Development of coatings for ultrasonic additive manufacturing sonotrode using laser direct metal deposition process
Development of coatings for ultrasonic additive manufacturing sonotrode using laser direct metal deposition process
复制标题
使用激光直接金属沉积工艺开发用于超声波增材制造超声焊极的涂层
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Babu
中科院分区：
文献类型：
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作者：
N. Sridharan;R. Dehoff;B. Jordan;S. Babu
ORNL与Fabrisonic，LLC合作开发用于使用超声波增材制造制造3D打印材料的超声波焊极上的抗磨损硬面涂层。涂层超声焊极的开发和部署有望推动现有技术的发展，以促进硬钢和钛合金的固态增材制造。为此，在超声波发生器材料上沉积结构上无定形的不锈钢材料和钴Chrome材料。两种沉积物均显示出对基材的良好粘附性。使用结构上无定形的钢材料制成的涂层在初始试验期间显示出开裂，并且通过在预热的基底上沉积消除了开裂。两种涂层都显示出超过600HVN的硬度。因此，该项目的第1阶段已用于确定用于涂覆超声波发生器的合适材料。尽管获得了成功的沉积物，但需要通过在各种温度下进行详细的磨损测试来评估涂层。此外，现场试验也是必要的，以测试这些涂层在高周期超声振动模式下的稳定性。如果中标，该项目的第二阶段将用于优化存款材料的成分，以最大限度地提高抗磨损性。然后，工业合作伙伴将使用涂层超声波发生器制造由奥氏体不锈钢制成的结构，以测试使用涂层超声波发生器的可行性。«少
ORNL partnered with Fabrisonic, LLC to develop galling resistant hard facing coatings on sonotrodes used to fabricate 3D printed materials using ultrasonic additive manufacturing. The development and deployment of a coated sonotrode is expected to push the existing state of the art to facilitate the solidstate additive manufacturing of hard steels and titanium alloys. To this effect a structurally amorphous stainless steel material and cobalt chrome material were deposited on the sonotrode material. Both the deposits showed good adhesion to the substrate. The coatings made using the structurally amorphous steel materials showed cracking during the initial trials and cracking was eliminated by deposition on a preheated substrate. Both the coatings show hardness in excess of 600 HVN. Thus the phase 1 of this project has been used to identify suitable materials to use to coat the sonotrode. Despite the fact that successful deposits were obtained, the coatings need to be evaluated by performing detailed galling tests at various temperatures. In addition field tests are also necessary to test the stability of these coatings in a high cycle ultrasonic vibration mode. If awarded, phase 2 of the project would be used to optimize the composition of the deposit material to maximizemore » galling resistance. The industrial partner would then use the coated sonotrode to fabricate builds made of austenitic stainless steel to test the viability of using a coated sonotrode.« less