5Si3/β-Ti共晶體(室溫下為Ti5Si3/α-Ti)組成；自下而上涂層組織細(xì)化,硬度在HV 660 ~ 730之間,與TC4鈦合金相比,平均摩擦系數(shù)降低(0.39VS0.45),耐磨性提高2.4倍。"/>

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TC4鈦合金表面激光合金化制備Ti-Si涂層
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江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué) 先進(jìn)制造與現(xiàn)代裝備技術(shù)工程研究院

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江蘇大學(xué)拔尖人才基金 (1211110001) 、江蘇省優(yōu)勢(shì)學(xué)科資助


Ti-Si coating by laser alloying on TC4 titanium alloy
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Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University

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    摘要:

    以Ti、Si單質(zhì)元素混合粉末為原料,采用激光合金化技術(shù)在鈦合金表面成功制備出了Ti-Si合金涂層。分析了涂層的組織形貌、成分和物相組成,測(cè)試了涂層的顯微硬度及與YG6在干摩擦磨損條件下的摩擦磨損性能。結(jié)果表明：在合適的激光合金化參數(shù)下制備的Ti-Si涂層整體均勻致密,無(wú)裂紋且與TC4基體呈良好的冶金結(jié)合；涂層組織主要由針狀的α-Ti基體和網(wǎng)狀分布的Ti5Si3/β-Ti共晶體(室溫下為Ti5Si3/α-Ti)組成；自下而上涂層組織細(xì)化,硬度在HV 660 ~ 730之間,與TC4鈦合金相比,平均摩擦系數(shù)降低(0.39VS0.45),耐磨性提高2.4倍。

    Abstract:

    Using Ti and Si elemental elements mixed powder as raw material, Ti-Si alloy coating was successfully fabricated on the surface of titanium alloy by laser alloying. Microstructure morphology, composition and phase of the coating were investigated. Microhardness and tribological properties under dry friction and wear conditions were tested. The results show that: the Ti-Si coating under the appropriate parameters of laser alloying prepared is uniform and dense, crack-free, and combined with a generally good metallurgical TC4 base; coating microstructure is consisted of needle-like α-Ti matrix and network distribution of Ti5Si3/β-Ti eutectic (room temperature is Ti5Si3/α-Ti) composition; the hardness of the coating is between HV 660 ~730;compared with TC4 titanium alloy, the average friction coefficient decreases (0.39VS0.45) and wear resistance increased 2.4 times.

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吳桂蘭,許曉靜,戈曉嵐,陶俊,劉慶輝,仲奕穎,何星華. TC4鈦合金表面激光合金化制備Ti-Si涂層[J].稀有金屬材料與工程,2017,46(7):1949~1953.[Wu Guilan, XU Xiaojing, GE Xiaolan, TAO Jun, Liu Qinhui, Zhong Yiying, HE Xinghua. Ti-Si coating by laser alloying on TC4 titanium alloy[J]. Rare Metal Materials and Engineering,2017,46(7):1949~1953.]
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  • 收稿日期:2015-03-21
  • 最后修改日期:2015-04-10
  • 錄用日期:2015-06-11
  • 在線發(fā)布日期: 2017-11-14
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