Superplastic deformation mechanisms in fine-grained Al-Mg based alloys

被引：51

作者：

Mikhaylovskaya, A. V. ^{[1
]}

Yakovtseva, O. A. ^{[1
]}

Golovin, I. S. ^{[1
]}

Pozdniakov, A. V. ^{[1
]}

Portnoy, V. K. ^{[1
]}

机构：

[1] Natl Univ Sci & Technol MISIS, Dept Phys Met Nonferrous Met, Moscow 117936, Russia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 627卷

关键词：

Aluminium alloys; Superplasticity; Electron microscopy; Mechanical characterisation; Dislocation structure; Grain boundary sliding; HIGH-RESOLUTION SURFACE; DYNAMIC RECRYSTALLIZATION; 2-STAGE DEFORMATION; DIFFUSION CREEP; LEAD-TIN; BOUNDARY; SHEAR; SIZE; FLOW; MN;

D O I：

10.1016/j.msea.2014.12.099

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The superplastic deformation behaviour at elevated temperatures and constant strain rates of two fine-grained AA5083 type aluminium alloys was investigated. The first alloy with chromium contains Al-6(Mn, Cr) particles and the second alloy without chromium has Al6Mn particles. The effective activation energy of superplastic deformation and the activation parameters for the grain boundary relaxation was calculated. The microstructure evolution and contributions of grain boundary sliding, intragranular deformation and diffusion creep to total superplastic deformation were studied by SEM, EBSD, FIB, TEM techniques. Low values of grain boundary sliding and permanent continuous formation of sub-grain boundaries were found in both alloys. Significant dynamic grain growth during superplastic deformation and large value of intragranular deformation were found in the alloy without chromium. Intragranular deformation is not significant and the superplasticity is primarily a result of diffusion creep in the chromium containing alloy with Al-6(Mn,Cr) particles. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：31 / 41

页数：11

共 50 条

[1] Deformation and reconstruction mechanisms in coarse-grained superplastic Al-Mg alloys
Soer, W. A.
Chezan, A. R.
De Hosson, J. Th. M.
ACTA MATERIALIA, 2006, 54 (14) : 3827 - 3833
[2] Superplastic Deformation Mechanisms in Fine-Grained 2050 Al-Cu-Li Alloys
Li, Hongping
Liu, Xiaodong
Sun, Quan
Ye, Lingying
Zhang, Xinming
MATERIALS, 2020, 13 (12) : 1 - 12
[3] Deformation mechanisms in fine-grained Ti-Al alloys
Morris, MA
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 224 (1-2): : 12 - 20
[4] Deformation mechanisms in fine-grained Ti-Al alloys
Univ of Neuchatel, Neuchatel, Switzerland
Mater Sci Eng A Struct Mater Prop Microstruct Process, 1600, 1-2 (12-20):
[5] Superplastic deformation mechanisms of a fine-grained Al-Cu-Li alloy
Liu, Xiaodong
Ye, Lingying
Tang, Jianguo
Ke, Bin
Dong, Yu
Chen, Xiaojiao
Gu, Yi
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 848
[6] Comparison of grain boundary sliding in fine grained Mg and Al alloys during superplastic deformation
Wang, YN
Huang, JC
SCRIPTA MATERIALIA, 2003, 48 (08) : 1117 - 1122
[7] Superplastic Behavior of Fine-Grained Al-Mg-Li Alloy
G. F. Korznikova
G. R. Khalikova
S. Yu. Mironov
A. F. Aletdinov
E. A. Korznikova
T. N. Konkova
M. M. Myshlyaev
Physical Mesomechanics, 2022, 25 : 318 - 325
[8] Superplastic Behavior of Fine-Grained Al-Mg-Li Alloy
Korznikova, G. F.
Khalikova, G. R.
Mironov, S. Yu
Aletdinov, A. F.
Korznikova, E. A.
Konkova, T. N.
Myshlyaev, M. M.
PHYSICAL MESOMECHANICS, 2022, 25 (04) : 318 - 325
[9] The texture of ultra-fine grained Al-Mg alloys
Gholinia, A
Humphreys, FJ
Prangnell, PB
TEXTURES OF MATERIALS, PTS 1 AND 2, 2002, 408-4 : 1519 - 1524
[10] INFLUENCE OF FINE-GRAINED STRUCTURE AND SUPERPLASTIC DEFORMATION ON THE STRENGTH OF ALUMINUM-ALLOYS .1. THE PHENOMENOLOGY OF THE INFLUENCE OF FINE-GRAINED STRUCTURE AND SUPERPLASTIC DEFORMATION ON THE STRENGTH OF ALUMINUM-ALLOYS
RABINOVICH, MK
MARKUSHEV, MV
JOURNAL OF MATERIALS SCIENCE, 1995, 30 (18) : 4692 - 4702

← 1 2 3 4 5 →