邵肖静,王新华,王万军,杨成威,黄福祥,姜敏,邓小旋

• 1:北京科技大学冶金与生态工程学院

摘要(Abstract)：

汽车车轴用YF45MnV钢要求极低的总氧含量和适宜的硫含量,使得对其中硫化物尺寸和形态的控制,用传统的方法均无法有效的实现。本文提出对YF45MnV钢连铸坯等温热处理从而控制钢中硫化物的概念,并在实验室进行了详细研究。首先用thermo-calc热力学软件计算出理想条件下,YF45MnV钢中硫化锰大量析出温度为1416℃;在此基础上,进一步研究了不同热制度对钢中硫化物尺寸的影响;最后,为解决长时间保温处理造成的奥氏体的粗化问题,实验采用gleeble-1500热模拟实验机对等温处理后试样进行压缩实验。研究表明,合适的热处理参数能够将YF45MnV钢连铸坯中硫化物控制为较小尺寸和理想形态(纺锤状和近球形);等温处理后粗大的奥氏体,通过后续变形过程可以实现晶粒细化。

关键词(KeyWords)： YF45MnV钢;硫化物;热处理;晶粒尺寸

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 邵肖静,王新华,王万军,杨成威,黄福祥,姜敏,邓小旋

DOI: 10.13289/j.issn.1009-6264.2010.10.021

参考文献(References)：

• [1]Oikawa K,Ohtani H,Ishida K,et al.The control of the morphology of MnS inclusions in steel during solidification[J].ISIJ,1995,35(4):402-408.
• [2]Fredriksson H,Hillert M.On the formation of manganese sulphide inclusions in steel[J].Scandinavian Journal of Metallurgy,1973,2(3):125-145.
• [3]刘永铨.易切削钢[M].沈阳:东北工学院出版社,1990:55-244.
• [4]Kim H S,Lee H G,OH K S.Evolution of size,composition,and morphology of primary and secondary inclusions in Si/Mn and Si/Mn/Tideoxidized steels[J].ISIJ,2002,42(12):1404-1411.
• [5]Oikawa K,Ishida K,Nishizawa T.Effect of Titanium addition on the formation and distribution of MnS Inclusions in steel during solidification[J].ISIJ,1997,37(4):332-338.
• [6]严国安,秦哲,田志红,等.中碳钙硫易切削钢夹杂物形态控制[J].北京科技大学学报,2007,29(7):685-688.
• [7]Segal A,Charles J A.Influence of particle size on deformation characteristics of manganese sulphide inclusions in steel[J].Metals Technology,1977,4(4):177-182.
• [8]Baker T J,Gove K B,Charles J A.Inclusion deformation and toughness anisotropy in hot-rolled steels[J].Metals Technology,1976,3(4):183-193.
• [9]李代锺.钢中的非金属夹杂物[M].北京:科学出版社,1983:91-93.
• [10]Kuniya J,Anzai H,Masaoka I.Effect of MnS inclusions on stress corrosion cracking in low-alloy steels[J].Corrosion,1992,48(5):419-425.
• [11]Domizzi G,Anteri G,Ovejero-Garcia J.Influence of sulphur content and inclusion distribution on the hydrogen induced blister cracking in pressurevessel and pipeline steels[J].Corrosion Science,2001,43(2):325-339.

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