TA2純鈦表面激光氣體氮化工藝研究
發(fā)布時間:2018-08-18 15:37
【摘要】:采用Nd:YAG激光器在氮氣環(huán)境中對TA2純鈦進(jìn)行激光氣體氮化處理,研究了不同工藝下TA2純鈦表面激光氣體氮化層的宏觀形貌、物相組成、顯微組織、硬度及摩擦磨損性能。結(jié)果表明,經(jīng)過激光表面氮化處理后,氮化層與基體之間為冶金結(jié)合,氮化層的組織主要由細(xì)小的、枝晶狀的Ti N構(gòu)成。激光離散氮化可顯著降低材料表面的摩擦系數(shù),提高材料的耐磨性能,且氮化強化區(qū)域的分布越密集,摩擦系數(shù)值越小,耐磨性越好。激光離散氮化還可以提高加工效率,抑制裂紋的萌生。
[Abstract]:The laser gas nitriding of pure titanium TA2 was carried out by Nd:YAG laser in nitrogen environment. The macro-morphology, phase composition, microstructure, hardness and friction and wear properties of laser gas nitriding layer on the surface of pure titanium TA2 were studied under different processes. The microstructure of the nitrided layer is mainly composed of fine dendritic Ti N. Laser discrete nitriding can significantly reduce the friction coefficient of the material surface and improve the wear resistance of the material.
【作者單位】: 西北有色金屬研究院;
【基金】:國家自然科學(xué)基金青年基金項目(51701165) 中國博士后科學(xué)基金面上項目資助(2017M623334XB)
【分類號】:TG178
[Abstract]:The laser gas nitriding of pure titanium TA2 was carried out by Nd:YAG laser in nitrogen environment. The macro-morphology, phase composition, microstructure, hardness and friction and wear properties of laser gas nitriding layer on the surface of pure titanium TA2 were studied under different processes. The microstructure of the nitrided layer is mainly composed of fine dendritic Ti N. Laser discrete nitriding can significantly reduce the friction coefficient of the material surface and improve the wear resistance of the material.
【作者單位】: 西北有色金屬研究院;
【基金】:國家自然科學(xué)基金青年基金項目(51701165) 中國博士后科學(xué)基金面上項目資助(2017M623334XB)
【分類號】:TG178
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