RELATIONSHIP BETWEEN PRIMARY-DENDRITE AND SECONDARY-DENDRITE ARM SPACING OF C-MN STEEL UNI-DIRECTIONALLY SOLIDIFIED IN STEADY-STATE

被引：15
作者：
IMAGUMBAI, M
机构：
[1] Kimitsu R&D Laboratory, Technical Development Bureau, Nippon Steel Corporation, Chiba, 299-11, Kimitsu, Kimitsu
来源：
ISIJ INTERNATIONAL | 1994年 / 34卷 / 12期
关键词：
DENDRITE ARM SPACING; DENDRITE MORPHOLOGY; THERMODYNAMIC PERTURBATION; OSTWALD RIPENING;
D O I：
10.2355/isijinternational.34.986
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The relationship between primary dendrite arm spacing and secondary one was investigated in experiment, and was found that the latter is roughly one half of the former. Theoretically, the primary arm spacing is interpreted by thermodynamic perturbations ahead of the primary tip. On the contrary growth mechanism of secondary arm is ascribed to Ostwald-ripening and/or sintering/coalescence mechanism. The experimental result is analysed by the mechanisms, and is shown the 'one half relationship' is a good approximation.
引用
收藏
页码：986 / 991
页数：6
相关论文
共 22 条
[1]  
DANN PC, 1974, J AUST I MET, V19, P140
[2]  
ELLIOTT JF, 1963, THERMOCHEMISTRY STEE, P702
[3]   A THEORY OF BRANCHING LIMITED GROWTH OF IRREGULAR EUTECTICS [J].
FISHER, DJ ;
KURZ, W .
ACTA METALLURGICA, 1980, 28 (06) :777-794
[4]   OSTWALD RIPENING AND RELAXATION IN DENDRITIC STRUCTURES [J].
GLICKSMAN, ME ;
VOORHEES, PW .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1984, 15 (06) :995-1001
[5]  
HUNT JD, 1972, SOLIDIFICATION CASTI, P3
[6]   BEHAVIORS OF MANGANESE-SULFIDE IN ALUMINUM-KILLED STEEL SOLIDIFIED UNI-DIRECTIONALLY IN STEADY-STATE - DENDRITE STRUCTURE AND INCLUSIONS [J].
IMAGUMBAI, M .
ISIJ INTERNATIONAL, 1994, 34 (11) :896-905
[7]   DENDRITE MORPHOLOGY OF STEADY-STATE UNIDIRECTIONALLY SOLIDIFIED STEEL [J].
JACOBI, H ;
SCHWERDTFEGER, K .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1976, 7 (06) :811-820
[8]  
KATTAMIS TZ, 1967, T METALL SOC AIME, V239, P1504
[9]   PRIMARY DENDRITE SPACING OF LEAD DENDRITES IN PB-SN AND PB-AU ALLOYS [J].
KLAREN, CM ;
VERHOEVEN, JD ;
TRIVEDI, R .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1980, 11 (11) :1853-1861
[10]   DENDRITE GROWTH AT THE LIMIT OF STABILITY - TIP RADIUS AND SPACING [J].
KURZ, W ;
FISHER, DJ .
ACTA METALLURGICA, 1981, 29 (01) :11-20
123