In this study we demonstrate a new method for depositing thick reactive multilayer films (RMFs) (thickness > 14 μm) by using Ti interlayer integration and substrate preheating during fabrication. These two adjustments are designed to alleviate internal planar stresses that cause delamination between deposited layers and peeling off the substrate. Decreasing the distance between Ti interlayers helps to eliminate delamination between deposited layers. Through high speed camera measurements, the reaction propagation speed of an RMF sample with preheating is 42% slower than the same RMF that was not preheated, indicating a slower heat release rate. The preliminary experiments on brazing Ti-6Al-4V coated with BAlSi-4 brazing material revealed dendritic structure branching out from the RMF surface into the brazing material. The dendrite structures most likely form because of rapid melting and solidification of the brazing material. However, this rapid melting and solidification cycle does not appear to occur uniformly across the BAlSi-4RMF interface which is linked to its low bonding strength. When the Ti-6Al-4V substrate is heated to 150 °C prior to ignition, the strength increases to 0.47 MPa when the total RMF thickness is 84 μm and 15 MPa of pressure is applied.
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ASME 2018 13th International Manufacturing Science and Engineering Conference
June 18–22, 2018
College Station, Texas, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5136-4
PROCEEDINGS PAPER
Preparation of Thick Ni/Al Reactive Multilayer Films and Prospective Use for Self-Powered Brazing of Ti-6Al-4V Available to Purchase
Denzel Bridges,
Denzel Bridges
University of Tennessee, Knoxville, Knoxville, TN
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Ying Ma,
Ying Ma
University of Tennessee, Knoxville, Knoxville, TN
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Cary Smith,
Cary Smith
University of Tennessee, Knoxville, Knoxville, TN
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Zhili Zhang,
Zhili Zhang
University of Tennessee, Knoxville, Knoxville, TN
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Anming Hu,
Anming Hu
University of Tennessee, Knoxville, Knoxville, TN
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Christopher Rouleau,
Christopher Rouleau
Oak Ridge National Laboratory, Oak Ridge, TN
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Zachary Gosser,
Zachary Gosser
Oak Ridge National Laboratory, Oak Ridge, TN
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Kunlun Hong,
Kunlun Hong
Oak Ridge National Laboratory, Oak Ridge, TN
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Jinquan Cheng,
Jinquan Cheng
Composite Solutions and Digital Manufacturing, LLC, Chandler, AZ
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Yoseph Bar-Cohen
Yoseph Bar-Cohen
Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA
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Denzel Bridges
University of Tennessee, Knoxville, Knoxville, TN
Ying Ma
University of Tennessee, Knoxville, Knoxville, TN
Cary Smith
University of Tennessee, Knoxville, Knoxville, TN
Zhili Zhang
University of Tennessee, Knoxville, Knoxville, TN
Anming Hu
University of Tennessee, Knoxville, Knoxville, TN
Christopher Rouleau
Oak Ridge National Laboratory, Oak Ridge, TN
Zachary Gosser
Oak Ridge National Laboratory, Oak Ridge, TN
Kunlun Hong
Oak Ridge National Laboratory, Oak Ridge, TN
Jinquan Cheng
Composite Solutions and Digital Manufacturing, LLC, Chandler, AZ
Yoseph Bar-Cohen
Jet Propulsion Laboratory/California Institute of Technology, Pasadena, CA
Paper No:
MSEC2018-6627, V002T04A042; 5 pages
Published Online:
September 24, 2018
Citation
Bridges, D, Ma, Y, Smith, C, Zhang, Z, Hu, A, Rouleau, C, Gosser, Z, Hong, K, Cheng, J, & Bar-Cohen, Y. "Preparation of Thick Ni/Al Reactive Multilayer Films and Prospective Use for Self-Powered Brazing of Ti-6Al-4V." Proceedings of the ASME 2018 13th International Manufacturing Science and Engineering Conference. Volume 2: Materials; Joint MSEC-NAMRC-Manufacturing USA. College Station, Texas, USA. June 18–22, 2018. V002T04A042. ASME. https://doi.org/10.1115/MSEC2018-6627
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