COARSENING AND MICROSEGREGATION DURING SOLIDIFICATION OF NI-AL-CR DENDRITIC MONO-CRYSTALS

被引：10

作者：

MONTOYACRUZ, JJ

KADALBAL, R

KATTAMIS, TZ

GIAMEI, AF

机构：

[1] UNIV CONNECTICUT,DEPT MET,HARTFORD,CT 06112

[2] UNITED TECHNOL RES CTR,E HARTFORD,CT 06108

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1982年 / 13卷 / 07期

关键词：

D O I：

10.1007/BF02645496

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dendritic monocrystals of nickel-rich Ni-Al-Cr alloys were directionally solidified at rates ranging from 0. 05 to 2. 00 m per hour, under gradients of 8 multiplied by 10**3 and 20 multiplied by 10**3 K per meter. If growth is cellular dendritic, the spacing exhibits the same dependence on growth rate or local cooling rate as does the secondary dendrite arm spacing in columnar dendrites. An increase in chromium or aluminum concentrations slowed down coarsening. The homogenization kinetics of aluminum and chromium are established analytically and experimentally.

引用

页码：1153 / 1159

页数：7

共 7 条

[1]

BRODY HD, 1966, T METALL SOC AIME, V236, P615

[2] SOLUTE REDISTRIBUTION DURING AND AFTER SOLIDIFICATION OF NI-AL-TA DENDRITIC MONOCRYSTALS [J].

KADALBAL, R ;

MONTOYACRUZ, JJ ;

KATTAMIS, TZ .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1980, 11 (09) :1547-1553

[3]

KATTAMIS TZ, 1967, T METALL SOC AIME, V239, P1504

[4] NOVEL METHOD FOR ESTABLISHMENT OF SOLVUS SURFACES AS DEMONSTRATED WITH NICKEL-BASE ALLOYS [J].

KATTAMIS, TZ ;

LECOMTE, JC .

JOURNAL OF MATERIALS SCIENCE, 1978, 13 (12) :2731-2736

[5]

MERZ GD, 1979, J MATER SCI, V14, P663

[6] COARSENING KINETICS DURING SOLIDIFICATION OF NI-AL-TA DENDRITIC MONOCRYSTALS [J].

PETERSON, PW ;

KATTAMIS, TZ ;

GIAMEI, AF .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1980, 11 (06) :1059-1065

[7]

Smithells C. I., 1976, METALS REFERENCE BOO

← 1 →