卢芳,王维夫,姚建华,戴俊豪

• 1: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
• 2:浙江工业大学激光加工技术工程研究中心

摘要(Abstract)：

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。

关键词(KeyWords)： 激光气体渗氮;TC4;氮氩气比例;裂纹;微观组织

Abstract:

Keywords:

基金项目(Foundation): 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)

作者(Author): 卢芳,王维夫,姚建华,戴俊豪

DOI: 10.13289/j.issn.1009-6264.2011.s1.010

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