CONSOLIDATION MECHANISM OF ALUMINUM-BASED AMORPHOUS ALLOY POWDERS DURING WARM EXTRUSION

被引：22

作者：

KAWAMURA, Y

INOUE, A

SASAMORI, K

MASUMOTO, T

机构：

[1] Institute for Materials Research, Tohoku University, Sendai

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 181卷 / pt 2期

关键词：

Aluminum compounds - Deformation - Extrusion - Mechanical properties - Powder metallurgy;

D O I：

10.1016/0921-5093(94)90826-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al85Ni10Mm5 (M = mischmetal) amorphous compacts with full density were produced by warm extrusion of an ordinary billet. The extrusion conditions for the ordinary billet were found to be appropriate in the case of reduction ratios of 55%-60% for the cross-sectional area, extrusion temperatures of 383-443 K and extrusion speeds (ram speeds) of 1.0-2.5 mm s-1. The effects of these extrusion conditions on the density, powder particle bonding and structure of the extruded compacts have been discussed in terms of the pressure, shear deformation, stretch deformation, heat generation and the ratio of pressure to the flow stress of the alloy.

引用

页码：1174 / 1178

页数：5

共 14 条

[1] EXPLOSIVE FABRICATION OF RAPIDLY QUENCHED MATERIALS [J].

CLINE, CF ;

HOPPER, RW .

SCRIPTA METALLURGICA, 1977, 11 (12) :1137-1138

[2] HOT-ISOSTATIC PRESSING DIAGRAMS - NEW DEVELOPMENTS [J].

HELLE, AS ;

EASTERLING, KE ;

ASHBY, MF .

ACTA METALLURGICA, 1985, 33 (12) :2163-2174

[3] ALUMINUM-BASED AMORPHOUS-ALLOYS WITH TENSILE-STRENGTH ABOVE 980 MPA (100 KG MM2) [J].

INOUE, A ;

OHTERA, K ;

TSAI, AP ;

MASUMOTO, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (04) :L479-L482

[4]

JOHNSON W, 1956, J I MET, V85, P403

[5] PREPARATION OF BULK AMORPHOUS-ALLOYS BY HIGH-TEMPERATURE SINTERING UNDER A HIGH-PRESSURE [J].

KAWAMURA, Y ;

TAKAGI, M ;

SENOO, M ;

IMURA, T .

MATERIALS SCIENCE AND ENGINEERING, 1988, 98 :415-418

[6] CONSOLIDATION OF AL85NI10MM5(MM-MISCHMETAL) AMORPHOUS POWDERS BY WARM EXTRUSION [J].

KAWAMURA, Y ;

INOUE, A ;

MASUMOTO, T .

JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1993, 57 (07) :804-812

[7] MECHANICAL-PROPERTIES OF AMORPHOUS ALLOY COMPACTS PREPARED BY A CLOSED PROCESSING SYSTEM [J].

KAWAMURA, Y ;

INOUE, A ;

MASUMOTO, T .

SCRIPTA METALLURGICA ET MATERIALIA, 1993, 29 (01) :25-30

[8]

KAWAMURA Y, 1993, THESIS TU SENDAI

[9]

KAWAMURA Y, 1988, MATER SCI ENG, V98, P948

[10] COMPACTION AND MECHANICAL-PROPERTIES OF METALLIC-GLASS [J].

MORRIS, DG .

METAL SCIENCE, 1980, 14 (06) :215-220

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