钢中原始奥氏体晶界对(225)_γ马氏体形核的影响

金属学报

1985, Vol. 21

Issue (3): 1-6

论文

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钢中原始奥氏体晶界对(225)_γ马氏体形核的影响

张星泉;贺贤铭

上海市第二工业大学;上海市第二工业大学

THE EFFECT OF PRIOR AUSTENITIC GRAIN BOUNDARIES ON NUCLEATION OF(225)_γ MARTENSITE IN STEELS

ZHANG Xingquan;HE Xianming Shanghai Polytechnic University No.2

引用本文:

张星泉;贺贤铭. 钢中原始奥氏体晶界对(225)_γ马氏体形核的影响[J]. 金属学报, 1985, 21(3): 1-6.
, . THE EFFECT OF PRIOR AUSTENITIC GRAIN BOUNDARIES ON NUCLEATION OF(225)_γ MARTENSITE IN STEELS[J]. Acta Metall Sin, 1985, 21(3): 1-6.

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摘要: 本文结果指出,T10A及GCr15两钢的单位体积内(225)_γ马氏体片数N_v与原始奥氏体晶粒平均直径D的关系为N_V=N_0(?)~(-1/2).用相变驱动力作用下的低温多晶范性形变的位错理论可推得此关系.据此认为(225)_γ马氏体形核是在相变驱动力作用下,开动位错源的结果.可见,没有预存的马氏体核胚,而只有预存的位错源.细化原始奥氏体晶粒是细化(225)_γ马氏体片的有效方法.

Abstract：Results are Presented for the relationship between the number of(225)_γ mar-tensite plates per unit volume,N_v,and the mean diameter of prior austenitegrain,D,for steel T10A and GCr15 being N_v=N_0 (?),where N_0 is a con-stant.This relationship may be derived by the theory of dislocation of plastic de-formation in polycrystal at lower temperature under applied driving force of phasetransformation.Accordingly,the nucleation of(225)_γ martensite is the result ofon set of the motion of dislocation source under the applied driving force of phasetransformation.Consequently,these might be no pre-existing martensite nucleus,but are pre-existing dislocation sources.The austenite grain refinement may bean effective method for refining the martensite plates.

收稿日期: 1985-03-18

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1 徐祖耀,马氏体相变与马氏体,科学出版社,1980年p.430-465．
2 Cohen,M.;Waymen,C.M.,Metallurgical Treatieses,Presentations at the USA-China Bilateral Conference,Sponsored by the Metallurgical Society of AIME,ASM and CSM to be Held in Beijing,November 13-22,1981,p.445．
3 Fullman,R.L.,Trans.AIME,197(1953) ,447．
4 Dehoff,R.T.;Rhines,F.W.,Trans Metall.Soc.AIME,22(1961) ,975．
5 洛阳轴承研究所,热处理手册,第二分册,机械工业出版社,1981年,p.278-295．
6 Frank,F.C.,Acta Metall.,1(1953) ,15．
7 Knapp,H.;Dehlinger,U.,Acta Metall.,4(1956) ,289．
8 张星泉;贺贤铭,淬火钢中微裂纹形成,待发表.
9 张星泉;苏宁,奥氏体成分不均匀细化马氏体模型,待发表.H

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