A 2-D nucleation-growth model of spheroidal graphite

被引：21

作者：

Lacaze, Jacques ^{[1
]}

Bourdie, Jacques ^{[1
,2
]}

Jesus Castro-Roman, Manuel ^{[3
]}

机构：

[1] Univ Toulouse, CIRIMAT, ENSIACET, CS 44352, F-31030 Toulouse 4, France

[2] St Gobain Pont A Mousson, Les Longues Raies, BP 109, F-54704 Pont A Mousson, France

[3] CINVESTAV Saltillo, Av Ind Met 1062,Parque Ind Saltillo Ramos Arizpe, Ramos Arizpe 25900, Coahuila, Mexico

来源：

ACTA MATERIALIA | 2017年 / 134卷

关键词：

Spheroidal graphite; Cast iron; 2-D nucleation; Lateral growth; CAST IRONS; PRECIPITATE PLATES; KINETICS; SOLIDIFICATION; SILICON; ENERGY; CARBON;

D O I：

10.1016/j.actamat.2017.05.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Analysis of recent experimental investigations, in particular by transmission electron microscopy, suggests spheroidal graphite grows by 2-D nucleation of new graphite layers at the outer surface of the nodules. These layers spread over the surface along the prismatic direction of graphite which is the energetically preferred growth direction of graphite when the apparent growth direction of the nodules is along the basal direction of graphite. 2-D nucleation-growth models first developed for precipitation of pure substances are then adapted to graphite growth from the liquid in spheroidal graphite cast irons. Lateral extension of the new graphite layers is controlled by carbon diffusion in the liquid. This allows describing quantitatively previous experimental results giving strong support to this approach. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：230 / 235

页数：6

共 31 条

[1] GROWTH OF SUCROSE CRYSTALS - DETERMINATION OF EDGE ENERGY FROM EFFECT OF ADDED IMPURITY ON RATE OF STEP ADVANCE [J].

ALBON, N ;

DUNNING, WJ .

ACTA CRYSTALLOGRAPHICA, 1962, 15 (MAY) :474-&

[2] Nucleation and growth kinetics of graphene layers from a molten phase [J].

Amini, Shaahin ;

Abbaschian, Reza .

CARBON, 2013, 51 :110-123

[3] KINETIC EXPRESSION FOR GROWTH OF PRECIPITATE PLATES [J].

BOSZE, WP ;

TRIVEDI, R .

METALLURGICAL TRANSACTIONS, 1974, 5 (02) :511-512

[4]

Cabrera N., 1958, Growth and Perfection of Crystals. Proceedings of an International Conference on Crystal Growth, P393

[5] MOLECULAR MECHANISM OF SOLIDIFICATION [J].

CAHN, JW ;

HILLIG, WB ;

SEARS, GW .

ACTA METALLURGICA, 1964, 12 (12) :1421-+

[6] Chunky graphite formation in ductile cast irons: effect of silicon, carbon and rare earths [J].

de la Torre, Urko ;

Lacaze, Jacques ;

Sertucha, Jon .

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2016, 107 (11) :1041-1050

[7]

Doherty R. D., 1983, Physical metallurgy. Third revised and enlarged edition, P933

[8]

Doherty R D, 1982, SOLID STATE PHASE TR, P547

[9] THE NUCLEATION AND GROWTH OF GRAPHITE - THE MODIFICATION OF CAST-IRON [J].

DOUBLE, DD ;

HELLAWELL, A .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (06) :2435-2442

[10] CONE-HELIX GROWTH FORMS OF GRAPHITE [J].

DOUBLE, DD ;

HELLAWELL, A .

ACTA METALLURGICA, 1974, 22 (04) :481-487

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