Dispersion of the Structure in Al-based Alloys by Different Methods of Severe Plastic Deformation

被引：5

作者：

Brodova, I. ^{[1
]}

Shirinkina, I. ^{[1
]}

Petrova, A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620990, Russia

来源：

NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2 | 2011年 / 667-669卷

关键词：

Severe plastic deformation; high deformation rate; high pressure; ultrafinegrained structure; nanostructure;

D O I：

10.4028/www.scientific.net/MSF.667-669.517

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structural and phase transformations in V95 (type of A7075) alloy upon high pressure torsion (HPT) up to high strain and upon dynamic channel angular pressing (DCAP) were studied using electron microscopy (TEM, SEM) and x-rays diffraction. It was established that the nanostructure with average grain size of 80-55 nm and hardness value of 2.5 GPa is formed by HPT at strain of e=5.5-6.4. It was shown the hardening metastable phase MgZn2 precipitates from supersaturated alpha-solid solution during dynamic deformation aging; its quantity grows with increasing of strain. Ultra fine grained structure with high- angle boundaries is formed in V95 alloy after already 2 cycles of DCAP. The average grain size is 200 nm in DCAP samples.

引用

页码：517 / 521

页数：5

共 8 条

[1] Structure features of bulk submicrocrystalline aluminum alloys at high-rate deformation [J].

Brodova I.G. ;

Shirinkina I.G. ;

Yablonskikh T.I. ;

Astaf'ev V.V. ;

Shorokhov E.V. ;

Zhgilev I.N. .

Bulletin of the Russian Academy of Sciences: Physics, 2009, 73 (9) :1257-1261

[2] Formation of a submicrocrystalline structure upon dynamic deformation of aluminum alloys [J].

Brodova, I. G. ;

Shirinkina, I. G. ;

Antonova, O. A. ;

Shorokhov, E. V. ;

Zhgilev, I. I. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 503 (1-2) :103-105

[3]

Khomskaya I. V., 2008, FIZ MET METALLOVED, V105, P621

[4]

Segal VM, 1981, RUSS METALL+, V1, P115

[5]

Shorohov E.V., 2006, [No title captured], Patent No. 2283717

[6] Dynamic pressing of titanium for producing an ultrafine-grained structure [J].

Shorokhov, E. V. ;

Zhgilev, I. N. ;

Gunderov, D. V. ;

Gurov, A. A. .

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B, 2008, 2 (02) :251-254

[7] Bulk nanostructured materials from severe plastic deformation [J].

Valiev, RZ ;

Islamgaliev, RK ;

Alexandrov, IV .

PROGRESS IN MATERIALS SCIENCE, 2000, 45 (02) :103-189

[8]

Zeldovich V. I., 2008, FIZ MET METALLOVED, V105, P431

← 1 →