CALORIMETRIC STUDY ON PRECIPITATION PATH IN 2024-ALLOY AND ITS SIC COMPOSITE

被引：70

作者：

BADINI, C

MARINO, F

VERNE, E

机构：

[1] Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, 10129 Torino

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 191卷 / 1-2期

关键词：

ALLOYS; COMPOSITES; PRECIPITATION; SILICON; CARBON;

D O I：

10.1016/0921-5093(94)09637-C

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Differential scanning calorimetry (DSC) is used in order to investigate the aging behaviour of Al-Cu-Mg alloys with different Cu:Mg ratios. Mechanism and kinetics of aging for these materials are compared with those of an (Al-Cu-Mg)-SiC composite. DSC results are in fairly good agreement with metastable Al-Cu and Al-Cu-Mg phase diagrams. The SiC reinforcement does not affect the precipitation path; furthermore, the activation energy for theta'' precipitation, calculated by Ozawa's method, is not appreciably different, taking into account the experimental error, for unreinforced alloy and composite. However, all the transformations involved in the aging sequence are shifted towards lower temperatures during the DSC scans of the composite material.

引用

页码：185 / 191

页数：7

共 30 条

[1]

ABIS S, 1988, Z METALLKD, V79, P202

[2] CALORIMETRIC STUDIES OF 7000 SERIES ALUMINUM-ALLOYS .2. COMPARISON OF 7075, 7050, AND RX720 ALLOYS [J].

ADLER, PN ;

DEIASI, R .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (07) :1185-1190

[3] AN EVALUATION OF AA-7012 MICROSTRUCTURE BY DIFFERENTIAL SCANNING CALORIMETRY [J].

ANTONIONE, C ;

MARINO, F ;

RIONTINO, G ;

ABIS, S ;

DIRUSSO, E .

MATERIALS CHEMISTRY AND PHYSICS, 1988, 20 (01) :13-25

[4] 6061-ALUMINUM ALLOY-SIC PARTICULATE COMPOSITE - A COMPARISON BETWEEN AGING BEHAVIOR IN T4 AND T6 TREATMENTS [J].

APPENDINO, P ;

BADINI, C ;

MARINO, F ;

TOMASI, A .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 135 :275-279

[5] THE STRUCTURE OF GPI ZONES IN AL-1.7 AT PERCENT CU [J].

AUVRAY, X ;

GEORGOPOULOS, P ;

COHEN, JB .

ACTA METALLURGICA, 1981, 29 (06) :1061-1075

[6] DSC STUDY OF AGING SEQUENCE IN 6061 ALUMINUM ALLOY-SIC WHISKERS COMPOSITE [J].

BADINI, C ;

MARINO, F ;

TOMASI, A .

MATERIALS CHEMISTRY AND PHYSICS, 1990, 25 (01) :57-70

[7]

BROOKS CR, 1982, HEAT TREATMENT STRUC, P121

[8] MICROSTRUCTURAL DEVELOPMENT IN AN ALUMINUM ALLOY-SIC WHISKER COMPOSITE [J].

CHRISTMAN, T ;

SURESH, S .

ACTA METALLURGICA, 1988, 36 (07) :1691-1704

[9]

CONSERVA M, 1970, ALLUM NUOVA METALL, V19, P515

[10] INFLUENCE OF DISLOCATION DENSITY AND DISTRIBUTION ON THE AGING BEHAVIOR OF 6061 AL-SICW COMPOSITES [J].

DUTTA, I ;

BOURELL, DL .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (11) :2041-2049

← 1 2 3 →