引用本文:吴春雷， 罗甸， 马廷涛， 马欣新， 孙志国.9310渗碳钢强流脉冲电子束表面钛合金化处理的结构与性能[J].中国表面工程,2014,27(2):88~94
WU Chunlei, LUO Dian, MA Tingtao, MA Xinxin, SUN Zhiguo.Microstructure and Properties of Ti Alloying Surface on 9310 Carburizing Steel by High Current Pulsed Electron Beam[J].China Surface Engineering,2014,27(2):88~94
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9310渗碳钢强流脉冲电子束表面钛合金化处理的结构与性能
吴春雷， 罗甸， 马廷涛， 马欣新， 孙志国1,2,3
1. 牡丹江师范学院 理学院, 黑龙江 牡丹江157012;2. 哈尔滨工业大学 a. 材料科学与工程学院, b.先进焊接与连接国家重点实验室, 哈尔滨150001;3. 沈阳造币厂, 沈阳 110042
摘要:
为进一步提高SAE9310钢表面渗碳层的耐磨性和耐蚀性，采用强流脉冲电子束(HCPEB)技术在不同的能量密度下对SAE9310渗碳钢进行表面钛合金化处理。并通过扫描电子显微镜、X射线衍射仪、显微硬度计、摩擦磨损试验及电化学试验等研究了钛合金化试样的表面及截面形貌、相组成及性能等。结果表明：强流脉冲电子束辐照后钛以合金元素形式固溶于基体中，重熔层奥氏体含量增加。钛合金化层腐蚀电位由未处理时的-0.577 V提高至-0.539 V，自腐蚀电流密度降至2×107 A/cm2，较未处理试样低1个数量级。合金化处理后样品表面显微硬度与原始样品接近，硬度约为780 HV0.25，但干摩擦因数由0.8降至0.15，磨损率降低接近3倍。电子束表面钛合金化处理可以提高9310钢渗碳层的耐磨性和耐蚀性。
关键词:  SAE9310渗碳钢  强流脉冲电子束  辐照  钛合金化
DOI：10.3969/j.issn.1007-9289.2014.02.015
分类号:
基金项目:
Microstructure and Properties of Ti Alloying Surface on 9310 Carburizing Steel by High Current Pulsed Electron Beam
WU Chunlei, LUO Dian, MA Tingtao, MA Xinxin, SUN Zhiguo1,2,3
1. College of Science, Mudanjiang Normal University, Mudanjiang 157012, Heilongjiang;2a. College of Materials Science and Engineering, 2b. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001;3. Shenyang Mint, Shenyang 110042
Abstract:
High current pulsed electron beam (HCPEB) treatment with various energy densities has been used to alloy Ti on the surface of SAE9310 carburizing steel to improve the wear resistance and corrosion resistance. The surface and section morphology, phase composition and performance were studied by scanning electron microscopy, Xray diffraction instruments， microhardness tester, frictional wear test and electrochemical experiments, respectively. After HCPEB alloying treatment, Ti solutionized in the remelting layer, while the austenite increased. Compared with the untreated samples, the corrosion potential rose from -0.577 V to -0.539 V, the corrosion current density dropped to 2×107A/cm2 by one order of magnitude. The hardness of the sample was almost unchanged after alloying, hardness is about 780 HV0.25, however, the friction coefficient was reduced from 0.8 to 0.15 and wear rate was reduced 3 times. All the results above show that Ti alloying by HCPEB on the surface of SAE9310 carburizing steel improved its friction resistance and corrosion resistance.
Key words:  SAE9310 carburizing steel  high current pulsed electron beam (HCPEB)  irradiation treatment  Ti alloying
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