| 不同氮氩比对TC4合金激光气体渗氮的影响 |
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| 引用本文： | 卢芳,王维夫,姚建华,戴俊豪.不同氮氩比对TC4合金激光气体渗氮的影响[J].材料热处理学报,2011,32(Z1). |
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| 作者姓名： | 卢芳 王维夫 姚建华 戴俊豪 |
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| 作者单位： | 浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江杭州310014;浙江工业大学激光加工技术工程研究中心,浙江杭州310014 |
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| 基金项目： | 国家自然科学基金(51105304); 特种装备制造与先进加工技术教育部/浙江省重点实验开放基金(2010EM001); 浙江工业大学博士科启动基金(56710203006) |
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| 摘 要： | 针对TC4激光渗氮时产生裂纹而影响材料使用性能的问题,试验采用氩气和氮气的混合气体,对钛合金板块TC4进行激光气体渗氮,并研究了不同的氮气含量对渗氮层的裂纹、组织特征以及硬度等的影响.结果表明,在氮气含量低于40％的情况下,渗氮表面基本无裂纹产生；渗氮层的表面硬度以及渗氮深度随着氮气含量的降低而有所降低.另外还对渗氮层进行线扫描分析发现,在钛合金TC4激光气体渗氮过程中,渗氮层中的合金元素发生了选择性汽化现象.
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| 关 键 词： | 激光气体渗氮 TC4 氮氩气比例 裂纹 微观组织 |
Influence of different nitrogen argon proportion on laser surface nitriding of TC4 alloy |
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| LU Fang
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WANG Wei-fu
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YAO Jian-hua
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DAI Jun-hao.Influence of different nitrogen argon proportion on laser surface nitriding of TC4 alloy[J].Transactions of Materials and Heat Treatment,2011,32(Z1). |
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| Authors: | LU Fang WANG Wei-fu YAO Jian-hua DAI Jun-hao |
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| Affiliation: | LU Fang1,2,WANG Wei-fu1,YAO Jian-hua1,DAI Jun-hao1,2(1.Key Laboratory of E&M,Ministry of Education & Zhejiang Province,Zhejiang University of Technology,Hangzhou,Zhejiang 310014,China,2.Research Center of Laser Processing Technology and Engineering,China) |
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| Abstract: | In order to solve the cracks during the processing of laser nitriding of TC4 alloy,the affection on the nitriding crack,microstructure and the hardness by used the mixture gas with argon and nitrogen instead of the pure nitriding was studied.The results indicate that the nitrogen content is lower than 40%,nitriding surface no cracks;surface hardness with the reduction of nitrogen content is reduced.Furthermore,the result of EDX analysis show that selective element vaporization happened during the nitriding. |
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| Keywords: | laser gas nitriding TC4 the proportion of nitrogen and argon hardness crack microstructure |
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