激光气体氮化对工业纯钛TA2表面硬度的影响
Effect of Laser Gas Nitriding on Surface Hardness of Commercially Pure Titanium TA2
摘 要
通过组织观察和硬度测试分析了工业纯钛TA2在激光气体氮化中,带式积分镜的应用和激光气体氮化参数对氮化后TA2表面硬度的影响.结果表明:采用带式积分镜进行激光光束变换可以有效提高工业纯钛TA2的表面硬度和激光氮化处理的效率;氮化区域内生成硬质相TiN是工业纯钛TA2表面硬度得到提高的主要原因,有利于硬质相TiN形成的激光气体氮化参数都会提高其表面的硬度.
工业纯钛TA2
带式积分镜
laser gas nitriding
commercially pure titanium TA2
strip integral mirror
Abstract
The effect of laser gas nitriding parameters and laser beam distributing on the surface hardness of laser nitrided layer was studied through analysing the microstructure and the test data of the hardness.The application of strip integral mirror could change the laser beam,thus the efficiency of laser gas nitriding and the average surface hardness could be enhanced.The main reason of the increased surface hardness can be contributed to the fabricated TiN nitrided layers,and the gas nitriding process that can facilitate the generation of TiN can increase the surface hardness of commercially pure titanium TA2.
中图分类号 TN249
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收稿日期 2007/3/8
修改稿日期 2007/6/1
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备注凌人蛟(1974-),男,山东黄县人,讲师,硕士研究生.
引用该论文: LING Ren-jiao,XING Li-ping,ZHU Hai. Effect of Laser Gas Nitriding on Surface Hardness of Commercially Pure Titanium TA2[J]. Materials for mechancial engineering, 2007, 31(12): 34～36
凌人蛟,邢力平,朱海. 激光气体氮化对工业纯钛TA2表面硬度的影响[J]. 机械工程材料, 2007, 31(12): 34～36
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参考文献
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【2】Jiang P,He X L.Wear resistance of a laser surface alloy Ti-6Al-4V alloy[J].Surface and Coating Technology,2000,130:24-28.
【3】Tian Y S,Chen C Z,Li S T,et al.Research progress on laser surface modification of titanium alloys[J].Applied Surface Science,2005,242(1):177-184.
【4】崔振铎,杨贤金,朱胜利,等.金属钛激光气体氮化层组织及表面特征[J].材料工程,2004(4):3-6.
【5】陈虹,吴世凯,张正伟,等.高功率激光光束特性对激光加工的影响[J].光学技术,2006(11):834-837.
【6】樊丁.工业纯钛TA2的激光气体氮化[J].兰州理工大学学报,2006(3):1-3.
【7】王智勇.一种大功率激光加工用带式积分镜的设计[J].北京工业大学学报,2002(9):334-336.
【8】Wiklund U,Hutchings I M.Investigation of surface treatments for galling protection of titanium alloys[J].Wear,2001,25(10):1034-1041.
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