FORMATION OF L1-2 ORDERED PRECIPITATES AT ROOM-TEMPERATURE AND THEIR EFFECT ON THE MECHANICAL-PROPERTIES IN AL-LI ALLOYS

被引：16
作者：
LENDVAI, J
WUNDERLICH, W
GUDLADT, HJ
机构：
[1] MAX PLANCK INST IRON RES, W-4000 DUSSELDORF, GERMANY
[2] MAX PLANCK INST MET RES, INST WERKSTOFFWISSENSCH, W-7000 STUTTGART 80, GERMANY
来源：
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1993年 / 67卷 / 01期
关键词：
D O I：
10.1080/01418619308207145
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The early stages of formation of the L1(2) ordered delta'-phase are discussed on the basis of experimental results referring to room-temperature precipitation taking place in alloys quenched after solution treatment. The initial process is a fast continuous ordering followed by a considerably slower decomposition. Indications were found for a homogeneous nucleation process occurring in the congruently ordered matrix. The ordered nature of the delta' precipitates determines their effect on mechanical properties. Both the homogeneously ordered matrix and the ordered precipitates favour planar slip which appears already in as-quenched specimens.
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页码：99 / 107
页数：9
相关论文
共 26 条
[1]   PRECIPITATION HARDENING [J].
ARDELL, AJ .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (12) :2131-2165
[2]   EXPERIMENTAL-OBSERVATIONS ON THE NUCLEATION AND GROWTH OF DELTA' (AL3LI) IN DILUTE AL-LI ALLOYS [J].
BAUMANN, SF ;
WILLIAMS, DB .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (07) :1203-1211
[3]   THE FORMATION OF ORDERED DELTA-'-PHASE IN AL-LI ALLOYS BY DIFFUSE AND SMALL-ANGLE NEUTRON-SCATTERING [J].
BLASCHKO, O ;
GLAS, R ;
WEINZIERL, P .
ACTA METALLURGICA ET MATERIALIA, 1990, 38 (06) :1053-1062
[4]   ANNEALING OF VACANCIES AND AGING IN AL-LI ALLOYS [J].
CERESARA, S ;
GIARDA, A ;
SANCHEZ, A .
PHILOSOPHICAL MAGAZINE, 1977, 35 (01) :97-110
[5]   ARRANGEMENT OF DEFORMATION INDUCED DISLOCATIONS IN AGED AL-LI ALLOYS [J].
FURUKAWA, M ;
MIURA, Y ;
NEMOTO, M .
TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1985, 26 (04) :225-229
[6]   ON THE ORIGIN OF PLANAR SLIP IN FCC ALLOYS [J].
GEROLD, V ;
KARNTHALER, HP .
ACTA METALLURGICA, 1989, 37 (08) :2177-2183
[7]   PRECIPITATION STRENGTHENING AND ITS INFLUENCE ON THE MECHANICAL-BEHAVIOR OF CYCLICALLY DEFORMED AL-LI ALLOYS [J].
GUDLADT, HJ ;
LENDVAI, J ;
SCHNEIDER, J .
ACTA METALLURGICA, 1989, 37 (12) :3327-3333
[8]   PRECIPITATION STRENGTHENING OF BINARY AL-LI ALLOYS BY DELTA' PRECIPITATES [J].
HUANG, JC ;
ARDELL, AJ .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1988, 104 :149-156
[9]   THEORETICAL INVESTIGATION OF THE PRECIPITATION OF DELTA' IN AL-LI [J].
KHACHATURYAN, AG ;
LINDSEY, TF ;
MORRIS, JW .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1988, 19 (02) :249-258
[10]  
LACOM W, 1990, Z METALLKD, V81, P663
123