吴岸琪,刘其斌,孙桂祥,秦水介

• 1:贵州省光电子技术与应用重点实验室贵州大学
• 2:贵州大学材料学院

摘要(Abstract)：

为了改善金属拉拔卷筒的耐磨性能,采用CO2激光对40Cr钢拉拔卷筒表面进行激光合金化处理,利用OM、XRD、显微硬度计、SEM、磨损试验机研究了Y2O3对合金化层的组织性能的影响。结果表明:Y2O3添加量在0～2.5%变化时,随着Y2O3含量的增加,合金化层组织逐渐变细,Y2O3含量在1.0%时,合金化层组织最细,Y2O3的含量大于1.0%时,合金化层的组织反而变的粗大。未添加Y2O3时,合金化层除了基体相α-Fe外,同时还包括MoC、Cr3Mo、Cr7C3和Fe2MoC等相。添加Y2O3后,还生成了少量的FeCrMo相。Y2O3还可以抑制Mo、Cr等原子由晶内向晶界扩散。Y2O3添加量为1.0%时,合金化层具有最高的硬度和耐磨性,当Y2O3含量大于1.0%时,合金化层的硬度和耐磨性随着Y2O3含量的增加反而降低。

关键词(KeyWords)： Y2O3;拉拔卷筒;激光合金化;组织性能

Abstract:

Keywords:

基金项目(Foundation): 贵州省科技厅工业攻关项目(黔科合GY字[2008]3029)

作者(Author): 吴岸琪,刘其斌,孙桂祥,秦水介

DOI: 10.13289/j.issn.1009-6264.2011.09.021

参考文献(References)：

• [1]刘其斌.激光加工技术及其应用[M].北京:冶金工业出版社,2007.
• [2]Xu Yue,Ji Hong,Wei Yongde.Application of rare earth to laser treatment on metal surface[J].Chinese Rare Earths,2001,22(1):50-54.
• [3]谢学兵,程西云.稀土在金属表面处理中的应用及发展趋势[J].机械研究与应用,2003,16(4):4-5.Xie Xuebin,Chen Xiyun.Using of rare earth element in metallic surface treating and their additives[J].Mechanical Research&Application,2003,16(4):4-5.
• [4]张世宏,李明喜,李辉生,等.纳米Y2O3弥散强化Ni基合金激光熔覆层[J].热加工工艺,2006,35(6):17-19.Zhang Shihong,Li Mingxi,Li Huisheng,et al.Nano-Y2O3 dispersion strengthened Ni-based alloy laser coating[J].Hot Working Technology,2006,35(6):17-19.
• [5]周芳,朱涛,侯清宇.时效对激光熔覆Fe901/3%Cu涂层组织及性能的影响[J],材料热处理学报,2009,30(6):154-157.Zhou Fang,Zhu Tao,Hou Qingyu.Influence of aging treatment on microstructure and properties of Fe901/3%Cu coating by laser cladding[J].Transactions of Materials and Heat Treatment,2009,30(6):154-157.
• [6]刘其斌,龙运.Y2O3对4Cr5W2SiV模具钢表面激光熔覆HT-1合金的组织与性能的影响[J].金属热处理,2009,34(8):62-65.Liu Qibin,Long Yun.Effect of Y2O3 on microstructure and properties of laser clad HT-1 alloy coating on 4Cr5W2SiV mould steel[J].Heat Treatmentof Metals,2009,34(8):62-65.
• [7]赵高敏,王昆林,李传刚.La2O3对激光熔覆Fe基合金熔覆层显微组织的影响[J].金属热处理,2004,29(4):9-13.Zhao Gaomin,Wang Kunlin,Li Chuangang.Effect of La2O3 on microstructure of laser cladding ferrite-based alloy coatings[J].Heat Treatment ofMetals,2004,29(4):9-13.
• [8]沈以赴,佟百运.稀土在激光熔覆涂层中的分布及其对腐蚀性能的影响[J].材料研究学报,1998,12(5):434-436.Shen Yifu,Tong Baiyun.Distribution and behaviour of rare earth in laser coating and effect on surface corrosion resistant[J].Chinese Journal ofMaterial Research,1998,12(5):434-436.
• [9]宣天鹏,霍影,闵丹.稀土金属Y对真空熔结Ni基涂层显微组织和耐磨性的影响[J].摩擦学学报,2005,25(2):102-106.Xuan Tianpeng,Huo Ying,Min Dan.Effect of rare earth metal yttrium on microstructure and wear resistance of vacuum fusion sintered Ni-basedcoating[J].Tribology,2005,25(2):102-106.
• [10]原津萍,张平,梁志杰.Mo,CeO2对镍基合金激光熔覆层组织及性能影响[J].稀有金属材料与工程,2008,37(1):147-151.Yuan Jinping,Zhang Ping,Liang Zhijie.Effect of Mo and CeO2 on microstructure and properties of laser cladding Nickel-base alloy coatings[J].RareMetal Materials and Engineering,2008,37(1):147-151.

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