COARSENING BEHAVIOR OF L12 PRECIPITATES IN MELT-SPUN AL-TI-V-ZR ALLOYS

被引：30

作者：

LEE, HS ^{[1
]}

HAN, SZ ^{[1
]}

LEE, HM ^{[1
]}

LEE, ZH ^{[1
]}

机构：

[1] KOREA ADV INST SCI & TECHNOL,DEPT MAT SCI & ENGN,TAEJON 305701,SOUTH KOREA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1993年 / 163卷 / 01期

关键词：

D O I：

10.1016/0921-5093(93)90581-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Aging studies of two melt-spun Al-2at.% (Ti,V,Zr) alloys showed that the would-be metastable L1(2) Al3(Ti,V,Zr) precipitates did not transform to stable D0(23) ones, and the average radius is 5-7 nm and the interparticle spacing is 20-40 nm at 698 K up to 400 h. The coarsening rate of spherical Al3(Ti0.2V0.4Zr0.4) precipitates was observed to be five times as fast as that of Al3(Ti0.1V0.4Zr0.5) precipitates. The coarsening behavior in both alloys obeyed the Lifshitz-Slyozov-Wagner (LSW) prediction well. Owing to the low coarsening rate and the high thermal stability of the precipitated phase, Al-Ti-V-Zr systems show promise as bases for high-temperature high-strength Al alloys.

引用

页码：81 / 90

页数：10

共 44 条

[1]

Adam C. M., 1982, Rapidly Solidified Amorphous and Crystalline Alloys. Proceedings of the Materials Research Society Annual Meeting, P411

[2] COARSENING OF GRAIN-BOUNDARY PRECIPITATES [J].

ARDELL, AJ .

ACTA METALLURGICA, 1972, 20 (04) :601-&

[3] COARSENING KINETICS OF SILICA IN COPPER [J].

BHATTACHARYYA, SK ;

RUSSELL, KC .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1976, 7 (03) :453-462

[4] DEPENDENCE OF OSTWALD RIPENING KINETICS ON PARTICLE-VOLUME FRACTION [J].

BRAILSFORD, AD ;

WYNBLATT, P .

ACTA METALLURGICA, 1979, 27 (03) :489-497

[5] RELATIVE STABILITY OF L12, DO22, AND DO23 STRUCTURES IN MA13 COMPOUNDS [J].

CARLSSON, AE ;

MESCHTER, PJ .

JOURNAL OF MATERIALS RESEARCH, 1989, 4 (05) :1060-1063

[6] RELATIVE STABILITIES OF LI-2 AND DO22 STRUCTURES IN TERNARY MAL3-BASE ALUMINIDES [J].

CARLSSON, AE ;

MESCHTER, PJ .

JOURNAL OF MATERIALS RESEARCH, 1990, 5 (12) :2813-2818

[7] COARSENING BEHAVIOR OF LL2 STRUCTURED AL3 (ZRXV1-X) PRECIPITATES IN RAPIDLY SOLIDIFIED AL-ZR-V ALLOY [J].

CHEN, YC ;

FINE, ME ;

WEERTMAN, JR ;

LEWIS, RE .

SCRIPTA METALLURGICA, 1987, 21 (07) :1003-1008

[8] MICROSTUCTURAL EVOLUTION AND MECHANICAL-PROPERTIES OF RAPIDLY SOLIDIFIED AL-ZR-V ALLOYS AT HIGH-TEMPERATURES [J].

CHEN, YC ;

FINE, ME ;

WEERTMAN, JR .

ACTA METALLURGICA ET MATERIALIA, 1990, 38 (05) :771-780

[9]

CHEN YC, 1991, P ME FINE S TMS WARR, P237

[10] PROCESSING AN AL/AL3ZR0.25TI0.75 METAL-MATRIX COMPOSITE BY CONVENTIONAL MELTING, CASTING AND ROLLING [J].

EARVOLINO, PA ;

FINE, ME ;

WEERTMAN, JR ;

PARAMESWARAN, VR .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 26 (06) :945-948

← 1 2 3 4 5 →