激光熔凝处理高碳高铬轧辊钢的组织及硬度
Structure and Hardness of High C-Cr Roller Steel Treated by Laser Melting
摘 要
对高碳高铬钢进行激光熔凝处理,采用XRD、OM、SEM及EPMA等分析手段对激光熔凝处理后的组织、物相组成、硬度等进行了研究.结果表明:激光熔凝处理明显改善了高铬钢中网状碳化物的分布状态,组织明显细化,熔凝层组织形态由表及里为等轴晶、树枝晶、胞状晶,显微组织为奥氏体,枝晶间析出少量碳化物;对流传质作用促使激光熔凝层中各元素宏观分布均匀,枝晶间析出细小的富含铬、钼、钒等元素的碳化物;熔凝层由于生成大量的奥氏体,硬度稍有降低,显微硬度最大值出现在热影响区,可达到759 HV.
高铬钢
显微组织
硬度
laser melting
high Cr steel
microstructure
hardness
Abstract
Laser melting was performed on high-C high-Cr steel.The structure,phase composition and hardness of the high-Cr C steel after laser melting were studied by means of XRD,OM,SEM and EPMA.The results show that the laser melting led to the distribution improvement of net carbides and the refinement of grains.The structure of the melted zone consisted of equiaxed grains,dendrite and cellular grains from the surface to the bottom with austenite microstructure and a few carbides precipitated at grain boundaries.Convention resulted in uniform distribution of the alloying elements in the melted zone,but fine carbides rich in Cr,Mo,V elements precipitated along grain boundaries.Microhardness in melted zone was low due of the presence of a high volume fraction of austenite,but the highest hardness of the HAZ could reach 759 HV.
中图分类号 TG146.1
所属栏目 材料性能及其应用
基金项目 山东省自然科学基金资助项目(Y2006F64)
收稿日期 2008/9/10
修改稿日期 2009/4/3
网络出版日期
作者单位点击查看
备注李美艳(1982-),女,山东龙口人,博士研究生.
引用该论文: LI Mei-yan,WANG Yong,HAN Bin,HAN Tao,CHENG Yi-yuan. Structure and Hardness of High C-Cr Roller Steel Treated by Laser Melting[J]. Materials for mechancial engineering, 2009, 33(9): 76～78
李美艳,王勇,韩彬,韩涛,程义远. 激光熔凝处理高碳高铬轧辊钢的组织及硬度[J]. 机械工程材料, 2009, 33(9): 76～78
被引情况:
【1】史华亮,李继强,贾志欣,刘立君,郑雅宏, "SKD61模具钢激光仿生强化后的组织和性能",机械工程材料 38, 39-43(2014)
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参考文献
【1】COLACO R,VILAR R.On the influence of retained austenite in the abrasive wear behaviour of a laser surface melted tool steel[J].Wear,2005,258:225-231.
【2】KWORK C T,CHENG F T,MAN H C.Microstructure and corrosion behavior of laser surface-melted high-speed steels[J].Surface and Coating Technology,2007,202(2):336-348.
【3】ZHOU Li,SUN Da-le,LIU Chang-sheng,et al.Fatigue behavior of high speed steel roll materials for hot rolling by laser impacting[J].Journal of Iron and Steel Research,International,2006,13(6):49-52.
【4】武晓雷,罗耕莫,沈还,等.合金铸铁热轧辊材料的激光熔凝组织及抗磨损性能[J].金属材料研究,1997,23(2):21-23.
【5】王长贵,李志远,黄安国.75CrMnMo铸钢轧辊激光熔凝强化的组织及性能分析[J].钢铁,2004,39(9):61-64.
【6】佗劲红,陈岁元,周利,等.激光表面改性对轧辊用高速钢组织及硬度的影响[J].金属热处理,2006,31(1):56-59.
【7】李以善,王勇,韩彬,等.激光熔凝对电站锅炉喷嘴用高铬铸钢表面组织和性能的影响[J].机械工程材料,2007,31(12):11-14.
【8】王贵,王建国,周新初,等.轧辊钢激光熔凝处理组织及性能研究[J].金属热处理,2001(3):35-37.
【9】刘江龙,刘朝.激光作用下合金熔池内的熔体流动[J].重庆大学学报,1993,16(5):109-114.
【10】高阳,佟百运,梁勇,等.不锈钢上激光熔覆涂层结构特征与质量研究[J].材料科学与工艺,2003,11(4):347-350.
【2】KWORK C T,CHENG F T,MAN H C.Microstructure and corrosion behavior of laser surface-melted high-speed steels[J].Surface and Coating Technology,2007,202(2):336-348.
【3】ZHOU Li,SUN Da-le,LIU Chang-sheng,et al.Fatigue behavior of high speed steel roll materials for hot rolling by laser impacting[J].Journal of Iron and Steel Research,International,2006,13(6):49-52.
【4】武晓雷,罗耕莫,沈还,等.合金铸铁热轧辊材料的激光熔凝组织及抗磨损性能[J].金属材料研究,1997,23(2):21-23.
【5】王长贵,李志远,黄安国.75CrMnMo铸钢轧辊激光熔凝强化的组织及性能分析[J].钢铁,2004,39(9):61-64.
【6】佗劲红,陈岁元,周利,等.激光表面改性对轧辊用高速钢组织及硬度的影响[J].金属热处理,2006,31(1):56-59.
【7】李以善,王勇,韩彬,等.激光熔凝对电站锅炉喷嘴用高铬铸钢表面组织和性能的影响[J].机械工程材料,2007,31(12):11-14.
【8】王贵,王建国,周新初,等.轧辊钢激光熔凝处理组织及性能研究[J].金属热处理,2001(3):35-37.
【9】刘江龙,刘朝.激光作用下合金熔池内的熔体流动[J].重庆大学学报,1993,16(5):109-114.
【10】高阳,佟百运,梁勇,等.不锈钢上激光熔覆涂层结构特征与质量研究[J].材料科学与工艺,2003,11(4):347-350.
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