The influence of Al3Zr dispersoids on the recrystallization of hot-deformed AA 7010 alloys

被引：104

作者：

Morere, B ^{[1
]}

Maurice, C

Shahani, R

Driver, J

机构：

[1] Pechiney Ctr Rech Voreppe, F-38341 Voreppe, France

[2] Ecole Natl Super Mines, Microstruct & Proc Dept, F-42023 St Etienne, France

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2001年 / 32卷 / 03期

关键词：

D O I：

10.1007/s11661-001-0079-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The recrystallization of AA 7010 alloys (Al-6 pet Zn-2.4 pet Mg-1.6 pet Cu-Zr) during solution treatment is investigated as a function of Zr content after deformation under conditions simulating hot rolling. The respective roles of the volume fraction and size of Al3Zr dispersoids are characterized by additions of 0.05 to 0.12 pet Zr and suitable heat treatments. Plane strain compression (channel-die) tests at temperatures of 320 degreesC and 440 degreesC were conducted to strains of 1, and the samples subsequently solution-annealed at 470 degreesC. Recrystallization during this anneal was characterized by optical and electron microscopy and X-ray diffraction. The fraction recrystallized decreases with increasing Zr content, higher deformation temperature, and finer particle size. An original model based on the concept of the recrystallizable volume fraction is presented to predict the degree of recrystallization in materials characterized by spatially heterogeneous microstructures.

引用

页码：625 / 632

页数：8

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