热轧超高碳钢的显微组织与力学性能
Microstructure and Mechanical Properties of Hot-rolled Ultra-high Carbon Steel
摘 要
对超高碳钢进行热轧预处理,得到组织细小、弥散分布的球化碳化物和部分片状珠光体,有效地增强了其后续球化效果;基于离异共析原理,采用不同的工艺球化处理热轧超高碳钢,并对其进行了扫描电镜分析和拉伸试验.结果表明：随奥氏体化温度升高碳化物大小和间距逐渐增大,保温时间延长也将增大碳化物颗粒的间距;球化超高碳钢显示出优异的室温拉伸性能,具有明显的屈服现象,强度和塑性均很好,850 ℃奥氏体化的超高碳钢屈服强度和抗拉强度分别为688 MPa和1 005 MPa,伸长率为16.7%.
碳化物
球化
力学性能
hot-rolled ultra-high carbon steel
carbide
spheroidization
mechanical property
Abstract
Hot-rolling was applied to pretreated ultra-high carbon steel (UHCS).The obtained microstructure consisted of fine,spherical and dispersion-distributing carbides and partial lamellar pearlite,which effectively improved spheroidization of carbides.Different heat treatment technologies based on DET(divorced eutectoid transformation) were taken to spheroidize the hot-rolled UHCS.SEM observation shows that austenitizing state affected the spheroidization of carbides.Higher austenizating temperature or longer holding time of the ultra-high carbon steel increas particle spacing and size of carbides.Ambient tensile test indicat that the spheroidized steel reveal excellent mechanical properties,including obvious yielding phenomena with good strength and plasticity.The UHCS austenized at 850 ℃ show that σ0.2 and σb are 688 MPa and 1 005 MPa,respectively,together with extension rate of 16.7%.
中图分类号 TG142.1
所属栏目
基金项目 国家自然科学基金资助项目(50571077);陕西省科技攻关资助项目(2004KD7-G18)
收稿日期 2007/3/20
修改稿日期 2007/5/29
网络出版日期
作者单位点击查看
备注曹海玲(1982-),女,黑龙江富锦人,硕士研究生.
引用该论文: CAO Hai-ling,FAN Ya-jun,ZHANG Zhan-ling,ZHU Jie-wu,LIU Yong-ning,XU Yan. Microstructure and Mechanical Properties of Hot-rolled Ultra-high Carbon Steel[J]. Materials for mechancial engineering, 2008, 32(1): 13～16
曹海玲,樊亚军,张占领,朱杰武,柳永宁,许雁. 热轧超高碳钢的显微组织与力学性能[J]. 机械工程材料, 2008, 32(1): 13～16
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参考文献
【1】Oyama T,Sherby O D,Wadsworth J,et al.Application of the divorced eutectoid transformation to the development of fined-grained,spheroidized structures in ultrahigh carbon steels[J].Scripta Metallurgica,1984,18:799-804.
【2】Sherby O D,Oyama T,Wadsworth J.Divorced eutectoid transformation process and product of ultrahigh carbon steels.United States:4 448 613[P].1984-05-15.
【3】Sherby O D,Oyama T,Wadsworth J.Ultrahigh carbon steel alloy and processing thereof.United States:4 533 390[P].1985-08-06.
【4】Sherby O D,Kum D W,Oyama T,et al.Ultrahigh carbon steels containing aluminum.United States:4 769 214[P].1988-09-06.
【5】Strum M J,Goldberg A,Sherby O D,et al.Transformation process for production of ultrahigh carbon steels and new alloys.United States:5 445 685[P].1995-08-29.
【6】Sherby O D,Walser B,Young C M,et al.Superplastic ultrahigh carbon steels[J].Scripta Metallurgic,1975(9):569-574.
【7】王宝奇,宋晓艳,李红娟,等.含铝超高碳钢等温球化工艺的研究[J].材料科学与工艺,2004,12(4):337-341.
【8】王宝奇,彭会芬,宋晓艳,等.锻造超高碳钢的球化工艺与力学性能[J].材料热处理学报,2004,25(1):27-31.
【9】Taleff E M,Syn C K,Lesuer D R,et al.Pearlite in ultrahigh carbon steels:Heat treatments and mechanical properties[J].Metallurgical and Materials Transactions,1996,27A(1):111-118.
【10】Peng Huifen,Song Xiaoyan,Gao Aiguo,et al.Microstructure and mechanical properties of the Al-added ultrahigh carbon steel[J].Materials Letters,2005,59:3330-3332.
【11】林一坚,罗光敏,史海生,等.一种具有优化组织和优异性能的超高碳钢[J].钢铁,2005,40(11):57-61.
【2】Sherby O D,Oyama T,Wadsworth J.Divorced eutectoid transformation process and product of ultrahigh carbon steels.United States:4 448 613[P].1984-05-15.
【3】Sherby O D,Oyama T,Wadsworth J.Ultrahigh carbon steel alloy and processing thereof.United States:4 533 390[P].1985-08-06.
【4】Sherby O D,Kum D W,Oyama T,et al.Ultrahigh carbon steels containing aluminum.United States:4 769 214[P].1988-09-06.
【5】Strum M J,Goldberg A,Sherby O D,et al.Transformation process for production of ultrahigh carbon steels and new alloys.United States:5 445 685[P].1995-08-29.
【6】Sherby O D,Walser B,Young C M,et al.Superplastic ultrahigh carbon steels[J].Scripta Metallurgic,1975(9):569-574.
【7】王宝奇,宋晓艳,李红娟,等.含铝超高碳钢等温球化工艺的研究[J].材料科学与工艺,2004,12(4):337-341.
【8】王宝奇,彭会芬,宋晓艳,等.锻造超高碳钢的球化工艺与力学性能[J].材料热处理学报,2004,25(1):27-31.
【9】Taleff E M,Syn C K,Lesuer D R,et al.Pearlite in ultrahigh carbon steels:Heat treatments and mechanical properties[J].Metallurgical and Materials Transactions,1996,27A(1):111-118.
【10】Peng Huifen,Song Xiaoyan,Gao Aiguo,et al.Microstructure and mechanical properties of the Al-added ultrahigh carbon steel[J].Materials Letters,2005,59:3330-3332.
【11】林一坚,罗光敏,史海生,等.一种具有优化组织和优异性能的超高碳钢[J].钢铁,2005,40(11):57-61.
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