新型铸态高强度珠光体球墨铸铁的研究

材料热处理学报, 2007, 28(2): 85-88. doi: 10.3969/j.issn.1009-6264.2007.02.019

新型铸态高强度珠光体球墨铸铁的研究

朱先勇 ^1, , 刘耀辉 ^2, , 张英波 ^3, , 宋雨来 ^4, , 于思荣 ^5,

1.吉林大学材料科学与工程学院,长春,130025

2.吉林大学教育部汽车材料重点实验室,长春,130025

3.吉林大学材料科学与工程学院,长春,130025

4.吉林大学材料科学与工程学院,长春,130025

5.吉林大学教育部汽车材料重点实验室,长春,130025

基金项目: 吉林省长春市科技局科研项目(2004176)

关键词：铸态球墨铸铁 , 珠光体形态 , 铜锑合金化

Study on as-cast high strength pearlite ductile iron

采用Cu、Sb合金化元素和余温正火工艺获得铸态高强度和具有良好韧性的珠光体球墨铸铁.该铸铁的珠光体含量≥94%,渗碳体≤6%,抗拉强度可达800MPa,硬度为280～350HBW,伸长率为3%～5%.利用扫描电镜及透射电镜对珠光体组织形态进行分析,结果表明,铸态珠光体中渗碳体的层片间距大小、宽窄、厚薄有很大的差别.当加入0.5%Cu、0.02%Sb时,由于合金元素在相界面上富集,阻止了牛眼状铁素体的出现.

参考文献

[1]	Yoshitaka Misaka;Kazuhiro Kawasaki;Jun Komotori;Masao Shimizu .Fatigue Strength of Ferritic Ductile Cast Iron Hardened by Super Rapid Induction Heating and Quenching[J].Materials transactions,2004(9):2930-2935.
[2]	Hisakichi SUNADA,;Kenzo FUKAURA .Relationship between Microstructure and Impact Strength of Ferritic Ductile Cast Iron for Cask Use[J].材料,1996(3):316-320.
[3]	B. Bosnjak;B. Radulovic;K. Pop-Tonev .Influence of Microalloying and Heat Treatment on the Kinetics of Bainitic Reaction in Austempered Ductile Iron[J].Journal of Materials Engineering and Performance,2001(2):203-211.
[4]	Refaey A.;Fatahalla N. .Effect of microstructure on properties of ADI and low alloyed ductile iron[J].Journal of Materials Science,2003(2):351-362.
[5]	Hayrynen Kathy L .ADI:another avenue for ductile iron foundries[J].Modern Casting,1995,85:35-37.
[6]	Salzbrenner Richard;Crenshaw Thomas B .Effects of sample size and loading rate on the transition behavior of a ductile iron (DI) alloy[J].ASTM Special Technical Publication,1993,1189:840-857.
[7]	M. Caldera;G. L. Rivera;R. E. Boeri .Precipitation and dissolution of carbides in low alloy ductile iron plates of varied thickness[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2005(10):1187-1191.
[8]	El-Din H;Nofal A;Ismail A .Hot working of ductile iron alloyed with molybdenum[J].Canadian Metallurgical Quarterly,2000,39:345-360.
[9]	Labrecque C;Gagné M .Review ductile iron:fifty years of continuous development[J].Canadian Metallurgical Quarterly,1998,37:343-378.
[10]	LI Zhen-hua;LI Yan-xiang .Effect of Sb on the graphite morphology and mechanical properties in heavy section ductile iron[J].Materials Science Forum,2005,5:2769-2772.

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新型铸态高强度珠光体球墨铸铁的研究

Study on as-cast high strength pearlite ductile iron

参考文献