VOID FORMATION IN RAPIDLY-SOLIDIFIED METALS

被引：14

作者：

ADAMS, JB ^{[1
]}

WOLFER, WG ^{[1
]}

机构：

[1] SANDIA NATL LABS, LIVERMORE, CA 94550 USA

来源：

ACTA METALLURGICA ET MATERIALIA | 1993年 / 41卷 / 09期

关键词：

D O I：

10.1016/0956-7151(93)90131-B

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A dynamic nucleation code has been developed for predicting the evolution of vacancy clusters and nanometer-size voids in rapidly-quenched metals containing helium and oxygen impurities. Calculations have been carried out for typical quench rates and subsequent heat treatments of the powders during and after consolidation. These calculations show that high densities of submicroscopic voids can form in rapidly quenched metal powders, due to the quenched-in vacancy supersaturation and the entrapment of gases. The significance of these nanometer voids to the morphology or precipitates formed in rapidly-solidified steels is discussed.

引用

收藏

页码：2625 / 2632

页数：8

相关论文

共 15 条

[1] FORMATION ENERGIES OF HELIUM-VOID COMPLEXES IN NICKEL [J].

ADAMS, JB ;

WOLFER, WG .

JOURNAL OF NUCLEAR MATERIALS, 1989, 166 (03) :235-242

[2]

ADAMS JB, 1988, J NUCL MATER, V158, P25, DOI 10.1016/0022-3115(88)90150-X

[3] SUB-MICRON DEFECTS IN RAPIDLY SOLIDIFIED TYPE-304 STAINLESS-STEEL POWDERS CONTAINING NOBLE-GASES [J].

BAE, JC ;

KELLY, TF ;

FLINN, JE ;

WRIGHT, RN .

SCRIPTA METALLURGICA, 1988, 22 (05) :691-696

[4] VACANCY CONDENSATION AND ORIGIN OF DISLOCATIONS IN GROWTH FROM MELT [J].

BOLLING, GF ;

FAINSTEIN, D .

PHILOSOPHICAL MAGAZINE, 1972, 25 (01) :45-+

[5]

GOTO S, 1967, J JAPAN I MET, V31, P600

[6] MEASUREMENT OF INTERFACIAL FREE-ENERGIES AND ASSOCIATED TEMPERATURE COEFFICIENTS IN 304-STAINLESS STEEL [J].

MURR, LE ;

WONG, GI ;

HORYLEV, RJ .

ACTA METALLURGICA, 1973, 21 (05) :595-604

[7]

SIAHMED A, 1982, ASTM STP, V782, P1008

[8] THE VACANCY FORMATION ENTHALPY IN NI DETERMINED BY POSITRON-ANNIHILATION [J].

SMEDSKJAER, LC ;

FLUSS, MJ ;

LEGNINI, DG ;

CHASON, MK ;

SIEGEL, RW .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1981, 11 (11) :2221-2230

[9] NEW TECHNIQUE FOR MEASURING EFFECTS OF OXYGEN ACTIVITY ON SURFACE ENERGIES - APPLICATION TO NICKEL [J].

STICKLE, DR ;

HIRTH, JP ;

MEYRICK, G ;

SPEISER, R .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1976, 7 (01) :71-74

[10] VACANCY SUPERSATURATION IN RAPIDLY SOLIDIFIED METAL DROPLETS [J].

VANSICLEN, CD ;

WOLFER, WG .

PHYSICAL REVIEW A, 1991, 43 (10) :5344-5354