金属学报  1956, Vol. 1 Issue (4): 383-393

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高强度钢中残留奥氏体在回火过程中的分解

师昌绪

中国科学院金属研究所

KINETICS OF DECOMPOSITION OF RETAINED AUSTENITE DURING TEMPERING IN SOME HIGH STRENGTH STEELS

SHIH CHANG-HSU Institute of Metal Research;Academia Sinica

师昌绪. 高强度钢中残留奥氏体在回火过程中的分解[J]. 金属学报, 1956, 1(4): 383-393.
. KINETICS OF DECOMPOSITION OF RETAINED AUSTENITE DURING TEMPERING IN SOME HIGH STRENGTH STEELS[J]. Acta Metall Sin, 1956, 1(4): 383-393.

摘要 参考文献 相关文章 Metrics 全文: PDF(715 KB)   摘要: 用测量长度的变化,得出残留奥氏体在含硅量不同的Ni(2%)Cr(0.8%)Mo(0.25%)高强度低合金钢中在回火过程的分解曲线,在这些合金钢中,硅的含量为1.5%时,残留奥氏体的分解较慢。由其分解激活能的推论得到:在这个类型的合金钢中,含硅量较低时(0.2—0.3%),残留奥氏体的分解是由于碳在奥氏体中的扩散,而含硅量较高时(1.5%),硅的扩散可能成为残留奥氏体分解的控制因素。 Abstract：The kinetics of decomposition of retained austenite in AISI 4325,AISI 4340and their silicon modified steels has been studied by precision length measurement.It is found that the internal stresses play a very important role in the first instantof transformation.In steels with normal silicon content(0.2—0.3%),the activation energy of thedecomposition of retained austenite is about 35,000 cal/mole,comparable to thatrequired for the diffusion of carbon in γ-Fe.In general,high silicon content(1.5% Si)retards the transformation of retain-ed austenite in these steels.Based upon the isothermal transformation curvesand rate equation the activation energy for this transformation has been deter-mined to be about 44,000 cal/mole,and it is therefore suggested that the diffusionof silicon in γ-Fe surrounding the growing carbide particles is possibly the ratecontrolling factor. 收稿日期: 1956-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 师昌绪 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1956/V1/I4/383 [1] Sands,J.W.,Symposium,Ultra High Strength Steels in Aircraft Applications,Soc.of Automotive Engineers(1953) ,p.35． [2] Shih,C.H.(师昌绪),Averbach,B.L.and Cohen,M.,Trans.ASM,48(1956) ,86． [3] 师昌绪,未出版的报告. [4] Moeller,C.E.,见文献[1] ,p.47． [5] 张沛霖、徐萃章,金属学报,第1卷第4期(1956) ,347． [6] Averbach,B.L.,Lorris,S.and Cohen,M.,Trans.ASM,44(1952) ,746． [7] Averbach,B.L.and Cohen,M.,Trans.ASM,41(1949) ,1024． [8] Bhattacharyya,S.and Kehl,G.L.,Trans.ASM,47(1955) ,351． [9] Wells,C.,Batz,W.and Mehl,R.F.,Trans.AIME,188(1950) ,553． [10] Batz,W.,Mead,H.W.and Birchenall,C.E.,Trans.AIME,194(1952) ,1070． [11] Owen,W.,Trans.ASM,46(1954) ,812． [12] Zener,C.,J.Appl.Phys.,20(1949) ,950． [13] Hollomon.J.H.,Gordon Research Conference,New Hampton,New Hamshire,USA,1952． [14] Hultgren,A.,Trans.ASM,39(1947) ,915． [15] Modin,H.and Modin,S.,Jernkontorets Annaler,139(1955) ,481． [16] Kuo,K.(郭可信)and Hultgren,A.,Rev.Mét.,50(1953) ,847． [17] Roberts,G.S.,Averbach,B.L.and Cohen,M.,Trans.ASM,45(1953) ,576． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed