

[2] Delft Univ Technol, Dept Biomechan Engn, Delft, Netherlands

来源：

PHILOSOPHICAL MAGAZINE | 2016年 / 96卷 / 12期

关键词：

Aluminium; extrusion; microstructure; peripheral coarse grain structure; 3D FEM SIMULATION; ALUMINUM-ALLOYS; CONTINUOUS RECRYSTALLIZATION; TRANSITION; EVOLUTION;

D O I：

10.1080/14786435.2016.1157637

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructural evolution leading to peripheral coarse grain (PCG) structure in hot extruded Al-4.5Zn-1Mg rods is investigated. The extent of dynamic recrystallization (DRX) in the as-extruded product falls not in line with the basis over which the existing mechanisms for interpretation of PCG formation are built. A new mechanism is therefore proposed based on partial DRX during extrusion and nucleation and abnormal growth of statically recrsystallised grains.

引用

页码：1188 / 1196

页数：9

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