DENDRITIC SOLIDIFICATION IN BINARY-ALLOYS

被引：100

作者：

CHOPRA, MA

GLICKSMAN, ME

SINGH, NB

机构：

[1] NASA,LEWIS RES CTR,CLEVELAND,OH 44135

[2] RENSSELAER POLYTECH INST,TROY,NY 12181

[3] WESTINGHOUSE ELECT CORP,CTR RES & DEV,DEPT CRYSTAL GROWTH & SUPERCONDUCTOR,PITTSBURGH,PA 15235

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1988年 / 19卷 / 12期

关键词：

Metallography--Phase Diagrams;

D O I：

10.1007/BF02647736

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alloys generally solidify dendritically. Associated with it is the microsegregation of impurities. Pure metals also solidify in dendritic form as thermal dendrites which actually segregate the system's enthalpy. In this investigation, small additions of solute to succinonitrile have been studied and dendritic growth observed in a supercooled melt. This free dendritic growth-mode is similar to that experienced by equiaxed dendrites found in alloy castings. Observations of these free dendrites include measurement of velocity and tip radius of the dendrites at different supercoolings and solute concentrations.

引用

页码：3087 / 3096

页数：10

共 18 条

[1] MICROSEGREGATION IN RAPIDLY SOLIDIFIED AG-15WT-PERCENT-CU ALLOYS [J].

BOETTINGER, WJ ;

BENDERSKY, LA ;

CORIELL, SR ;

SCHAEFER, RJ ;

BIANCANIELLO, FS .

JOURNAL OF CRYSTAL GROWTH, 1987, 80 (01) :17-25

[2]

CHOPRA M, 1983, THESIS RENSSELAER PO

[3]

CHOPRA MA, IN PRESS J CRYST GRO

[4]

Glicksman M. E., 1982, Materials Processing in the Reduced Gravity Environment of Space. Proceedings of the Materials Research Society Annual Meeting, P461

[5] DENDRITIC GROWTH - TEST OF THEORY [J].