Characteristics of submicron grained structure formed in aluminum by equal channel angular extrusion

被引：63
作者：
Sun, PL [1 ]
Kao, PW [1 ]
Chang, CP [1 ]
机构：
[1] Natl Sun Yat Sen Univ, Inst Mat Sci & Engn, Kaohsiung 80424, Taiwan
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2000年 / 283卷 / 1-2期
关键词：
aluminum; equal channel angular extrusion; submicron grained structure; plastic deformation;
D O I：
10.1016/S0921-5093(99)00800-X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work has shown that submicron grained (similar to 0.35 mu m) structure can be formed by applying equal channel angular extrusion (ECAE) to epsilon=8 at room temperature. Tn addition, the resulted submicron grained structure is characterized by a random microtexture. Based on the observation, it is suggested that grain subdivision and texture evolution, as well as local boundary migration are the possible mechanisms involved in the formation of submicron grains during severe plastic deformation. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：82 / 85
页数：4
相关论文
共 14 条
[1]   OVERVIEW NO-96 - EVOLUTION OF FCC DEFORMATION STRUCTURES IN POLYSLIP [J].
BAY, B ;
HANSEN, N ;
HUGHES, DA ;
KUHLMANNWILSDORF, D .
ACTA METALLURGICA ET MATERIALIA, 1992, 40 (02) :205-219
[2]   MICROSTRUCTURAL EVOLUTION IN ROLLED ALUMINUM [J].
BAY, B ;
HANSEN, N ;
KUHLMANNWILSDORF, D .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 158 (02) :139-146
[3]   New grain formation during warm deformation of ferritic stainless steel [J].
Belyakov, A ;
Kaibyshev, R ;
Sakai, T .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1998, 29 (01) :161-167
[4]   ROOM-TEMPERATURE RECRYSTALLIZATION OF 99.999 PCT ALUMINUM [J].
CHOI, CH ;
JEONG, JH ;
OH, CS ;
LEE, DN .
SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (03) :325-330
[5]   Microstructure and properties of copper and aluminum alloy 3003 heavily worked by equal channel angular extrusion [J].
Ferrasse, S ;
Segal, VM ;
Hartwig, KT ;
Goforth, RE .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (04) :1047-1057
[6]   The shearing characteristics associated with equal-channel angular pressing [J].
Furukawa, M ;
Iwahashi, Y ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 257 (02) :328-332
[7]   INVESTIGATION OF THE RECRYSTALLIZATION OF LOW-TEMPERATURE DEFORMED HIGHLY PURE TYPES OF ALUMINUM [J].
HAESSNER, F ;
SCHMIDT, J .
ACTA METALLURGICA ET MATERIALIA, 1993, 41 (06) :1739-1749
[8]   High angle boundaries formed by grain subdivision mechanisms [J].
Hughes, DA ;
Hansen, N .
ACTA MATERIALIA, 1997, 45 (09) :3871-3886
[9]   The process of grain refinement in equal-channel angular pressing [J].
Iwahashi, Y ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
ACTA MATERIALIA, 1998, 46 (09) :3317-3331
[10]   Principle of equal-channel angular pressing for the processing of ultra-fine grained materials [J].
Iwahashi, Y ;
Wang, JT ;
Horita, Z ;
Nemoto, M ;
Langdon, TG .
SCRIPTA MATERIALIA, 1996, 35 (02) :143-146
12