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首页> 外文会议>2018 IEEE 9th International Conference on Mechanical and Intelligent Manufacturing Technologies >Experimental investigation of laser metal deposited icosahedral Al-Cu-Fe coatings on grade five titanium alloy
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Experimental investigation of laser metal deposited icosahedral Al-Cu-Fe coatings on grade five titanium alloy

机译：五级钛合金激光金属沉积二十面体Al-Cu-Fe涂层的实验研究

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摘要

Laser Additive Manufacturing is relatively new in the manufacturing industry. This paper focuses on the effect of hybrid coatings of Al-Cu-Fe on a grade five titanium alloy (Ti6Al4V) using laser metal deposition (LMD) process at different laser power and scanning speeds. Icosahedral Al-Cu-Fe as quasicrystals are a relatively new class of materials which exhibit unusual atomic structure and useful physical and chemical properties. Ti6Al4V/Al-Cu-Fe composite were analysed using Optical microscopy, Scanning electron microscopy (SEM) with energy dispersive microscopy (EDS), indentation testing, X-Ray Diffraction (XRD), corrosion and wear testing. deposit width and height, heat affected zone (HAZ) height), dilution rate, aspect ratio and powder efficiency of each sample remarkably increased with increasing laser power due to the laser-material interaction. It was observed that there are higher number of aluminium and titanium presented in the formation of the composite. The indentation testing reveals that for both scanning speed of 0.8m/min and 1m/min, the mean hardness value decreases with increasing laser power. It was found that due to dilution effect, a part of Ti entered into molten pool from the substrate. The results indicate that Ti, Al3Ti, Ti3Al, CuTi2 can be produced through the in situ metallurgical reactions during the LMD process.
机译：激光增材制造在制造业中相对较新。本文重点研究了在不同激光功率和扫描速度下采用激光金属沉积（LMD）工艺在5级钛合金（Ti6Al4V）上进行Al-Cu-Fe杂化涂层的效果。二十面体Al-Cu-Fe准晶体是一类相对较新的材料，具有异常的原子结构和有用的物理和化学性质。使用光学显微镜，扫描电子显微镜（SEM）和能量色散显微镜（EDS），压痕测试，X射线衍射（XRD），腐蚀和磨损测试对Ti6Al4V / Al-Cu-Fe复合材料进行了分析。沉积物的宽度和高度，热影响区（HAZ）高度，稀释率，长宽比和粉末效率随着激光与激光材料相互作用的增加而显着增加。观察到在复合材料的形成中存在更多数量的铝和钛。压痕测试表明，对于0.8m / min和1m / min的扫描速度，平均硬度值随激光功率的增加而降低。发现由于稀释作用，一部分Ti从基底进入熔池。结果表明，在LMD工艺过程中可通过原位冶金反应制备Ti，Al 3 Ti，Ti 3 Al，CuTi 2 。

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