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金属学报  2009, Vol. 45 Issue (1): 32-36    
  论文 本期目录 | 过刊浏览 |
金属合金等温相变的体激活能及相变机制 II. β黄铜等温相变
康沫狂1; 张明星2; 刘 峰1; 朱明1
1 西北工业大学材料学院; 西安 710072
2 Division of Materials; School of Engineering; University of Queensland; Brisbane; QLD 4072; Australia
OVERALL ACTIVATION ENERGY OF ISOTHERMAL TRANSFORMATION IN METAL ALLOY AND ITS MECHANISM II. Isothermal Transformation in β Brasses
KANG Mokuang1; ZHANG Mingxing2; LIU Feng1; ZHU Ming1
1 School of Materials; Northwestern Polytechnical University; Xi'an 710072
2 Division of Materials; School of Engineering; University of Queensland; Brisbane; QLD 4072; Australia
引用本文:

康沫狂 张明星 刘 峰 朱明. 金属合金等温相变的体激活能及相变机制 II. β黄铜等温相变[J]. 金属学报, 2009, 45(1): 32-36.
. OVERALL ACTIVATION ENERGY OF ISOTHERMAL TRANSFORMATION IN METAL ALLOY AND ITS MECHANISM II. Isothermal Transformation in β Brasses[J]. Acta Metall Sin, 2009, 45(1): 32-36.

全文: PDF(914 KB)  
摘要: 

与钢相似, β黄铜等温处理获得的片状α1(贝氏体)和棒状α都具有自己的C曲线; 各转变初期均能获单一相, 而转变中、后期通常可获相邻两相的复合体. 必须用单一相和Arrhenius关系求相变产物的体激活能. 用体激活能、相的形貌和体自由能变化相结合能可诠释下述论点: 片状α1(贝氏体) 是溶质原子扩散控制下母相β' 中的贫溶质区, 进行“军队型”原子无扩散马氏体样切变相变; 棒状α是溶质原子扩散控制下母相β' 中的最贫溶质区, 发生“平民型”原子无扩散界面控制相变.

关键词 片状α1(贝氏体)棒状α体激活能马氏体样切变界面控制相变β黄铜    
Abstract

Similarly to steels, in the isothermally treated $\beta$ brasses, the plate-like α1 (bainite) and rod-like α have all themselves C curves. A single phase is always produced in the primary stage, whereas the nearby two-phase complex is usually produced in the medium or final stage of the transformation. Only a single phase and Arrhenius equation must be used to deduce the overall activation energy for the transformation product. By a combination of overall activation energy, morphology and change of free energy, it can be explained that the plate-like α1 (bainite) transformation mechanism follows military atom diffusionless martensite-like shear, occurring in solute-depleted region controlled by solute atom diffusion in parent phase β', and the rod-like α phase results from civilian atom diffusionless interphase control transformation, occurring in the most solute-depleted region controlled by solute atom diffusion in parent phase β'.

Key wordsplate-like α1 (bainite), rod-like α, overall activation energy    martensite-like shear    interphase control transformation    β  brass
收稿日期: 2008-04-10     
ZTFLH: 

TG111.5

 
作者简介: 康沫狂, 男, 1920年生, 资深教授

[1] Kang M K, Zhang M X, Liu F, Zhu M. Acta Metall Sin,2009; 45: 25
(康沫狂, 张明星, 刘峰, 朱明. 金属学报, 2009; 45: 25)
[2] Kennon N E, Dunne D P, Middleton L. Metall Trans, 1982; 12A: 551
[3] Takezawa K, Sato S. Trans JIM, 1988; 29 : 894
[4] Han Y S, Kim Y G. J Mater Sci, 1986; 21: 2711
[5] Lee E S, Kim Y G. Scr Metall Mater, 1990; 24: 745
[6] Lee E S, Kim Y G. Acta Metall Mater, 1990; 38: 1669
[7] Lee E S, Kim Y G. Metall Trans, 1990; 21A: 1681
[8] Tabuchi M, Marukawa K, Sato H. J Jpn Inst Met, 1997; 61: 1
(田渊正幸, 丸川 建三郎, 左藤博保. 日本金属学会志, 1997; 61: 1)
[9] Jiang L X, L¨u W, Jiang B H, Hsu T Y (Xu Z Y). Trans Nonferrous Met Soc China, 1991; 1: 57
[10] Meng X K, Chen D M, Yang Y Q, Kang M K. Met Sci Technol, 1992; 11(3, 4): 7
(孟祥康, 陈大明, 杨延清, 康沫狂. 金属科学与工艺, 1992; 11(3, 4): 7)
[11] Meng X K, Wu X L, Liu X, Yang Y Q, Kang M K. Mater Sci Technol, 1993;1(4): 1
(孟祥康, 武小雷, 刘晓, 杨延清, 康沫狂. 材料科学与工艺, 1993; 1(4): 1)
[12] Flewitt P E J, Tower J M. J Inst Met, 1957; 35: 273
[13] Cornelis I, Wayman M. Acta Metall, 1974; 22: 301
[14] Chattopadhyay K, Aaronson H I. Acta Metall, 1986; 34: 695
[15] Wu M H, Wayman M. Metall Mater Trans, 1994; 25: 2581
[16] Meng X K, Kang M K, Yang Y Q, Liu D H. Metall Mater Trans, 1994; 25: 2601
[17] Kang M K, Zhou M, Zhang M X. J Mater Sci Technol, 2005; 21: 437
[18] Zhang L P, Li F Q, Zhang E T, Deng Z H. Mater Mech Eng, 1990; 14(2): 7
(张丽萍, 李福全, 张恩涛, 邓肇豪. 机械工程材料, 1990; 14(2): 7)
[19] Wmanski R S, Fikelxichian B N, Blanger M E, Kixiskin S T, Fastov N S, Golerik S S. Physical Metallography. Moscow: Metallurgist, 1955: 376
(Уманский Я С, Финкельштейн Б Н, Блантер М Е, Кишкин  С Т, Фастов Н С, Горелик С С. Физическое Металловедение Москва: Металлургиздата, 1955: 376)
[20] Porter D A, Easterling K E. Phase Transformation in Metals and Alloy. New York: Van Nostrand Reinhold Company, 1981: 172
[21] Massaski T B. Phase Transformation. Metals Park, OH: ASM, 1970: 433
[22] Kang M K, Zhu M. Trans Mater Heat Treat, 2007; 28(1): 42
(康沫狂, 朱明. 材料热处理学报, 2007; 28(1): 42)
[23] Yang Y Q, Zhang Z F, Shen H M, Wang Y N, Zhao X N, Hong J M, Liu D H, Kang M K. Mater Lett, 1993; 17: 369

[1] 康沫狂 张明星 刘峰 朱明. 金属合金等温相变的体激活能及相变机制 I. 钢的中温(贝氏体)等温相变[J]. 金属学报, 2009, 45(1): 25-31.